foo.cc: In function 'int main()':
foo.cc:32:7: warning: this 'for' clause does not guard... [-Wmisleading-indentation]
   32 |       for (int j=2;j<m;j++)
      |       ^~~
foo.cc:36:2: note: ...this statement, but the latter is misleadingly indented as if it were guarded by the 'for'
   36 |  for (double i=1.5;i<n;i++)
      |  ^~~
foo.cc:28:7: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   28 |  scanf("%d%d",&n,&m);
      |  ~~~~~^~~~~~~~~~~~~~
foo.cc:30:32: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   30 |    for (int j=1;j<=m;j++) scanf("%d",&a[i][j]);
      |                           ~~~~~^~~~~~~~~~~~~~~

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