Codeforces Round #350 (Div. 2) C. Cinema __ sortings, 思维题,many data

C. Cinema

time limit per test
2 seconds

memory limit per test
256 megabytes

input
standard input

output
standard output

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

3
2 3 2
2
3 2
2 3

output

2

input

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 twoscientists will be very pleased and all the others will be not satisfied.

Source

http://codeforces.com/contest/670/problem/C

My Solution

挺好的题目，一不小心就尝试的两种不合理的做法，而且是本来认为可以但快写好了发现不对(┬＿┬)

最主要应该考虑的应该是从什么映射到什么会比较好，比较容易处理

//!直接对 la[maxn] 用map记录， 相同language 出现的次数， 然后对每个<b, c> 进行比较

#include <iostream>
#include <cstdio>
#include <map>
using namespace std;
const int maxn = 200000 + 8;

int valb[maxn], valc[maxn];

map<int, int> a;

//!直接对 la[maxn] 用map记录， 相同language 出现的次数， 然后对每个<b, c> 进行比较
int main()
{
#ifdef LOCAL
freopen("a.txt", "r", stdin);
#endif // LOCAL

int n, m, val;
scanf("%d", &n);
for(int i = 1; i <= n; i++){
scanf("%d", &val);
a[val]++;
}

scanf("%d", &m);
for(int i = 1; i <= m; i++)
scanf("%d", &valb[i]);
for(int i = 1; i <= m; i++)
scanf("%d", &valc[i]);

int ans = -1, ansx = -1, ansy = -1, x, y;

for(int i = 1; i <= m; i++){
x = a[valb[i]], y = a[valc[i]];
if(x > ansx || (x == ansx && y > ansy)){
ans = i;
ansx = x;
ansy = y;
}
}

printf("%d", ans);

return 0;
}

Thank you!

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