/in/foo.cc: In function 'bool hui(int)':
/in/foo.cc:7:13: warning: statement has no effect [-Wunused-value]
    7 |         for(n;j>0;n++)
      |             ^
/in/foo.cc:18:13: warning: statement has no effect [-Wunused-value]
   18 |         for(i;i<n;i++)
      |             ^
/in/foo.cc: In function 'int main()':
/in/foo.cc:39:13: warning: statement has no effect [-Wunused-value]
   39 |         for(m;m<n;m++)
      |             ^