foo.cc: In function 'int main()':
foo.cc:47:10: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   47 |     scanf("%d %d",&n,&m);
      |     ~~~~~^~~~~~~~~~~~~~~
foo.cc:50:18: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   50 |             scanf("%d",&Map[i][j]);
      |             ~~~~~^~~~~~~~~~~~~~~~~
foo.cc:51:10: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   51 |     scanf("%d %d %d %d",&_begin.x,&_begin.y,&_end.x,&_end.y);
      |     ~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

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Found 2 testcases.
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