oj.uz

답안 #975302

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
975302 2024-05-04T17:42:22 Z vjudge1 Trol (COCI19_trol) C++17
50 / 50
 1 ms 516 KB 
#include<bits/stdc++.h>
#define pii pair<int,int>
#define fi first
#define se second
#define int long long
using namespace std;
const int maxn=1e5+5;
signed main() {
	int q; cin>>q;
	while(q--) {
		int l,r; cin>>l>>r;
		int k=(r/9)*45;
		int mk=((r%9)*((r%9)+1))/2;
		int j=((l-1)/9)*45;
		int mj=(((l-1)%9)*(((l-1)%9)+1))/2;
		cout<<(k+mk)-(j+mj)<<"\n";
	}
}

Subtask #1
50.0 / 50.0

# 결과 실행 시간 메모리 Grader output
1 Correct 0 ms 344 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 1 ms 348 KB Output is correct
4 Correct 1 ms 516 KB Output is correct
5 Correct 1 ms 344 KB Output is correct