Submission #1037525

#	Time	Username	Problem	Language	Result	Execution time	Memory
1037525		thinknoexit	Toy Train (IOI17_train)	C++17	5 / 100	4 ms	1372 KiB

train

#include "train.h"
#include <bits/stdc++.h>
using namespace std;
using ll = long long;
const int N = 5050;
vector<int> adj[N];
int n, m;
vector<int> who_wins(vector<int> a, vector<int> r, vector<int>  _U, vector<int> _V) {
	n = a.size();
	m = _U.size();
	for (int i = 0;i < m;i++) {
		adj[_U[i]].push_back(_V[i]);
	}
	vector<int> ans(n);
	ans[n - 1] = r[n - 1];
	for (int i = n - 2;i >= 0;i--) {
		if (a[i] == 0) { // Borzou
			bool ch = 0;
			for (auto& x : adj[i]) {
				if (x == i && !r[i]) ch = 1;
				else if (x != i && !ans[x]) ch = 1;
			}
			ans[i] = ch ^ 1;
		}
		else { // Arezou
			bool ch = 0;
			for (auto& x : adj[i]) {
				if (x == i && r[i]) ch = 1;
				else if (x != i && ans[x]) ch = 1;
			}
			ans[i] = ch;
		}
	}
	return ans;
}
/*
4 5
1 0 1 1
0 0 0 1
0 1
1 1
1 2
2 3
3 3
*/

• Subtask 1: 5 / 5
• Subtask 2: 0 / 10
• Subtask 3: 0 / 11
• Subtask 4: 0 / 11
• Subtask 5: 0 / 12
• Subtask 6: 0 / 51