OJ Board

can you give me some samples,i can't open *.tgz

I get WA and don't know why?
Here's my code:
#include <iostream>
#include <cstdio>
using namespace std;
#define down -1
#define up 1
int stat[20];
int n=1;

void correct(int *a)
{
if(*a>=n) *a-=n;
if(*a<0) *a+=n;
}

int counter(int start,int interval,int type)
{
int pos=start;
for(int count=0 ...