chengluyu

#include <iostream>

using namespace std;

int main(int argc, char const *argv[])
{
  const int MAX = 102;
  const int STEP[4][2] = {{0, -1}, {-1, 0}, {0, 1}, {1, 0}};
  int matrix[MAX][MAX] = {0};
  int n, x, y, s = 0, sum = 0;

chengluyu

#include <iostream>
#include <cstdio>
 
using namespace std;
 
#define CONCAT(a, b) a##b
 
#define file_type CONCAT(FI, LE)
#define file_open CONCAT(fo, pen)
#define file_scanf CONCAT(fs, canf)

chengluyu

#include <iostream>
#include <cstdio>

using namespace std;

#define CONCAT(a, b) a##b

#define file_type CONCAT(FI, LE)
#define file_open CONCAT(fo, pen)
#define file_scanf CONCAT(fs, canf)