#include<iostream> #include<vector> #include<algorithm> using namespace std; int main() { int a,b,c; int sum = 0; int cnt = 0; vector<int> boxes; cin >> a >> b; for (int i=0; i<b; ++i) { cin >> c; boxes.push_back(c); } sort(boxes.begin(), boxes.end()); for (int i=0; i<boxes.size(); ++i) { a -= boxes[i]; if (a >= 0) { ++cnt; }else{ break; } } cout << cnt << endl; return 0; }