Codeforces Round #450 (Div. 2) C. Remove Extra One【*模拟链表/一个数比前面所有数大就是个record。删掉一个数,让record的个数尽量多。】

C. Remove Extra One
time limit per test
2 seconds
memory limit per test
256 megabytes
input
standard input
output
standard output

You are given a permutation p of length n. Remove one element from permutation to make the number of records the maximum possible.

We remind that in a sequence of numbers a1, a2, ..., ak the element ai is a record if for every integer j (1 ≤ j < i) the following holds:aj < ai.

Input

The first line contains the only integer n (1 ≤ n ≤ 105) — the length of the permutation.

The second line contains n integers p1, p2, ..., pn (1 ≤ pi ≤ n) — the permutation. All the integers are distinct.

Output

Print the only integer — the element that should be removed to make the number of records the maximum possible. If there are multiple such elements, print the smallest one.

Examples
input
1
1
output
1
input
5
5 1 2 3 4
output
5
Note

In the first example the only element can be removed.

 【代码】:

#include<bits/stdc++.h>
using namespace std;
const int N=1e5+5;
int mx,mx2,n,mn=-1e9,res;
int a[N];
int main()
{
    scanf("%d",&n);
    for(int i=0;i<n;i++)
    {
        int x;
        scanf("%d",&x);
        if(x>mx)
        {
            mx2=mx;
            mx=max(mx,x);
            a[x]--;
        }
        else if(x>mx2)
        {
            a[mx]++;
            mx2=max(mx2,x);
        }
    }
    for(int i=1;i<=n;i++)
    {
        if(a[i]>mn)
        {
            mn=a[i];
            res=i;
        }
    }
    cout<<res<<endl;
    return 0;
}
View Code
原文地址:https://www.cnblogs.com/Roni-i/p/8026518.html