#include <stdio.h>
 
int isPalindrome(char s[]){
    int length = 0;
 
    // 文字列の長さを自分で数える
    while (s[length] != '\0') {
        length++;
    }
 
    int left = 0;
    int right = length - 1;
 
    while (left < right) {
        if (s[left] != s[right]) {
            return 0; // 回文ではない
        }
        left++;
        right--;
    }
 
    return 1; // 回文
}
 
// メイン関数（そのままでOK）
int main(){
    char s[100];
    scanf("%s",s);
    printf("%s -> %d\n",s,isPalindrome(s));
    return 0;
}
 
 

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