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답안 #234340

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
234340 2020-05-24T03:28:50 Z super_j6 Trol (COCI19_trol) C++14
50 / 50
 5 ms 384 KB 
#include <iostream>
#include <cstdio>
#include <algorithm>
using namespace std;
#define endl '\n'
#define ll long long
#define pi pair<int, int>
#define f first
#define s second

ll l, r;

ll solve(ll x){
    return x / 9 * 45 + x % 9 * (x % 9 + 1) / 2;
}

void answer(){
    cin >> l >> r;
    
    cout << (solve(r) - solve(l - 1)) << endl;
}

int main(){
	ios::sync_with_stdio(0);
	cin.tie(0);
	
	int t;
	cin >> t;
	
	for(int i = 0; i < t; i++) answer();

	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