#include <iostream>
#include <cstring>
#include <ctype.h>
using namespace std;

int main() {
    char s[1000];
    cin >> s;
    
    char s2[1000];
    cin >> s2;
    
    if(strcmp(s, s2) == 0) {
        cout << "ISTI" << endl;
    }
    else {
        cout << "RAZLICNI" << endl;
    }
    
  return 0;
}