#include <iostream>

using namespace std;

int b[10];
int a[10][10];

int main()
{
	a[0][0] = 1; a[0][1] = 2; a[0][2] = 3; a[0][3] = 4;
	a[1][0] = 2; a[1][1] = 3; a[1][2] = 4; a[1][3] = 1;
	a[2][0] = 3; a[2][1] = 4; a[2][2] = 1; a[2][3] = 2;
	a[3][0] = 4; a[3][1] = 1; a[3][2] = 2; a[3][3] = 3;
	a[4][0] = 4; a[4][1] = 3; a[4][2] = 2; a[4][3] = 1;
	a[5][0] = 1; a[5][1] = 4; a[5][2] = 3; a[5][3] = 2;
	a[6][0] = 2; a[6][1] = 1; a[6][2] = 4; a[6][3] = 3;
	a[7][0] = 3; a[7][1] = 2; a[7][2] = 1; a[7][3] = 4;
	for (int i = 0; i < 4; i++)
		cin >> b[i];
	for (int i = 0; i < 8; i++)
	{
		bool ans = true;
		for (int j = 0; j < 4; j++)
			if (a[i][j] != b[j])
				ans = false;
		if (ans)
		{
			cout << "true" << endl;
			return 0;
		}
	}
	cout << "false" << endl;
}