Submission #491237

#	Time	Username	Problem	Language	Result	Execution time	Memory
491237		Nimbostratus	Trol (COCI19_trol)	C++17	50 / 50	1 ms	204 KiB

trol

#include "bits/stdc++.h"
#define endl '\n'
const int maxn = 2e5 + 5;
const int inf = 2e9;
const int mod = 1e9 + 7;
using namespace std;
using lint = long long;
using pii = pair<int,int>;

int t;
lint l, r;

lint ans(lint x) {
	lint ret = x / 9 * 45;
	for(; x % 9; x--)
		ret += x % 9;
	return ret;
}

signed main() {
	#ifdef Local
	freopen("in.txt", "r", stdin);
	freopen("out.txt", "w", stdout);
	#endif
	ios_base::sync_with_stdio(false);
	cin.tie(nullptr);
	cin >> t;
	while(t--) {
		cin >> l >> r;
		cout << ans(r) - ans(l - 1) << endl;
	}

}

• Subtask 1: 50 / 50