# include <stdio.h>
 
int isPalindrome(char s[]){
	    int left = 0;                // 先頭の位置
    int right = strlen(s) - 1;   // 末尾の位置
 
    while (left < right) {
        // 左右の文字を比較し、違えば即座に 0 を返す
        if (s[left] != s[right]) {
            return 0;
        }
        left++;  // 右へ進む
        right--; // 左へ進む
    }
    // すべて一致すれば 1 を返す
    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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