/in/foo.cc: In function 'int main()':
/in/foo.cc:19:3: warning: this 'for' clause does not guard... [-Wmisleading-indentation]
   for(int b=n-1;b>=a1;--b)
   ^~~
/in/foo.cc:21:4: note: ...this statement, but the latter is misleadingly indented as if it is guarded by the 'for'
    cout << ".";
    ^~~~
/in/foo.cc:24:3: warning: this 'if' clause does not guard... [-Wmisleading-indentation]
   if(a1!=1)
   ^~
/in/foo.cc:26:4: note: ...this statement, but the latter is misleadingly indented as if it is guarded by the 'if'
    cout << endl;
    ^~~~