C :

#include<stdio.h>
int main()
{
	char a,b;
	while(scanf("%c %c",&a,&b)!=EOF)
	{
		if(a=='J'&&b=='B')
			printf("heihei\n");
		else if(a=='C'&&b=='B')
			printf("baibai\n");
        else if(a=='B'&&b=='J')
			printf("baibai\n");
         else if(a=='B'&&b=='C')
			printf("heihei\n");
         else if(a=='J'&&b=='C')
			printf("baibai\n");
        else if(a=='C'&&b=='J')
			printf("heihei\n");
		else
			printf("again\n");
		getchar();
	}
	return 0;
}

C++ :

#include <cstdio>
#include <iostream>
using namespace std ;
char h,b ;

int judge(char a,char b)
{
    if(a == 'J')
    {
        if(b == 'B')
            return 1 ;
        else return 0 ;
    }
    else if(a == 'B')
    {
        if(b =='C')
            return 1 ;
        else return 0 ;
    }
    else if(a == 'C')
    {
        if(b == 'J')
            return 1 ;
        else return 0 ;
    }
}

int main()
{
    while(scanf("%c %c",&h,&b)!=EOF)
    {
        getchar() ;
        if(h == b)
        {
            printf("again\n") ;
            continue ;
        }
        else if(judge(h,b))
        {
            printf("heihei\n") ;
        }
        else if(!judge(h,b))
        {
            printf("baibai\n") ;
        }

    }
    return 0 ;
}