#include<iostream>
#include<algorithm>
#include<vector>

int main(){
    int capacity,allblocksnum;
    std::cin >> capacity >> allblocksnum;
    std::vector<int> in(allblocksnum);
    for(int i=0;i<allblocksnum;i++){
        std::cin >> in[i];
    }
    std::sort(in.begin(),in.end());
    
    int widthsum=0;
    int blocksnuminbox=0;
    for(int w : in){
        if(widthsum+w > capacity)
            break;
        widthsum+=w;
        blocksnuminbox++;
    }
    std::cout << blocksnuminbox << std::endl;
}