// editor5
#include<stdio.h>
int main(){
    char name[20];
    scanf("%s",name);
    if(name[0] == "R" && name[1] == "e" && name[2] == "d" && name[3] == "\0"){
        printf("Stop");
    }else if (name[0] == "Y" && name[1]  == "e" && name[2] == "l" && name[3] == "l" && name[4] == "o" && name[5] == "w" && name[6] =="\0"){
        printf("Ready");
    }else if (name[0] == "G" && name[1] == "r" && name[2] == "e" && name[3] == "e" && name[4] == "n" && name[5] ==\0 ){
        printf("Go");
    }else{
        printf("Invalid input");
    }
    return 0;
}