/in/foo.cc: In function 'int main()':
/in/foo.cc:26:15: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
  for(int i=1;i<=n;i++)scanf("%d",&xx[i]);
              ~^~~
/in/foo.cc:26:40: warning: format '%d' expects argument of type 'int*', but argument 2 has type 'll* {aka long long unsigned int*}' [-Wformat=]
  for(int i=1;i<=n;i++)scanf("%d",&xx[i]);
                                        ^
/in/foo.cc:27:15: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
  for(int i=1;i<=n;i++)scanf("%d",&yy[i]);
              ~^~~
/in/foo.cc:27:40: warning: format '%d' expects argument of type 'int*', but argument 2 has type 'll* {aka long long unsigned int*}' [-Wformat=]
  for(int i=1;i<=n;i++)scanf("%d",&yy[i]);
                                        ^
/in/foo.cc:34:21: warning: format '%d' expects argument of type 'int*', but argument 2 has type 'll* {aka long long unsigned int*}' [-Wformat=]
   scanf("%d%d",&x,&y);
                     ^
/in/foo.cc:34:21: warning: format '%d' expects argument of type 'int*', but argument 3 has type 'll* {aka long long unsigned int*}' [-Wformat=]
/in/foo.cc:37:42: warning: format '%d' expects argument of type 'int', but argument 2 has type 'll {aka long long unsigned int}' [-Wformat=]
   if(yy[n]*x+xx[n]*y>=p2){printf("%d\n",n);continue;}
                                          ^