foo.cc: In function ‘int judge(int (*)[500], int, int)’:
foo.cc:47:95: warning: array subscript -1 is below array bounds of ‘int [500]’ [-Warray-bounds=]
   47 |                 if(a[i][j]>a[i-1][j]&&a[i][j]>a[i][j+1]&&a[i][j]>a[i+1][j]&&a[i][j]>a[i-1][j-1]&&a[i][j]>a[i-1][j+1])
      |                                                                                     ~~~~~~~~~~^