제출 #1130571

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
1130571		kirakosyan	Trains (BOI24_trains)	C++20	8 / 100	1071 ms	1114112 KiB

Main

#include<iostream>
#include<vector>
#include<algorithm>
#include<cmath>
#include<queue>
#include<map>
using namespace std;
using ll = long long;

ll gcd(ll a, ll b)
{
	return b ? gcd(b, a % b) : a;
}

void solve() {
	ll n; cin >> n;
	vector<vector<ll>>gp(n);
	for (ll i = 0; i < n; i++) {
		ll d, x; cin >> d >> x;
		if (d == 0)continue;
		for (ll j = 1; j <= x; j++) {
			if (i + j * d < n) {
				gp[i].push_back(i + j * d);
			}
			else break;
		}
	}
	ll ans = 0;
	vector<ll>dp(n);
	dp[0] = 1;
	for (ll i = 0; i < n; i++) {
		for (ll x : gp[i]) {
			dp[x] += dp[i];
		}
		ans += dp[i];
	}
	cout << ans << endl;



}

signed main()
{
	ios_base::sync_with_stdio(0);
	cin.tie(0);
	//signed _; cin >> _; while (_--)
	solve();
}

• Subtask 1: 8 / 8
• Subtask 2: 0 / 13
• Subtask 3: 0 / 16
• Subtask 4: 0 / 34
• Subtask 5: 0 / 29