foo.cc: In function 'int main()':
foo.cc:11:17: warning: this 'for' clause does not guard... [-Wmisleading-indentation]
   11 |                 for(j=0;j<n;j++)
      |                 ^~~
foo.cc:13:25: note: ...this statement, but the latter is misleadingly indented as if it were guarded by the 'for'
   13 |                         a[i][0]=1;
      |                         ^

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