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답안 #974650

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
974650 2024-05-03T15:04:49 Z vjudge1 Trol (COCI19_trol) C++17
50 / 50
 1 ms 348 KB 
#include "bits/stdc++.h"
using namespace std;
#define int long long
#define MOD 1000000007
#define pii pair<int , int>
#define sz size
#define pb push_back
#define se second
#define fi first
const int INF = 1e18;

signed main(){

	int q;	cin >> q;
	while(q--){
		int l , r;	cin >> l >> r;
		if(l == 1){
			cout << (r/9)*45 + ((r%9) * ((r%9)+1))/2 << '\n';
		}	
		else{
			int right =  (r/9)*45 + ((r%9) * ((r%9)+1))/2;
			l--;
			int left = (l/9)*45 + ((l%9) * ((l%9)+1))/2;
			cout << right - left << '\n';
		}
	}

}

Subtask #1
50.0 / 50.0

# 결과 실행 시간 메모리 Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 1 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 1 ms 348 KB Output is correct
5 Correct 1 ms 348 KB Output is correct