# include <stdio.h>
 
int myStrlen(char s[]){
	int i=0;
	while(s[i]!='\0'){
		i++;
	}
	return i;
}
 
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,len=myStrlen(s);
	for(i=0;i<len/2;i++){
		if(s[i]!=s[len-1-i]) return 0;
	}
 
	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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