cf #446(div2) A

探讨如何判断能否使用两个罐子装下n个罐子里剩余的所有可乐,给出算法实现思路及代码示例。

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A. Greed

time limit per test

2 seconds

memory limit per test

256 megabytes

input

standard input

output

standard output

Jafar has n cans of cola. Each can is described by two integers: remaining volume of cola ai and can's capacity bi (ai  ≤  bi).

Jafar has decided to pour all remaining cola into just 2 cans, determine if he can do this or not!

Input

The first line of the input contains one integer n (2 ≤ n ≤ 100 000) — number of cola cans.

The second line contains n space-separated integers a1, a2, ..., an (0 ≤ ai ≤ 109) — volume of remaining cola in cans.

The third line contains n space-separated integers that b1, b2, ..., bn (ai ≤ bi ≤ 109) — capacities of the cans.

Output

Print "YES" (without quotes) if it is possible to pour all remaining cola in 2 cans. Otherwise print "NO" (without quotes).

You can print each letter in any case (upper or lower).

Examples

Input

Copy

2
3 5
3 6

Output

Copy

YES

Input

Copy

3
6 8 9
6 10 12

Output

Copy

NO

Input

Copy

5
0 0 5 0 0
1 1 8 10 5

Output

Copy

YES

Input

Copy

4
4 1 0 3
5 2 2 3

Output

Copy

YES

Note

In the first sample, there are already 2 cans, so the answer is "YES".

 

题目链接:http://codeforces.com/contest/892/problem/A
题意:有n瓶cola,然后每瓶的体积是ai,容量是bi,问是否能用两个 瓶子将所有的cola装完。

#include<iostream>
#include<cstdio>
#include<algorithm>
#include<cstring>
using namespace std;

typedef long long ll;
const int maxn = 1e6+5;

int a[maxn];

int main()
{
    int n;
    while(~scanf("%d", &n))
    {
        ll sum = 0;
        for(int i = 0; i < n; i++)
        {
            int x;
            cin >> x;
            sum += x;
        }
        for(int i = 0; i < n; i++)
            cin >> a[i];
        sort(a, a+n);
        ll ans = a[n-1] + a[n-2];
        //cout << ans << sum << endl;
        if(ans >= sum)
            puts("YES");
        else
            puts("NO");
    }
    return 0;
 } 
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