#include #include using namespace std; int main() { int n, s; vector< int > score(101, 0), a; cin >> n; a.resize(n); for(int i=0;i> a[i]; } for(int i=0;i> s; score[s] += a[i]; } for(int i=1;i<=100;++i){ if(score[0] < score[i]){ cout << "NO" << endl; return 0; } } cout << "YES" << endl; return 0; }