I think that the judge for this problem has a bug.
A big number of my friends submit the following code which is obviously deserve to get WA but it got AC.
code(in C++):
main(){}
code (in C) (Is this code able to avoid compile error?)
#include<stdio.h>
#include<stdlib.h>
int main()
{
freopen(stdin,"r.txt","r");
return 0;
}

