1140.cpp

#include <stdio.h>
#include <string.h>

int main(){
    char comp;
    char line[1200];
    char * pch;
    int flag;
    while(gets(line)){
           if(line[0] == '*') break;
           flag = 0;
           comp = 32;
           pch = strtok (line," ");
           while (pch != NULL)
           {
           if(comp == 32) comp = pch[0];
           else{
                if(pch[0] >= 65 && pch[0] <= 90){
                        if(comp == pch[0] || comp == pch[0] + 32){
                                flag = 0;
                        }
                        else flag = 1;
                }else{
                      if(comp == pch[0] || comp == pch[0] - 32){
                                flag = 0;
                      }
                      else flag = 1;
                }
           }
           if(flag == 1) break;
           pch = strtok (NULL, " ");
           }
           if(flag == 1) printf("N\n");
           else printf("Y\n");
    }
    
    return 0;
}