OJ Board

I think that this source is right. But I got WA from online-judge. --;;
[c]
/* @JUDGE_ID: 25429XW 101 C */
#include <stdio.h>
#include <string.h>
#define EMPTY -1
#define SIZE 30

int n;
int blocks[SIZE][SIZE];
int a_i, a_j, b_i, b_j;

void go_init(char);
void MoveOnto(int, int);
void MoveOver(int ...