Submission #974603

#	Time	Username	Problem	Language	Result	Execution time	Memory
974603		vjudge1	Trol (COCI19_trol)	C++17	50 / 50	1 ms	348 KiB

trol

#include<bits/stdc++.h>
using namespace std;
#define ull unsigned long long

int main(){
    int q; cin >> q;
    while(q--){
        ull l, r; cin >> l >> r;
        l--;
        cout << (((r/9)*45) + (((r%9) * ((r%9)+1))/2)) - (((l / 9) * 45) + (((l % 9) * ((l % 9) + 1))/2)) << endl;
    }
}

• Subtask 1: 50 / 50