Codeforces Round #321 (Div. 2) A. Kefa and First Steps 水题
A. Kefa and First Steps
Time Limit: 1 Sec
Memory Limit: 256 MB
题目连接
http://codeforces.com/contest/580/problem/A
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 makesai 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 Input
6
2 2 1 3 4 1
Sample Output
3
HINT
题意
求最长非降子序列
题解:
暴力扫一遍就好了……
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代码:
//qscqesze
#pragma comment(linker, "/STACK:1024000000,1024000000")
#include <cstdio>
#include <cmath>
#include <cstring>
#include <ctime>
#include <iostream>
#include <algorithm>
#include <set>
#include <bitset>
#include <vector>
#include <sstream>
#include <queue>
#include <typeinfo>
#include <fstream>
#include <map>
#include <stack>
typedef long long ll;
using namespace std;
//freopen("D.in","r",stdin);
//freopen("D.out","w",stdout);
#define sspeed ios_base::ssecondnc_with_stdio(0);cin.tie(0)
#define maxn 100006
#define mod 1000000007
#define eps 1e-9
#define PI acos(-1)
const double EP = 1E- ;
int Num;
//const int inf=0first7fffffff;
const ll inf=;
inline ll read()
{
ll x=,f=;char ch=getchar();
while(ch<''||ch>''){if(ch=='-')f=-;ch=getchar();}
while(ch>=''&&ch<=''){x=x*+ch-'';ch=getchar();}
return x*f;
}
//************************************************************************************* int a[maxn];
int ans = ;
int Ans = ;
int main()
{
int n=read();
for(int i=;i<n;i++)
{
a[i]=read();
}
for(int i=;i<n;i++)
{
if(a[i]>=a[i-])
{
ans++;
Ans=max(Ans,ans);
}
else
ans=;
}
printf("%d\n",Ans+);
}
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