#include <stdio.h>


int isPalindrome(char s[]) {
    int len = 0;
    
    
    while (s[len] != '\0') {
        len++;
    }

    int start = 0;       
    int end = len - 1;    

    
    while (start < end) {
        if (s[start] != s[end]) {
            return 0;
        }
        start++;
        end--;
    }

    return 1; 
}

int main(void) {
   
    printf("shinbunshi: %d\n", isPalindrome("shinbunshi")); 
    printf("repaper: %d\n", isPalindrome("repaper"));      
    printf("girafarig: %d\n", isPalindrome("girafarig"));  

    return 0;
}