csuoj 1390: Planting Trees

http://acm.csu.edu.cn/OnlineJudge/problem.php?id=1390

1390: Planting Trees

Time Limit: 1 Sec  Memory Limit: 128 MB
Submit: 192  Solved: 115
[Submit][Status][Web Board]

Description

Input

Output

Sample Input

6
39 38 9 35 39 20

Sample Output

42

HINT

Source

AC代码：

#include<stdio.h>
#include<string.h>
#include<iostream>
#include<algorithm>
using namespace std;

bool cmp(int a, int b)
{
    return a>b;
}

int main()
{
    int n, i, k, a[100010];
    while(scanf("%d",&n)!=EOF)
    {
        for(i=0; i<n; i++)
            scanf("%d",&a[i]);
        sort(a, a+n, cmp);
        k=0;
        for(i=0; i<n; i++)
        {
            k=max(a[i]+i+1, k);
        }
        printf("%d
", k+1);
    }
    return 0;
}