Submission #976062

#	Time	Username	Problem	Language	Result	Execution time	Memory
976062		vjudge1	Trol (COCI19_trol)	C++17	50 / 50	1 ms	348 KiB

trol

#include <bits/stdc++.h>
#define int long long
#define f first
#define s second
#define pb push_back
#define endl '\n'
using namespace std;

int l,r;

void solve() {
	cin >> l >> r;
	l--;
	l = (45 * (l / 9)) + ((l % 9) * ((l % 9) + 1)) / 2;
	r = (45 * (r / 9)) + ((r % 9) * ((r % 9) + 1)) / 2;
	cout << r - l << endl;
}

int32_t main() {
	ios_base::sync_with_stdio(0); cin.tie(0);
	int tttt = 1;
	cin >> tttt;
	while (tttt--) solve();
}

• Subtask 1: 50 / 50