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답안 #975137

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
975137 2024-05-04T13:28:26 Z vjudge1 Trol (COCI19_trol) C++17
50 / 50
 1 ms 600 KB 
#include <bits/stdc++.h>
#define ll long long

using namespace std;


int main(){
    int q; cin >> q;

    while(q--){
        ll l, r; cin >> l >> r;

        ll ansR = 0;
        ansR += (r/9) * 45;
        for(int i = 1; i <= r % 9; i++){
            ansR += i;
        }

        ll ansL = 0;
        ansL += ((l-1)/9) * 45;
        for(int i = 1; i <= (l-1) % 9; i++){
            ansL += i;
        }

        cout << ansR - ansL << endl;
    }
}

Subtask #1
50.0 / 50.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 600 KB Output is correct
2 Correct 1 ms 344 KB Output is correct
3 Correct 1 ms 596 KB Output is correct
4 Correct 1 ms 344 KB Output is correct
5 Correct 1 ms 600 KB Output is correct