Submission #976029

#	Time	Username	Problem	Language	Result	Execution time	Memory
976029		vjudge1	Trol (COCI19_trol)	C++17	50 / 50	1 ms	348 KiB

trol

#include <bits/stdc++.h>
using namespace std;

int main(){
    long long n;
    cin >> n;
    long long l, r;
    for(int i = 0;  i < n; i++){
        cin >> l >> r;
        
        long long ans1 = 0, ans2 = 0;
        ans1 = (r / 9) * 45;
        for(int j = 1; j <= r % 9; j++){
            ans1 += j;
        }ans2 = ((l - 1) / 9) * 45;
        for(int j = 1; j <= (l - 1) % 9; j++){
            ans2 += j;
        }cout << ans1 - ans2 << endl;
    }
}

• Subtask 1: 50 / 50