#include <iostream> #include <algorithm> #include <cmath> #define maxn 1000010 using namespace std; int n1[maxn],n2[maxn]; int main() { int l1,l2; cin>>l1>>l2; for(int i=0;i<l1;i++)cin>>n1[i]; for(int i=0;i<l2;i++)cin>>n2[i]; int a,b,c,d; cin>>a>>b; a--;b--; cin>>c>>d; c--;d--; for(int i=0;i<=b-a;i++) { n1[i] = n1[i+a]; } int now = b-a+1; for(int i=c;i<=d;i++) { n1[now++] = n2[i]; } now--; cout<<n1[now/2]<<endl; } // 64 位输出请用 printf("%lld")