# 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 length;
 
    while (s[length] != '\0') {
        length++;
    }
    for (int i = 0; i < length / 2; i++) {
        if (s[i] != s[length - 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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