Submission #259049

#	Time	Username	Problem	Language	Result	Execution time	Memory
259049		lani1akea	Trol (COCI19_trol)	C++17	10 / 50	1095 ms	384 KiB

trol

#include <bits/stdc++.h>

#define F first
#define S second
#define ll long long
#define pb push_back
#define endl '\n'

using namespace std;

const int MOD = 1e9 + 7;
const int N = 510;

int e(ll x) {
	string s = to_string(x);
	ll sum = 0;
	for (char c: s)
		sum += c - '0';

	if(sum > 9)
		return e(sum);

	return sum;
}
int main() {
	ios_base::sync_with_stdio(0);
	cin.tie(0); cout.tie(0);
	int T;
	cin >> T;
	while(T--) {
		ll a, b;
		cin >> a >> b;
		int x = e(a);
		ll ans = 0;
		for (ll i = a; i <= b; ++i) {
			if (i % 10 == 0) {
				x = e(i);
				ans += x;
				x++;
			} else {
				ans += x;
				x++;
			}
		}
		cout << ans << endl;
	}
}

• Subtask 1: 10 / 50