题解

#include<bits/stdc++.h>
#define ll long long                                                        //防伪标识
#define MAXN 1005
#define maxn 10005
#define MAXM 10000
#define maxm 1000005
using namespace std;
int n,m;
int a;
int sum;
int main(){
	cin>>m>>n;
	for(int i = 1;i<=n;i++){
		cin>>a;
		if(a >m) sum++;
		else m-=a;
	}
	cout<<sum;
	return 0;
}