Submission #974148

#	Time	Username	Problem	Language	Result	Execution time	Memory
974148		vjudge1	Trol (COCI19_trol)	C++17	50 / 50	1 ms	452 KiB

trol

#include <bits/stdc++.h>
using namespace std;
#define ll long long
#define pb push_back
#define pii pair<int, int>
#define pll pair<ll, ll>
#define fastio ios::sync_with_stdio(0), cin.tie(0), cout.tie(0);
#define fi first
#define se second

ll q, l, r;

int main() {
	fastio;	
    cin >> q;
    while (q--) {
    	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