# include <stdio.h>
 
int isPalindrome(char s[]){
	//関数の中だけを書き換えてください
	//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
	int i = 0;
	int j = 0;
 
	while (s[j] != '\0'){
		j++;
	}
	j--;
 
	while (i < j){
		if (s[i] != s[j]){
			return 0;
		}
		i++;
		j--;
	}
 
	return 1;
}
 
//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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