Submission #1755435

---

Source Code Expand

#include <iostream>
#include <string>
#include <algorithm>
#include <map>
#include <cmath>
#define	MOD  1000000007;
#define PI = 3.14159265358979323846;
using namespace std;

int main()
{
	int N, a, b, K;
	cin >> N;
	cin >> a >> b;
	cin >> K;
	int P[100];
	map<int, int>mp;
	if (K > N)
	{
		cout << "NO" << endl;
		return 0;
	}
	for (int i = 0; i < K; i++)
	{
		cin >> P[i];
		mp[P[i]]++;
		if (mp[P[i]] > 1 || P[i] == a || P[i] == b)
		{
			cout << "NO" << endl;
			return 0;
		}
	}
	cout << "YES" << endl;
}

Submission Info

Judge Result