A - Kefa and First Steps
Problem description
Kefa decided to make some money doing business on the Internet for exactly n days. He knows that on the i-th day (1 ≤ i ≤ n) he makes ai money. Kefa loves progress, that's why he wants to know the length of the maximum non-decreasing subsegment in sequence ai. Let us remind you that the subsegment of the sequence is its continuous fragment. A subsegment of numbers is called non-decreasing if all numbers in it follow in the non-decreasing order.
Help Kefa cope with this task!
Input
The first line contains integer n (1 ≤ n ≤ 105).
The second line contains n integers a1, a2, ..., an (1 ≤ ai ≤ 109).
Output
Print a single integer — the length of the maximum non-decreasing subsegment of sequence a.
Examples
Input
6
2 2 1 3 4 1
Output
3
Input
3
2 2 9
Output
3
Note
In the first test the maximum non-decreasing subsegment is the numbers from the third to the fifth one.
In the second test the maximum non-decreasing subsegment is the numbers from the first to the third one.
解题思路:求最大非递减序列的长度,注意maxlen初始值为1,水过!
AC代码:
#include<bits/stdc++.h>
using namespace std;
int n,len=,maxlen=,a[];
int main(){
cin>>n;
for(int i=;i<n;++i)cin>>a[i];
for(int i=;i<n;++i){
if(a[i]>=a[i-])len++;
else len=;
maxlen=max(maxlen,len);
}
cout<<maxlen<<endl;
return ;
}
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