【題目敘述】https://zerojudge.tw/ShowProblem?problemid=a148
#include <iostream>
using namespace std;
int main() {
int n;
while (cin >> n) {
int x, sum = 0;
for (int i = 0; i < n; i++) {
cin >> x;
sum += x;
}
if (sum > 59 * n) {
cout << "no\n";
} else {
cout << "yes\n";
}
}
return 0;
}