/in/foo.cc: In function 'int main()':
/in/foo.cc:13:2: warning: this 'for' clause does not guard... [-Wmisleading-indentation]
  for(int i=1;i<=maxs;i++)
  ^~~
/in/foo.cc:22:4: note: ...this statement, but the latter is misleadingly indented as if it is guarded by the 'for'
    cout<<fenzi<<" "<<fenmu<<endl;
    ^~~~