CodeForces 670C Cinema

#pragma comment(linker, "/STACK:1024000000,1024000000")
#include<cstdio>
#include<cstring>
#include<cmath>
#include<algorithm>
#include<vector>
#include<map>
#include<set>
#include<queue>
#include<stack>
#include<iostream>
using namespace std;
typedef long long LL;
const double pi=acos(-1.0),eps=1e-6;
void File()
{
freopen("D:\\in.txt","r",stdin);
freopen("D:\\out.txt","w",stdout);
}
template <class T>
inline void read(T &x)
{
char c=getchar(); x=0;
while(!isdigit(c)) c=getchar();
while(isdigit(c)) {x=x*10+c-'0'; c=getchar();}
}

const int maxn=200010;
int a[maxn],b[maxn],c[maxn],n,q;
map<int,int>m;

int main()
{
scanf("%d",&n);
for(int i=1;i<=n;i++) {int x; scanf("%d",&x),m[x]++; }
scanf("%d",&q);
for(int i=1;i<=q;i++) scanf("%d",&b[i]);
for(int i=1;i<=q;i++) scanf("%d",&c[i]);
for(int i=1;i<=q;i++) b[i]=m[b[i]],c[i]=m[c[i]];

int mx=0;
for(int i=1;i<=q;i++) mx=max(mx,b[i]);
int ans=0;
for(int i=1;i<=q;i++)
{
if(b[i]!=mx) continue;
if(c[i]<c[ans]) continue;
ans=i;
}
printf("%d\n",ans);
return 0;
}