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#include<iostream>
#include<algorithm>
using namespace std;
int a[105];
int main(){
int n,s,sum=0;
cin>>s>>n;
for(int i=0;i<n;i++){
cin>>a[i];
if(s>=a[i]){
s-=a[i];
sum++;
}
}
cout<<n-sum;
return 0;
}