# 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 len=0;
	int i,j;
	while (s[len] !='\0') {
        len++;
    }
    i=0;
    j=len-1;
    while(i<j){
    	if(s[i] !=s[j]){
    		return 0;
    	}
    	i++;
    	j--;
    }
    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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