求大佬看看我怎么错了

#include <iostream>
using namespace std;
int V,n;
int w[50];
int dp[50][20005];
int main(){
	//freopen("data.in","r",stdin);
	cin>>V>>n;
	for(int i = 1;i <= n;++i) cin>>w[i];
	//for(int i = 0;i <= V;++i) dp[0][i] = i;
	for(int i = 1;i <= n;++i){
		for(int j = 0;j <= V;++j){
			dp[i][j] = dp[i - 1][j];
			if(j >= w[i]) dp[i][j] = min(dp[i][j],dp[i - 1][j - w[i]] + w[i]);
		}
	}
	cout<<V - dp[n][V]<<endl;
	return 0;
}