```cpp
#include<bits/stdc++.h>
using namespace std;//开longlong捏
long long a[10000005],w[10005],v[10005],n,m;//都开小了捏
int main(){
cin>>m>>n;
for(int i=1;i<=n;i++){
cin>>w[i]>>v[i];
}
for(int i=1;i<=n;i++){
for(int j=w[i];j<=m;j++)
{
a[j]=max(a[j],a[j-w[i]]+v[i]);
}
}
cout<<a[m];
return 0;
}//给个关吧谢谢
```
@[lcx1](/user/1059541)
by z_z_b_ @ 2024-04-16 21:13:28