• 个人简介

    加快cin和cout的

    ios::sync_with_stdio(false);
    cin.tie(nullptr);
     // 设置缓冲区大小
    cin.rdbuf()->pubsetbuf(0, 0);
    cout.rdbuf()->pubsetbuf(0, 0);
    
    int read()//快读
    {
        int x=0;
        char c=getchar();
        while(c<'0'||c>'9') c=getchar();
        while(c>='0'&&c<='9')
    	{
            x=x*10+(c-'0');
            c=getchar();
        }
        return x;
    }
    void write(int x)//快输
    {
        if(x<0)
    	{
            putchar('-');
            x=-x;
        }
        if(x/10) write(x/10);
        putchar('0'+x%10);
    }
    
    ios_base::sync_with_stdio(false);
    cin.tie(nullptr);      
    // 设置自定义缓冲区(1MB)     
    constexpr int BUFFER\_SIZE = 1 << 20;     
    char buffer[BUFFER\_SIZE];     
    cin.rdbuf()->pubsetbuf(buffer, BUFFER\_SIZE);     
    cout.rdbuf()->pubsetbuf(buffer, BUFFER\_SIZE);
    
    // 核心优化设置     
    ios\_base::sync\_with\_stdio(false);     
    cin.tie(nullptr);          
    // 缓冲区设置     
    constexpr int BUFFER\_SIZE = 1 << 20; // 1MB     
    static char in\_buffer[BUFFER\_SIZE];     
    static char out\_buffer[BUFFER\_SIZE];  
    cin.rdbuf()->pubsetbuf(in\_buffer, BUFFER\_SIZE);    
    cout.rdbuf()->pubsetbuf(out\_buffer,BUFFER\_SIZE);
    
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    This person is lazy and didn't join any contests or homework.
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