#define _CRT_SECURE_NO_WARNINGS
#include <iostream>
#include <string>
using namespace std;

int main() {
	string c, c1;
	string res = "There is no result";
	for (long i = 1; i <= 3; i++)
	{
		cin >> c;
		c1 = "";
		for (long j = c.length()-1; j >= 0; j--)
		{
			c1 = c1 + c[j];
		}
		if (c == c1) res = "S" + to_string(i);
	}
	cout << res;
	return 0;
}