Cinema codeforces 670C

Moscow is hosting a major international conference, which is attended by n scientists from different countries. Each of the scientists knows exactly one language. For convenience, we enumerate all languages of the world with integers from 1 to 109.

In the evening after the conference, all n scientists decided to go to the cinema. There are m movies in the cinema they came to. Each of the movies is characterized by two distinct numbers — the index of audio language and the index of subtitles language. The scientist, who came to the movie, will be very pleased if he knows the audio language of the movie, will be almost satisfied if he knows the language of subtitles and will be not satisfied if he does not know neither one nor the other (note that the audio language and the subtitles language for each movie are always different). 

Scientists decided to go together to the same movie. You have to help them choose the movie, such that the number of very pleased scientists is maximum possible. If there are several such movies, select among them one that will maximize the number of almost satisfied scientists.

Input

The first line of the input contains a positive integer n (1 ≤ n ≤ 200 000) — the number of scientists.

The second line contains n positive integers a1, a2, ..., an (1 ≤ ai ≤ 109), where ai is the index of a language, which the i-th scientist knows.

The third line contains a positive integer m (1 ≤ m ≤ 200 000) — the number of movies in the cinema. 

The fourth line contains m positive integers b1, b2, ..., bm (1 ≤ bj ≤ 109), where bj is the index of the audio language of the j-th movie.

The fifth line contains m positive integers c1, c2, ..., cm (1 ≤ cj ≤ 109), where cj is the index of subtitles language of the j-th movie.

It is guaranteed that audio languages and subtitles language are different for each movie, that is bj ≠ cj

Output

Print the single integer — the index of a movie to which scientists should go. After viewing this movie the number of very pleased scientists should be maximum possible. If in the cinema there are several such movies, you need to choose among them one, after viewing which there will be the maximum possible number of almost satisfied scientists. 

If there are several possible answers print any of them.

Examples
input
Copy
3
2 3 2
2
3 2
2 3
output
2
input
Copy
6
6 3 1 1 3 7
5
1 2 3 4 5
2 3 4 5 1
output
1
Note

In the first sample, scientists must go to the movie with the index 2, as in such case the 1-th and the 3-rd scientists will be very pleased and the 2-nd scientist will be almost satisfied.

In the second test case scientists can go either to the movie with the index 1 or the index 3. After viewing any of these movies exactly two scientists will be very pleased and all the others will be not satisfied.

/*
   這道題可以用離散化來做, 但是仔細分析一下其實也不需要
   我們需要遍歷每一部電影, 計算有多少人會pleased, 有多少人對satisfied, 然後選出最優電影.
   我們將每個scientist會的語言放入到person數組, 將每部電影的音屏和字幕放入audio, subtitle數組.
   如何計算每部電影的pleased和satisfied呢?
   我們只需要計算這個語言在person數組中出現的個數即可.
   而將person數組排序後, 利用upper_bound和lower_bound即可快速在log(n)的時間中求出來
*/
#include <iostream>
#include <algorithm>
#include <unordered_set>
#include <unordered_map>
#include <vector>
#include <cstdlib>
#include <cstdio>
#include <cmath>
using namespace std;
const int MAXN = 1e6;
int subtitle[MAXN], audio[MAXN], person[MAXN];
int n, m;
int main(){
    scanf("%d", &n);
    for(int i = 0; i < n; ++i){
        scanf("%d", person + i);
    }
    sort(person, person + n);
    scanf("%d", &m);
    for(int i = 0; i < m; ++i){
        scanf("%d", audio + i);
    }
    for(int i = 0; i < m; ++i){
        scanf("%d", subtitle + i);
    }
    int pleased = -1, satisfied = -1, bestMovie = -1;
    for(int i = 0; i < m; ++i){// 總體算法的時間複雜度爲 n*log(n)
        // 常數可能比較大, 但卻是妥妥的log(n)級
        int curPleased = upper_bound(person, person + n, audio[i]) - lower_bound(person, person + n, audio[i]);
        int curSatisfied = upper_bound(person, person + n, subtitle[i]) - lower_bound(person, person + n, subtitle[i]);
        if(curPleased > pleased){
            bestMovie = i + 1;
            pleased = curPleased;
            satisfied = curSatisfied;
        }
        else if(curPleased == pleased){
            if(curSatisfied > satisfied){
                bestMovie = i + 1;
                pleased = curPleased;
                satisfied = curSatisfied;
            }
        }
    }
    printf("%d\n", bestMovie);
    return 0;
}

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