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답안 #223867

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
223867 2020-04-16T17:00:20 Z penguinhacker Trol (COCI19_trol) C++14
50 / 50
 5 ms 384 KB 
//TASK: Trol

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

#define ll long long

int main() {
	ios::sync_with_stdio(0);
	cin.tie(0);

	int t;
	cin >> t;
	while(t--) {
		ll l, r, n;
		cin >> l >> r;
		n = r-l+1;
		ll cycles = n/9;
		ll ans = cycles*45;
		r -= cycles*9;
		for (ll i=l; i<=r; ++i) {
			ll k = i%9;
			ans += (k==0?9:k);
		}
		cout << ans << '\n';
	}
	return 0;
}

Subtask #1
50.0 / 50.0

# 결과 실행 시간 메모리 Grader output
1 Correct 5 ms 384 KB Output is correct
2 Correct 5 ms 384 KB Output is correct
3 Correct 5 ms 384 KB Output is correct
4 Correct 5 ms 384 KB Output is correct
5 Correct 5 ms 384 KB Output is correct