#include <iostream>
#include <string>
#include <algorithm>
using namespace std;

int main() {
	int n;
	cin >> n;
	int ost = 0, p = 1, check = 0;
	bool b = 0;
	while (p * 10 <= n) {
		p *= 10;
	}
	do {
		ost = n / p;
		if (ost == 3 && check == 3) {
			b = 1;
		}
		check = 0;
		if (ost == 3) {
			check = ost;
		}
		n %= p;
		p /= 10;
	} while (p);
	if (b) {
		cout << "YES";
	} else {
		cout << "NO";
	}
}