# include <stdio.h>
 
int isPalindrome(char s[]){
    int i,t,num;
    for(i=0;s[i]!='\0';i++){
        ;
    }
    num=i-1;
    for(t=0;s[t]!='\0';t++){
     if(--i>=0&&t<=num){
        // printf("%d,%d\n",i,t);
      if(s[i]!=s[t]){
         return 0;
      }
     }
    }
    return s[t]=='\0'; //真なら1,偽なら０
 
	//回文になっているとき１を返す
	//回文になっていないとき０を返す
}
//girafarig
 
//メイン関数は書き換えなくてよいです
int main(){
    char s[100];
    scanf("%s",s);
    printf("%s -> %d\n",s,isPalindrome(s));
    return 0;
}
 

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girafarig