# include <stdio.h>
 
int isPalindrome(char s[]){
    int left = 0;
    int right = 0;
    while (s[right] != '\0') {
    right++;
    }
    right--; 
    while (left < right) {
        if (s[left] != s[right]) {
            return 0;  
        }
        left++;
        right--;
    }
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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