//課題３
# include <stdio.h>
 
int isPalindrome(char s[]){
int i,h_counts,counts;
for(i=0;s[i]!='\0';i++){
	;
}
counts=i;
h_counts=i-1;
if(counts%2==0){
	for(i=0;s[i]==s[h_counts-i];i++){
		if(i==h_counts/2)return 1;
	}
}else if(counts%2==1){
		for(i=0;s[i]==s[h_counts-i];i++){
		if(i==counts/2)return 1;
}
}
return 0;
 
}
 
//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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