Submission #975558

#	Time	Username	Problem	Language	Result	Execution time	Memory
975558		vjudge1	Trol (COCI19_trol)	C++17	50 / 50	1 ms	392 KiB

trol

#include <bits/stdc++.h>
#define ll long long
using namespace std;

bool bad[105] = {};
int main() {
	ios_base::sync_with_stdio(0); cin.tie(0); cout.tie(0);
	int Q;
	ll L, R;
	cin >> Q;
	while (Q--) {
		cin >> L >> R;
		ll ans = (R/9) * 45 + ((R%9) * (R%9 + 1)) / 2;
		if (L > 1) {
			L--;
			ans -= (L/9) * 45 + ((L%9) * (L%9 + 1)) / 2;
		}
		cout << ans << '\n';
	}
}

• Subtask 1: 50 / 50