C. Remove Extra One
time limit per test
2 secondsmemory limit per test
256 megabytesinput
standard inputoutput
standard outputYou 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; }