#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（変更しなくてOK）
int main() {
    char s[100];
    scanf("%s", s);
    printf("%s -> %d\n", s, isPalindrome(s));
    return 0;
}
 

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