/in/foo.cc: In function 'int main()':
/in/foo.cc:34:26: warning: format '%d' expects argument of type 'int*', but argument 2 has type 'long long int*' [-Wformat=]
          scanf("%d",&a[i]);
                          ^
/in/foo.cc:40:26: warning: format '%d' expects argument of type 'int*', but argument 2 has type 'long long int*' [-Wformat=]
          scanf("%d",&b[i]);
                          ^
/in/foo.cc:37:17: warning: unused variable 'qwe' [-Wunused-variable]
       long long qwe=maxa();  
                 ^~~