문제
풀이
#include <iostream>
using namespace std;
void solve(void) {
int n; cin >> n;
int ans = 0;
while (n--) {
int s, c, a, r; cin >> s >> c >> a >> r;
if (s >= 1000 || c >= 1600 || a >= 1500 || (1 <= r && r <= 30)) ans++;
}
cout << ans;
}
int main(void) {
ios::sync_with_stdio(false);
cin.tie(nullptr);
solve();
return 0;
}