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#include <stdio.h>
#include <stdlib.h>
char *serial = "\x31\x3e\x3d\x26\x31";
int check(char *ptr)
{
int i;
int hash = 0xABCD;
for (i = 0; ptr[i]; i++)
hash += ptr[i] ^ serial[i % 5];
return hash;
}
int main(int ac, char **av)
{
int ret;
if (ac != 2)
return -1;
ret = check(av[1]);
if (ret == 0xad6d)
printf("Win\n");
else
printf("fail\n");
return 0;
}