# 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 left = 0;
    int right = strlen(s) - 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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