Gym_100971_Triangles

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There is a set of n segments with the lengths li. Find a segment with an integer length so that it could form a non-degenerate triangle with any two segments from the set, or tell that such segment doesn't exist.

Input

The first line contains a single integer n (2 ≤ n ≤ 200000) — the number of segments in the set.

The second line contains n integers li separated by spaces (1 ≤ li ≤ 109) — the lengths of the segments in the set.

Output

If the required segment exists, in the first line output «YES» (without quotes). In this case in the second line output a single integer x — the length of the needed segment. If there are many such segments, output any of them.

If the required segment doesn't exist, output «NO» (without quotes).

Example
Input
23 4
Output
YES2
Input
33 4 8
Output
YES6
Input
33 4 9
Output
NO


题意:给你一组数,问你能否找到一个数使这个数和这组数中任意两个数组成三角形。

解:

      在这组数中挑最小的两组确定一个x的范围,再挑最小和最大的数确定一个x的范围,两个范围一交集就能的到x了。

代码:

#include <iostream>#include <cstdio>#include <cstring>#include <algorithm>#include <cstdlib>using namespace std;const int maxn=2e5+5;int a[maxn];int main(){    int n;    while(~scanf("%d",&n))    {        for(int i=0;i<n;i++)        scanf("%d",&a[i]);        sort(a,a+n);        int b,c;        b=a[0]+a[1];        c=a[n-1]-a[0];        if(c+1<b)        printf("YES\n%d\n",c+1);        else        printf("NO\n");    }    return 0;}