/in/foo.cc: In function 'int main()':
/in/foo.cc:16:26: warning: format '%d' expects argument of type 'int*', but argument 2 has type 'LL* {aka long long int*}' [-Wformat=]
         scanf("%d", &a[i]);
                          ^
/in/foo.cc:21:26: warning: format '%d' expects argument of type 'int*', but argument 2 has type 'LL* {aka long long int*}' [-Wformat=]
         scanf("%d", &b[i]);
                          ^