Submission #977094

#	Time	Username	Problem	Language	Result	Execution time	Memory
977094		vjudge1	Trol (COCI19_trol)	C++17	50 / 50	1 ms	348 KiB

trol

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

ll bil (ll n){
    ll ret= (n/9)* 45;
    for (int i=1; i<=n%9; i++) ret+=i;
    return ret;
}

int main(){
    int q;
    cin >> q;
    for (int i=0; i<q; i++){
        ll l, r;
        cin >> l >> r;
        cout << bil(r) - bil(l-1) << endl;
    }
    
    return 0;
}

• Subtask 1: 50 / 50