# 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 i, j;
	for(i=0; s[i]!='\0'; i++);
 
	for(j=0; s[i/2+1]!='\0'; j++){
		if(s[j]!=s[i])return 0;
		i--;
	}
	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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