• 个人简介

    我的洛谷 yy yy yz

    yz yz yz

    ax,y×bka_{x,y} \times b_k

    ios::sync_with_stdio(false);
    cin.tie(0),cout.tie(0);
    
    #include<bits/stdc++.h>
    #define ll long long
    #define For(i,a,b) for(ll i=a;i<=b;i++)
    #define Dor(i,a,b) for(ll i=a;i>=b;i--)
    using namespace std;
    ll n,m,v[30100],w[30100],f[30100];
    int main()
    {
    	cin>>n>>m;
    	For(i,1,m) cin>>v[i]>>w[i];
    	For(i,1,m)
    		Dor(j,n,v[i]) f[j]=max(f[j],f[j-v[i]]+v[i]*w[i]);
    	cout<<f[n];
    }
    
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