/in/foo.cc: In function 'int main()':
/in/foo.cc:9:6: warning: this 'for' clause does not guard... [-Wmisleading-indentation]
      for(int j=1;j<=n-i;j++)
      ^~~
/in/foo.cc:11:3: note: ...this statement, but the latter is misleadingly indented as if it is guarded by the 'for'
   for(int j=1;j<=i*2-1;j++)
   ^~~