/in/foo.cc: In function 'int main()':
/in/foo.cc:13:19: warning: this 'for' clause does not guard... [-Wmisleading-indentation]
 #define fo(i,a,b) for(R int (i)=(a);(i)<=(b);++(i))
                   ^
/in/foo.cc:108:5: note: in expansion of macro 'fo'
     fo(i,1,m)cout<<a[i]<<" ";cout<<endl;
     ^~
/in/foo.cc:108:30: note: ...this statement, but the latter is misleadingly indented as if it were guarded by the 'for'
     fo(i,1,m)cout<<a[i]<<" ";cout<<endl;
                              ^~~~