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  • codeforces 580A Kefa and First Steps

    A. Kefa and First Steps

     
     

    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.

    Sample test(s)
    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.

     1 #include<cstdio>
     2 #include<cstring>
     3 #include<algorithm>
     4 using namespace std;
     5 int main()
     6 {
     7     int a[100005];
     8     int n;
     9     scanf("%d",&n);
    10     for(int i=0;i<n;i++)
    11         scanf("%d",&a[i]);
    12     int ans=0,maxn=1;
    13     for(int i=1;i<n;i++)
    14         if(a[i]>=a[i-1])maxn++;
    15         else ans=max(maxn,ans),maxn=1;
    16     ans=max(maxn,ans);
    17     printf("%d
    ",ans);
    18     return 0;
    19 }
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  • 原文地址:https://www.cnblogs.com/homura/p/4988052.html
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