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답안 #975591

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
975591 2024-05-05T14:08:44 Z vjudge1 Trol (COCI19_trol) C++17
50 / 50
 1 ms 348 KB 
#include <bits/stdc++.h>
using namespace std;
#define int long long

int q, l, r;

int calc(int x){
    int ans = (x/9)*45;
    for(int i = 1; i<=x%9; i++){
        ans += i;
    }
    return ans;
}

signed main(){
    cin >> q;
    while(q--){
        cin >> l >> r;
        cout << calc(r) - calc(l - 1) << endl;
    }
}

Subtask #1
50.0 / 50.0

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