foo.cc: In function 'int main()':
foo.cc:76:11: warning: statement has no effect [-Wunused-value]
   76 |     for ( p1;p1<a1+n1;p1++)  {cin>>*p1;}
      |           ^~
foo.cc:78:11: warning: statement has no effect [-Wunused-value]
   78 |     for ( p2;p2<a2+n2;p2++)  {cin>>*p2;}
      |           ^~

[Hydro](https://hydro.ac)提供评测服务