hdu 4472 Count（递推即dp)

题目链接：http://acm.hdu.edu.cn/showproblem.php?pid=4472

代码：

#include <cstdio>
#include <cstring>
#include <iostream>
#include <cmath>
#include <algorithm>
#include <queue>
#include <vector>
#include <utility>
using namespace std;

const int maxn = ;
const int maxe = 1e6+;
const int INF  = 0x3f3f3f3f;
const int mod = 1e9 +;

int main()
{

    long long dp[maxn];
    int n;
    dp[] = ;
    dp[] = ;
    dp[] = ;
    for(int i=;i<=;i++)
    {
        dp[i] = dp[i-];
        for(int j=;j<=i-;j++)
        {
            if((i-)%j == )
            {
                dp[i] += dp[(i-)/j];
            }
        }
    }

    int T = ;
    while(cin>>n)
    {
        printf("Case %d: %d\n",++T,dp[n]%mod);
    }
}