#define _CRT_SECURE_NO_WARNINGS //#define _GLIBCXX_DEBUG #include using namespace std; typedef long long ll; typedef vector vi; typedef vector vvi; typedef pair pii; #define all(c) (c).begin(), (c).end() #define loop(i,a,b) for(ll i=a; i ostream & operator<<(ostream & os, vector const &); template typename enable_if<(n>=sizeof...(T))>::type _ot(ostream &, tuple const &){} template typename enable_if<(n< sizeof...(T))>::type _ot(ostream & os, tuple const & t){ os << (n==0?"":" ") << get(t); _ot(os, t); } template ostream & operator<<(ostream & os, tuple const & t){ _ot<0>(os, t); return os; } template ostream & operator<<(ostream & os, pair const & p){ return os << "(" << p.first << ", " << p.second << ") "; } template ostream & operator<<(ostream & os, vector const & v){ rep(i,v.size()) os << v[i] << (i+1==(int)v.size()?"":" "); return os; } #ifdef DEBUG #define dump(...) (cerr<<#__VA_ARGS__<<" = "<> N && N){ int M; cin >> M; priority_queue q; rep(i,N){ int x; cin >> x; q.push(-x); } int ans = 0; while(M){ int t = -q.top(); q.pop(); t--; M--; if(t==0) ans++; else q.push(-t); } cout << ans << endl; } }