#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;
}