#include<bits/stdc++.h>
using namespace std;
mt19937 mt(time(NULL));
constexpr int M=(1<<20)+5;
int n,lim,limit,a[M],id[M];
int read(){
	int x=0;char ch=getchar();
	while (!isdigit(ch)) ch=getchar();
	while (isdigit(ch)) x=x*10+ch-48,ch=getchar();
	return x; 
}
int main(){ n=read();lim=1<<n;
	for (int i=0;i<lim;i++) a[i]=read();
	auto solve=[&](auto x,auto y)->void {
		if (a[x]+a[y]<a[x&y]+a[x|y]){
			printf("%d %d\n",x,y);exit(0);
		}
	};
	for (int i=0;i<lim;i++)
		for (int j=1;j<lim;j<<=1){
			solve(i,j),solve(i,i^j);
	iota(id,id+lim,0);
	sort(id,id+lim,[&](int x,int y){return a[x]<a[y];});
	for (int i=0;i<lim&&i<2048;i++){
		if (i<16) limit=lim;
		else limit=min(2048,lim);
		for (int j=i+1;j<limit;j++)
			solve(id[i],id[j]);
		}
	reverse(id,id+lim);
	for (int i=0;i<lim&&i<2048;i++){
		if (i<16) limit=lim;
		else limit=min(2048,lim);
		for (int j=i+1;j<limit;j++)
			solve(id[i],id[j]);
		}
	int T=2048*2048;
	while (T--) solve(mt()%lim,mt()%lim);
	return puts("-1"),0;
}

answer.code: In function ‘int main()’:
answer.code:40:2: error: expected ‘}’ at end of input
   40 | }
      |  ^
answer.code:12:11: note: to match this ‘{’
   12 | int main(){ n=read();lim=1<<n;
      |           ^
answer.code: In instantiation of ‘main()::<lambda(auto:65, auto:66)> [with auto:65 = long unsigned int; auto:66 = long unsigned int]’:
answer.code:38:19:   required from here
answer.code:16:34: warning: format ‘%d’ expects argument of type ‘int’, but argument 2 has type ‘long unsigned int’ [-Wformat=]
   16 |                         printf("%d %d\n",x,y);exit(0);
      |                                 ~^       ~
      |                                  |       |
      |                                  int     long unsigned int
      |                                 %ld
answer.code:16:37: warning: format ‘%d’ expects argument of type ‘int’, but argument 3 has type ‘long unsigned int’ [-Wformat=]
   16 |                         printf("%d %d\n",x,y);exit(0);
      |                                    ~^      ~
      |                                     |      |
      |                                     int    long unsigned int
      |                                    %ld