#include <cstdio>
#include <algorithm>

int main(){
    int L, N;
    int W[10000];

    scanf("%d %d", &L, &N);
    for(int i=0;i<N;i++){scanf("%d", W+i);}

    std::sort(W, W+N);

    int sum = 0, n = 0;
    for(int i=0;i<N;i++){
        if(sum + W[i] <= L){sum += W[i]; n += 1;}
    }

    printf("%d\n", n);
}