문제
풀이
#include <iostream>
#include <vector>
using namespace std;
bool solve(void) {
vector<int> t(4);
for (int i=0; i<4; i++) cin >> t[i];
int sum = 300;
for (int i=0; i<4; i++) sum += t[i];
return sum <= 1800;
}
int main(void) {
ios::sync_with_stdio(false);
cin.tie(nullptr);
cout << (solve() ? "Yes" : "No");
return 0;
}