1**+1 **最严谨的计算方法 *

1+1** ** ** ** ** ​1​+**1

=(sin⁡�2−sin⁡0)+(cos⁡0−cos⁡�2)​**=​(sin2π​​**−sin0**)​​+​(cos0**−cos2π**​**)

=sin⁡�∣0�2+cos⁡�∣�20**=sinx**∣02π​​​​+cosx**∣2π​0**​

=∫0�2cos⁡�d�+∫�20(−sin⁡�)d�​**=​∫02π​​cosxd​x​​+​∫2π​0​​**(​​−sinx**​)dx**

=∫0�2(cos⁡�+sin⁡�)d�​**=​∫02π​​​**​(cosx**+sinx**)dx

=∫0�22sin⁡(�+�4)d�​**=​∫02π​​2​sin**(​x​+4π​​**​)dx**

=−2cos⁡(�+�4)∣0�2**=−2​cos**(​x​+4π​​​)∣02π​​

=−2[cos⁡(�2+�4)−cos⁡�4]​**=​−2​** [​cos​(2π​**+4π​​​​)​−cos4π​​**​]

=−2(−sin⁡�4−cos⁡�4)​**=​​−2​**(​−sin4π​​​−cos4π**​**)

=2(sin⁡�4+cos⁡�4)=2​ (sin4π​​​+cos4π​**)**

=2×2sin⁡(�4+�4)​**=2​​×2​​sin​(4π​​​+4π​​**​)

=2sin⁡[�4(1+1)]​**=2sin​[4π​​​(​1​+​1​**​)**​]**

小结：1+1=2sin⁡[�4(1+1)]​1​+​1​=2sin**[4π​​​(​1​+​1​)**]

令 �=1+1​x​=​1​+​1​：

则 �=2sin⁡(�4�)​x​=2sin**(4π​x**)

使用图像法：

�=�​y​=x

�=2sin⁡(�4�)​y​=2sin**(4π​x**)

�=−2,0,2​x​=**−​2​,​0​,**2

所以 1+1=−2,0,2​1​+​1​=**−​2​,​0​,**2

而 1+1≥21×1​1​+​1​≥21**×1​**

也就是 1+1≥2​1​+​1​≥2

所以 1+1=2。 恭喜你看到了最后，这些大美味送给你！！！

//题目:《歹徒逃亡(简易版)》 
#include <bits/stdc++.h>
#include<windows.h> 
using namespace std;
long long m,sh=20,fy=10,d,xxl=100,yxl=100,o=1000,xh,sum,xz,sb,dj,zl,wyxz;
long long f[9]={0,4000,2000,100,6000,15000,150000,1000000,100000000};
long long f1[9]={0,100,150,50,1000,3000,88888,666666,1000000};
long long wysr[6]={0,536,36236,13733,7426,38313};
long long wyzc[6]={0,63,7345,5135,9999,10086}; 
char x='Y'; 
bool flag=true,ff=true,fl=true;
string k; 
int main()
{
 	cout<<"歹徒逃亡简易版震撼来袭！！\n";
 	Sleep(1000);
 	while (x=='Y')
 	{
 		cout<<"你要去哪？\n";
 		cout<<"1.商店 2.银行 3.医院 4.赌场 5.整容店 6.工地 7.军事基地 8.市政府 9.城市核心区域 10.当前状态 11.退出\n";
 		cin>>k;
 		if (k=="114514"&&flag==true) 
 		{
 			Sleep(1000);
			cout<<"恭喜发现彩蛋！奖励1000万，记得3连一下作者，过年会有好运！\n";
			flag=false;
			o+=10000000; 
			Sleep(1000);
		}
		if(k=="hxzssb"&&ff==true)
		{
			Sleep(1000);
			cout<<"这也是我的想法！奖励1000万，记得3连一下作者，过年会有好运！\n";
			ff=false;
			o+=10000000; 
			Sleep(1000);
		}
		if(k=="xhzdsg"&&fl==true)
		{
			Sleep(1000);
			cout<<"没想到我藏得这么深，还是被你发现了！奖励1000万，记得3连一下作者，过年会有好运！\n";
			fl=false;
			o+=10000000; 
			Sleep(1000);
		}
		if(k=="11")
		{
			Sleep(400);
			cout<<"再见！\n";
			Sleep(400);
			return 0;
		}
		if(k=="10")
		{
			cout<<"伤害："<<sh<<endl;
			Sleep(1000);
			cout<<"防御："<<fy<<endl;
			Sleep(1000);
			cout<<"血量："<<xxl<<endl;
			Sleep(1000);
			cout<<"金币："<<o<<endl;
			Sleep(1000);
		}
		if(k=="9")
		{
			if(m<3)
			{
				cout<<"你还没资格进入最终区域！\n";
				Sleep(1000);
			}
			else
			{
				cout<<"你进入了大厦,发现一个守卫也没有。\n";
				Sleep(1000);
				cout<<"你:'不应该呀？理当来说核心区域的戒备应该更严密，为啥连个人影也没看到？'。\n";
				Sleep(1000);
				cout<<"忽然,你看见3名警察向你跑来。\n";
				if(sh<500)
				{
					Sleep(1000);
					cout<<"你输了。\n";
					Sleep(1000);
				}
				else
				{
					Sleep(1000);
					cout<<"你赢了。\n";
					Sleep(1000);
					cout<<"这时，你看见市长走来了。\n"; 
					Sleep(1000);
					cout<<"市长:'你以为我们不认得你了,错,我们早已做出来你的克隆体！'。\n";
					Sleep(1000);
					cout<<"市长拿出了魔法棒,变成了你,向你杀来。\n";
					if(sh>50000) 
					{
						Sleep(1000);
						cout<<"你赢了,你成为了这个世界的拯救者,游戏胜利！\n"; 
						x='N';
						Sleep(1000);
					}
					else
					{
						Sleep(1000);
						cout<<"你输了！\n";
						Sleep(1000);
					}
				}
			}
		}
		if(k=="8")
		{
			Sleep(1000);
			cout<<"你看见局长带领着许多坦克向你杀来。\n";
			Sleep(1000);
			cout<<"局长:'为了之后我们能继续压榨人民，兄弟们，给我杀了他！！！'\n";
			if(sh>5000)
			{
				Sleep(1000);
				cout<<"你赢了！\n";
				Sleep(1000);
				m++;
			} 
			else
			{
				Sleep(1000);
				cout<<"你输了！\n";
				Sleep(1000);
			} 
		}
		if(k=="7")
		{
			Sleep(1000);
			cout<<"你看见长官正在毒打他的部队,你十分生气,不由分说,与他扭打在了一起。\n";
			Sleep(1000);
			if(sh>1000)
			{
				Sleep(1000);
				cout<<"你赢了";
				Sleep(1000);
				m++;
			}
			else
			{
				Sleep(1000);
				cout<<"你输了";
				Sleep(1000);
			}
		}
		if(k=="6")
		{
			Sleep(1000);
			cout<<"你来到工地，发现员工们在烈日下埋头苦干，而厂长正在吹着空调，喝着饮料。\n";
			Sleep(1000);
			cout<<"虽然你是歹徒，但你看不下去了，你想要与厂长谈判，他不听，便与你打了起来。\n";
			if(sh>500)
			{
				Sleep(1000);
				cout<<"你赢了，大家都为你欢呼了起来。\n";
				Sleep(1000);
			}
			else
			{
				Sleep(1000);
				cout<<"你输了。\n";
				Sleep(1000);
			} 
		}
		if(k=="5")
		{
			Sleep(1000);
			cout<<"是否花1000元整容？(1 or 2)。\n";
			cin>>sum;
			if(sum==1)
			{
				o-=1000;
				Sleep(1000);
				cout<<"整容成功！\n";
				Sleep(1000);
			}
			else
			{
				Sleep(1000);
				cout<<"行吧。\n";
				Sleep(1000);	
			}
		}
		if(k=="4")
		{
			Sleep(1000);
			cout<<"赌场是一个可以快速暴富的地方,请选择您要玩的项目。\n";
			Sleep(1000);
			cout<<"1.大转盘 (概率 1%)\n";
			cout<<"2.赌押金 (概率 0.5%)\n";
			cout<<"3.头骰子 (概率 1.5%)\n";
			cout<<"4.翻翻机 (概率 1.2%)\n";
			cout<<"5.退出\n";
			cin>>xz;
			if(xz==5)
			{
			 	Sleep(1000);
				cout<<"行吧。\n";
				Sleep(1000);
			} 
			else 
			{
				Sleep(1000);
				cout<<"你要付多少元赌金？\n";
				cin>>dj;
				o-=dj; 
				srand(time(0));
				sb=rand()%4;
				if (sb==1)
				{
					Sleep(1000);
					cout<<"你输了，赌金扣光！\n";
					Sleep(1000);
				}
				if (sb==2)
				{
					Sleep(1000);
					cout<<"平局！\n";
					o+=dj;
					Sleep(1000);
				}
				if(sb==3)
				{
					Sleep(1000);
					cout<<"你赢了，赌金翻倍！\n";
					o+=dj*2;
					Sleep(1000);
				}
			}
		}
		if(k=="3")
		{
			Sleep(1000);
			cout<<"是否花1000元进行治疗？(1 or 2)\n";
			cin>>zl;
			if(zl==2)
			{
				Sleep(1000);
				cout<<"行吧。\n";
				Sleep(1000);
			}
			else if (xxl<yxl)
			{
				xxl=yxl;
				Sleep(1000);
				cout<<"治疗成功！\n";
				Sleep(1000);
			}
			else
			{
				Sleep(1000);
				cout<<"你很健康，无需治疗！\n";
				Sleep(1000);
			} 
		}
		if(k=="2")
		{
			Sleep(1000);
			cout<<"您要干什么？\n";
			Sleep(1000);
			cout<<"1.办物业 2.抢劫 3.退出\n";
			cin>>d;
			if(d==2)
			{
				Sleep(1000);
				cout<<"老板:'来人啊，有人抢劫啊！'\n";
				Sleep(1000);
				cout<<"你看见三名警察向你冲来。\n";
				if(sh>150) 
				{
					Sleep(1000);
					cout<<"你赢了，抢到了1000元，伤害加十，血量加十。\n";
					sh+=10;
					o+=1000;
					yxl+=10;
					xxl+=10;
					Sleep(1000);	
				}
				else 
				{
					Sleep(1000);
					cout<<"你输了。\n";
					Sleep(1000);
				}
			}
			else if(d==1) 
			{
				Sleep(1000);
				cout<<"你是否办物业？金额10万元 (1.可以 or 2.不了) \n";
				Sleep(1000);
				cin>>d;
				if(d==1)
				{
					if(o>=100000)
					{
						o-=100000;
						Sleep(1000);
						cout<<"请选择你的物业主方向\n"<<"1.治安 2.儿童类 3.快递 4.活动 5.外卖\n";
						Sleep(1000);
						cin>>d;
						Sleep(1000);
						cout<<"我们将会把5年的利润给你，同时取消物业\n";
						o+=wysr[d]*5-wyzc[d]*5;
					}
					else
					{	
						Sleep(1000);
						cout<<"你的钱不够！\n";
						Sleep(1000);
					}
				}
			}
			else 
			{
				Sleep(1000);
				cout<<"行吧。\n";
				Sleep(1000);
			}
		}
		if(k=="1")
		{
			Sleep(1000);
			cout<<"老板:'请问你要买什么？'.'\n";
			Sleep(1000);
			cout<<"1.青龙偃月刀		伤害100		     4000元\n"; 
			cout<<"2.水火之盾		防御150		     2000元\n";
			cout<<"3.手雷		        伤害50		      100元\n";
			cout<<"4.诸葛连弩		伤害1000	     6000元\n";
			cout<<"5.雌雄双股剑		伤害3000	    15000元\n";
			cout<<"6.聚能脉冲跑		伤害88888	   150000元\n";
			cout<<"7.伪.星月神弓	        伤害666666	  1000000元\n";
			cout<<"8.神.创世之刃	        伤害1000000	100000000元\n";
			cout<<"0.退出\n";
			cin>>xh;
			if(xh!=0&&o>=f[xh])
			{
				o-=f[xh];
				if(xh!=2) sh+=f1[xh];
				else fy+=f1[2];
				Sleep(1000);
				cout<<"你成功买下来了！\n";
				Sleep(1000);
			}
			if(o<f[xh])
			{
				Sleep(1000);
				cout<<"你的钱不够！\n";
				Sleep(1000);
			}
		}
	}
	return 0;
}

#include <bits/stdc++.h>
#include <windows.h>
#include <ctime>
#include <limits>
using namespace std;

const double DEFAULT_SLEEP_TIME = 1.2;
const int DEFAULT_COLOR = 15;
const int MAX_ITEMS = 10;
const int MAX_TASKS = 10; // 最大任务数量

// 玩家属性结构体
struct Player {
    long long silver;
    long long combat;
    long long speed;
    string name;
    bool has_map;
    bool has_eye;
    bool has_yinyang;
    string items[MAX_ITEMS];
    int item_count;
};

// 任务结构体
struct Task {
    string name;        // 任务名称
    string desc;        // 任务描述
    string reward_desc; // 奖励描述
    long long reward_silver;  // 奖励银子
    long long reward_combat;  // 奖励战力
    long long reward_speed;   // 奖励速度
    string reward_item;       // 奖励道具
    bool is_completed;  // 是否完成
    bool is_received;   // 是否领取
};

// 商店道具结构体
struct ShopItem {
    string name;
    long long price;
    string desc;
};

Player player;
Task tasks[MAX_TASKS]; // 任务列表
int task_count = 0;    // 当前任务数量

ShopItem shop_items[] = {
    {"千年人参", 800, "使用后战力+300"},
    {"摸金符", 500, "使用后速度+200"},
    {"大力丸", 300, "使用后战力+100"},
    {"疾风靴", 400, "使用后速度+150"},
    {"止血散", 200, "战斗失败后恢复100战力"}
};
const int SHOP_ITEM_COUNT = sizeof(shop_items) / sizeof(ShopItem);

void clean() { system("cls"); }
void sleep_seconds(double n) { Sleep(static_cast<DWORD>(n * 1000)); }
void set_color(short n) { SetConsoleTextAttribute(GetStdHandle(STD_OUTPUT_HANDLE), n); }

void init_random() {
    srand(static_cast<unsigned int>(time(0)));
}

int random_int(int first, int second) {
    int min_val = min(first, second);
    int max_val = max(first, second);
    return rand() % (max_val - min_val + 1) + min_val;
}

void print_random_color(const string& msg) {
    int color = random_int(9, 14);
    set_color(color);
    cout << msg << endl;
    set_color(DEFAULT_COLOR);
}

void show_attributes() {
    set_color(11);
    cout << "================= 玩家属性 =================" << endl;
    set_color(DEFAULT_COLOR);
    printf("银子：%lld\t战力：%lld\t速度：%lld\n", player.silver, player.combat, player.speed);
    cout << "特殊能力：";
    if (player.has_yinyang) cout << "阴阳轮转 ";
    if (player.has_eye) cout << "神霄天目 ";
    if (!player.has_yinyang && !player.has_eye) cout << "无";
    cout << endl;
    cout << "持有道具：";
    if (player.item_count == 0) cout << "无";
    else for (int i = 0; i < player.item_count; i++) cout << player.items[i] << " ";
    cout << "\n===========================================\n\n";
}

void add_item(const string& item_name) {
    if (player.item_count < MAX_ITEMS) {
        player.items[player.item_count++] = item_name;
        print_random_color("叮！获得道具：" + item_name);
    } else {
        set_color(12);
        cout << "道具栏已满，无法获得新道具！" << endl;
        set_color(DEFAULT_COLOR);
    }
}

void use_item_internal(int idx) {
    string item = player.items[idx];
    if (item == "千年人参") {
        player.combat += 300;
        char msg[100];
        sprintf(msg, "使用千年人参，战力+300！当前战力：%lld", player.combat);
        print_random_color(msg);
    } else if (item == "摸金符") {
        player.speed += 200;
        char msg[100];
        sprintf(msg, "使用摸金符，速度+200！当前速度：%lld", player.speed);
        print_random_color(msg);
    } else if (item == "大力丸") {
        player.combat += 100;
        char msg[100];
        sprintf(msg, "使用大力丸，战力+100！当前战力：%lld", player.combat);
        print_random_color(msg);
    } else if (item == "疾风靴") {
        player.speed += 150;
        char msg[100];
        sprintf(msg, "使用疾风靴，速度+150！当前速度：%lld", player.speed);
        print_random_color(msg);
    } else if (item == "止血散") {
        player.combat += 100;
        char msg[100];
        sprintf(msg, "使用止血散，战力+100！当前战力：%lld", player.combat);
        print_random_color(msg);
    } else if (item == "大荒地图") {
        set_color(12);
        cout << "大荒地图无法使用，是探索古墓的必备道具！" << endl;
        set_color(DEFAULT_COLOR);
        sleep_seconds(DEFAULT_SLEEP_TIME);
        return;
    } else {
        set_color(13);
        cout << "该道具暂时无法使用！" << endl;
        set_color(DEFAULT_COLOR);
        sleep_seconds(DEFAULT_SLEEP_TIME);
        return;
    }

    for (int i = idx; i < player.item_count - 1; i++)
        player.items[i] = player.items[i+1];
    player.item_count--;
    print_random_color("道具已使用！");
    sleep_seconds(DEFAULT_SLEEP_TIME);
}

void item_management() {
    while (true) {
        clean();
        set_color(13);
        cout << "\n\n\t\t【道具管理】\n\n";
        set_color(DEFAULT_COLOR);
        cout << "当前银子：" << player.silver << "两\n\n";
        cout << "【我的道具】\n";
        if (player.item_count == 0) cout << "暂无道具\n";
        else for (int i = 0; i < player.item_count; i++)
            cout << i+1 << ". " << player.items[i] << endl;

        cout << "\n【操作选项】\n1. 使用道具\n2. 返回主菜单\n请选择操作（1-2）：";
        int choice;
        while (!(cin >> choice) || choice <1 || choice>2) {
            cin.clear(); cin.ignore(1e9,'\n');
            set_color(12); cout << "输入无效！请输入1或2："; set_color(DEFAULT_COLOR);
        }
        if (choice ==2) break;

        if (player.item_count ==0) {
            set_color(12); cout << "\n没有道具可使用！" << endl; set_color(DEFAULT_COLOR);
            sleep_seconds(DEFAULT_SLEEP_TIME); continue;
        }

        cout << "\n请选择要使用的道具编号（0返回）：";
        int item_choice;
        while (!(cin >> item_choice) || item_choice <0 || item_choice > player.item_count) {
            cin.clear(); cin.ignore(1e9,'\n');
            set_color(12); cout << "输入无效！请输入0-" << player.item_count << "："; set_color(DEFAULT_COLOR);
        }
        if (item_choice ==0) continue;
        use_item_internal(item_choice -1);
    }
}

void shop_system() {
    while (true) {
        clean();
        set_color(10); cout << "\n\n\t\t【大荒杂货铺】\n\n"; set_color(DEFAULT_COLOR);
        cout << "当前银子：" << player.silver << "两\n\n";
        cout << "【出售道具】\n";
        for (int i=0; i<SHOP_ITEM_COUNT; i++)
            cout << i+1 << ". " << shop_items[i].name << " - " << shop_items[i].price << "两 (" << shop_items[i].desc << ")\n";

        cout << "\n" << SHOP_ITEM_COUNT+1 << ". 返回主菜单\n请选择（" << SHOP_ITEM_COUNT+1 << "返回）：";
        int choice;
        while (!(cin >> choice) || choice <1 || choice > SHOP_ITEM_COUNT+1) {
            cin.clear(); cin.ignore(1e9,'\n');
            set_color(12); cout << "输入无效！1-" << SHOP_ITEM_COUNT+1 << "："; set_color(DEFAULT_COLOR);
        }
        if (choice == SHOP_ITEM_COUNT+1) break;

        ShopItem& it = shop_items[choice-1];
        if (player.silver >= it.price) {
            player.silver -= it.price;
            char msg[100];
            sprintf(msg, "花费%lld两购买%s！剩余：%lld", it.price, it.name.c_str(), player.silver);
            print_random_color(msg);
            add_item(it.name);
        } else {
            set_color(12); cout << "\n银子不足！" << endl; set_color(DEFAULT_COLOR);
        }
        sleep_seconds(DEFAULT_SLEEP_TIME);
    }
}

// ===================== 【任务系统】 =====================
// 初始化任务
void init_tasks() {
    task_count = 4;

    // 主线任务1
    tasks[0] = {
        "初次探索",
        "完成一次古墓探索",
        "奖励：银子500，战力200",
        500, 200, 0, "", false, false
    };

    // 主线任务2
    tasks[1] = {
        "战胜怪物",
        "在战斗中击败一只古墓怪物",
        "奖励：银子800，道具大力丸",
        800, 0, 0, "大力丸", false, false
    };

    // 每日任务1
    tasks[2] = {
        "每日历练",
        "累计探索古墓2次",
        "奖励：银子300，速度100",
        300, 0, 100, "", false, false
    };

    // 每日任务2
    tasks[3] = {
        "宝箱猎人",
        "开启一个神秘宝箱",
        "奖励：银子400，战力150",
        400, 150, 0, "", false, false
    };
}

// 提交任务，领取奖励
void submit_task(int idx) {
    Task& t = tasks[idx];
    if (!t.is_completed) {
        set_color(12); cout << "任务尚未完成，无法领取奖励！" << endl; set_color(DEFAULT_COLOR);
        sleep_seconds(DEFAULT_SLEEP_TIME); return;
    }
    if (t.is_received) {
        set_color(13); cout << "已领取过该任务奖励！" << endl; set_color(DEFAULT_COLOR);
        sleep_seconds(DEFAULT_SLEEP_TIME); return;
    }

    // 发放奖励
    player.silver += t.reward_silver;
    player.combat += t.reward_combat;
    player.speed += t.reward_speed;
    if (!t.reward_item.empty()) add_item(t.reward_item);

    t.is_received = true;
    print_random_color("任务完成！领取奖励成功！");
    sleep_seconds(DEFAULT_SLEEP_TIME);
}

// 任务主界面
void task_system() {
    while (true) {
        clean();
        set_color(14); cout << "\n\n\t\t【任务系统】\n\n"; set_color(DEFAULT_COLOR);
        show_attributes();

        cout << "【可接/已接任务】\n";
        for (int i=0; i<task_count; i++) {
            cout << i+1 << ". " << tasks[i].name << "\n";
            cout << "   描述：" << tasks[i].desc << "\n";
            cout << "   奖励：" << tasks[i].reward_desc << "\n";
            cout << "   状态：";
            if (tasks[i].is_received) cout << "已完成并领奖";
            else if (tasks[i].is_completed) cout << "可领奖";
            else cout << "未完成";
            cout << "\n----------------------------------------\n";
        }

        cout << "\n【操作】\n1. 领取任务奖励\n2. 返回主菜单\n请选择（1-2）：";
        int c;
        while (!(cin >> c) || c<1 || c>2) {
            cin.clear(); cin.ignore(1e9,'\n');
            set_color(12); cout << "无效输入！："; set_color(DEFAULT_COLOR);
        }
        if (c ==2) break;

        cout << "\n请选择要领奖的任务编号（0返回）：";
        int idx;
        while (!(cin >> idx) || idx<0 || idx>task_count) {
            cin.clear(); cin.ignore(1e9,'\n');
            set_color(12); cout << "无效！0-" << task_count << "："; set_color(DEFAULT_COLOR);
        }
        if (idx ==0) continue;
        submit_task(idx-1);
    }
}

// 探索完成后自动完成任务
void check_explore_task() {
    if (!tasks[0].is_completed) tasks[0].is_completed = true;
    if (!tasks[2].is_completed) tasks[2].is_completed = true;
}

// 击败怪物后完成任务
void check_kill_task() {
    if (!tasks[1].is_completed) tasks[1].is_completed = true;
}

// 开启宝箱后完成任务
void check_chest_task() {
    if (!tasks[3].is_completed) tasks[3].is_completed = true;
}
// ======================================================

void save_progress() {
    ofstream f("save_data.txt");
    if (f) {
        f << player.name << endl;
        f << player.silver << " " << player.combat << " " << player.speed << endl;
        f << player.has_map << " " << player.has_eye << " " << player.has_yinyang << endl;
        f << player.item_count << endl;
        for (int i=0; i<player.item_count; i++) f << player.items[i] << endl;

        // 保存任务
        f << task_count << endl;
        for (int i=0; i<task_count; i++)
            f << tasks[i].is_completed << " " << tasks[i].is_received << endl;

        f.close();
        print_random_color("进度保存成功！");
    } else {
        set_color(12); cout << "保存失败！" << endl; set_color(DEFAULT_COLOR);
    }
    sleep_seconds(DEFAULT_SLEEP_TIME);
}

void load_progress() {
    ifstream f("save_data.txt");
    if (f) {
        player.item_count =0;
        f >> player.name;
        f >> player.silver >> player.combat >> player.speed;
        f >> player.has_map >> player.has_eye >> player.has_yinyang;

        int n; f >> n;
        for (int i=0; i<n; i++) {
            string it; getline(f>>ws, it);
            if (player.item_count < MAX_ITEMS)
                player.items[player.item_count++] = it;
        }

        // 加载任务
        f >> task_count;
        for (int i=0; i<task_count; i++)
            f >> tasks[i].is_completed >> tasks[i].is_received;

        f.close();
        print_random_color("进度加载成功！欢迎回来，" + player.name + "！");
    } else {
        set_color(12); cout << "无存档！" << endl; set_color(DEFAULT_COLOR);
    }
    sleep_seconds(DEFAULT_SLEEP_TIME);
}

void event_chest() {
    set_color(10); cout << "\n你发现了宝箱！" << endl; sleep_seconds(DEFAULT_SLEEP_TIME);
    check_chest_task(); // 完成宝箱任务

    int t = random_int(1,3);
    if (t==1) {
        int s = random_int(500,2000); player.silver +=s;
        char m[50]; sprintf(m, "获得%d两银子！", s); print_random_color(m);
    } else if (t==2) {
        int c = random_int(200,800); player.combat +=c;
        char m[50]; sprintf(m, "战力+%d！", c); print_random_color(m);
    } else add_item("千年人参");
    sleep_seconds(DEFAULT_SLEEP_TIME);
}

void event_monster() {
    set_color(12);
    string ms[] = {"尸蹩","血尸","粽子","阴兵","螭龙"};
    string name = ms[random_int(0,4)];
    int c = random_int(300,1500);
    cout << "\n遇到" << name << "！战力：" << c << endl;
    sleep_seconds(DEFAULT_SLEEP_TIME);

    cout << "1.战斗 2.逃跑：";
    int ch;
    while (!(cin>>ch)||ch<1||ch>2) {
        cin.clear();cin.ignore(1e9,'\n');
        set_color(12);cout<<"无效！1或2：";set_color(DEFAULT_COLOR);
    }

    if (ch==1) {
        cout << "\n战斗中..." << endl; sleep_seconds(1.5);
        if (player.combat >= c) {
            set_color(10); cout << "胜利！击败" << name << endl;
            check_kill_task(); // 完成击杀任务
            int s = random_int(300,1000); player.silver +=s;
            char m[50];sprintf(m,"获得%d两！",s);print_random_color(m);
            if (random_int(1,3)==1) add_item("摸金符");
        } else {
            set_color(12); cout << "失败！" << endl;
            player.silver -=200; if (player.silver <0) player.silver =0;
            cout << "损失200两，剩余：" << player.silver << endl;

            bool has = false; int id =-1;
            for (int i=0; i<player.item_count; i++)
                if (player.items[i] == "止血散") { has=1; id=i; break; }
            if (has) {
                player.combat +=100;
                char m[100];sprintf(m,"自动使用止血散，战力+100：%lld",player.combat);
                print_random_color(m);
                for (int i=id; i<player.item_count-1; i++)
                    player.items[i] = player.items[i+1];
                player.item_count--;
            }
        }
    } else {
        if (player.speed >=50) {
            set_color(11);cout<<"成功逃跑！"<<endl;
        } else {
            set_color(12);cout<<"没逃脱！受伤！战力-100"<<endl;
            player.combat -=100; if (player.combat <0) player.combat=0;
        }
    }
    sleep_seconds(DEFAULT_SLEEP_TIME);
}

void explore_scene() {
    clean();
    set_color(9);cout<<"\n\n\t\t【古墓探索】\n\n";set_color(DEFAULT_COLOR);
    string sc[] = {"前殿","甬道","耳室","主墓室","藏宝室","陪葬坑"};
    string name = sc[random_int(0,5)];
    cout << "进入：" << name << endl;
    sleep_seconds(DEFAULT_SLEEP_TIME);

    check_explore_task(); // 探索任务完成

    int e = random_int(1,4);
    switch(e) {
        case 1: event_chest(); break;
        case 2: event_monster(); break;
        case 3:
            set_color(14);cout<<"\n发现壁画！速度+50"<<endl;
            player.speed +=50;
            char m[100];sprintf(m,"当前速度：%lld",player.speed);
            print_random_color(m);
            sleep_seconds(DEFAULT_SLEEP_TIME); break;
        default:
            set_color(13);cout<<"\n空空如也"<<endl;
            sleep_seconds(DEFAULT_SLEEP_TIME); break;
    }
    cout << "\n按回车返回...";
    cin.ignore(); cin.get();
}

int show_main_menu() {
    clean();
    show_attributes();
    set_color(14);cout<<"\t\t【盗墓传奇 - 主菜单】\n\n";set_color(DEFAULT_COLOR);
    cout << "1. 继续探索\n";
    cout << "2. 道具管理\n";
    cout << "3. 商店购买\n";
    cout << "4. 保存进度\n";
    cout << "5. 加载进度\n";
    cout << "6. 退出游戏\n";
    cout << "7. 任务系统\n";  // 新增
    cout << "\n请选择（1-7）：";

    int c;
    while (!(cin>>c)||c<1||c>7) {
        cin.clear();cin.ignore(1e9,'\n');
        set_color(12);cout<<"无效！1-7：";set_color(DEFAULT_COLOR);
    }
    return c;
}

void init_game() {
    player.silver =0;
    player.combat=0;
    player.speed=0;
    player.has_map=0;
    player.has_eye=0;
    player.has_yinyang=0;
    player.item_count=0;

    init_tasks(); // 初始化任务

    cout << endl; sleep_seconds(1);
    set_color(DEFAULT_COLOR); cout << "   盗墓传奇\n"; sleep_seconds(1);
    cout << "作者：xhyqj\n"; sleep_seconds(1);
    cout << "监制：元始天尊\n"; sleep_seconds(1);
    cout << "第一体验者：xhyqj\n"; sleep_seconds(1);
    cout << "支持者：xhmzw\n"; sleep_seconds(1.5);

    clean();
    cout << "请输入姓名："; cin >> player.name;
    cout << "欢迎 " << player.name << "！" << endl;
    sleep_seconds(DEFAULT_SLEEP_TIME);

    clean(); show_attributes(); sleep_seconds(DEFAULT_SLEEP_TIME);

    cout << "收到大荒信件，是否打开？(T/F)：";
    char ch; cin >> ch;
    cin.ignore(1e9,'\n');

    if (ch == 'F' || ch == 'f') {
        sleep_seconds(1); cout << "被窃魂符拉入阴间！\n"; sleep_seconds(1);
        cout << "看到老者，是否上前？(T/F)："; cin >> ch;

        if (ch == 'F' || ch == 'f') {
            sleep_seconds(1); cout << "魔神出现！\n"; sleep_seconds(1.5);
            clean();
            int col = random_int(9,14); set_color(col);
            cout << "    ▉      ▉                 ▉▉▉▉▉▉▉▉▉▉▉▉ ▉▉▉▉▉▉▉▉▉▉▉\n";
            cout << "   ▉▋    ▉▉▉▉▉▉▉▉▉      ▉        ▉                           ▉\n";
            cout << "  ▉ ▉   ▉       ▉     ▉      ▉         ▉     ▉                 ▉\n";
            cout << " ▉  ▉            ▉            ▉▉▉▉▉  ▉   ▉                ▉\n";
            cout << "     ▉            ▉           ▉ ▉    ▉  ▉ ▉               ▉\n";
            cout << "     ▉       ▉   ▉   ▉     ▉   ▉ ▉    ▉▉                  ▉\n";
            cout << "     ▉      ▉    ▉    ▉         ▉       ▉▋                    ▉\n";
            cout << "     ▉     ▉     ▉     ▉      ▉         ▉        ▉       ▉  ▉\n";
            cout << "     ▉          ▉▉           ▉           ▉▉▉▉▉▉          ▉\n";
            set_color(DEFAULT_COLOR); sleep_seconds(2);
            cout << "\n游戏结束！\n"; exit(0);
        } else {
            sleep_seconds(1); cout << "老者赠予你宝物！\n"; sleep_seconds(1);
            print_random_color("银子+1000，战力+500，速度+100！");
            player.silver +=1000; player.combat +=500; player.speed +=100;
            sleep_seconds(1);
            print_random_color("获得：阴阳轮转"); player.has_yinyang=1;
            sleep_seconds(1);
            print_random_color("获得：神霄天目"); player.has_eye=1;
            sleep_seconds(1);
            print_random_color("获得：大荒地图"); player.has_map=1; add_item("大荒地图");
            sleep_seconds(1);
        }
    } else {
        sleep_seconds(1); cout << "获得地图、银子、功法！\n"; sleep_seconds(1);
        print_random_color("获得大荒地图！"); player.has_map=1; add_item("大荒地图");
        print_random_color("银子+100，战力+500！");
        player.silver +=100; player.combat +=500;
        sleep_seconds(1.5);
    }
}

void game_loop() {
    while (true) {
        int c = show_main_menu();
        switch(c) {
            case 1:
                if (player.has_map) explore_scene();
                else {
                    set_color(12);cout<<"无地图无法探索！"<<endl;set_color(DEFAULT_COLOR);
                    sleep_seconds(1);
                } break;
            case 2: item_management(); break;
            case 3: shop_system(); break;
            case 4: save_progress(); break;
            case 5: load_progress(); break;
            case 6:
                clean(); set_color(14); cout << "感谢游玩！\n"; set_color(DEFAULT_COLOR); exit(0);
            case 7: task_system(); break; // 任务
            default: break;
        }
    }
}

int main() {
    init_random();
    init_game();
    game_loop();
    return 0;
}