UVA 11137 Ingenuous Cubrency

/*
Name:UVA 11137 Ingenuous Cubrency-AC
Copyright:angieeve
Author: zj
Date: 28/03/13 11:20
Description: coin change
*/

#include <iostream>
#include <cstdlib>
#include <cstdio>
using namespace std;
int casen;
long long  dp[10010];
int coin[25];
int main()
{
dp[0]=1;

for(int i=0;i<21;i++){
coin[i]=(i+1)*(i+1)*(i+1);}

for(int i=0;i<21;i++){
for(int j=1;j<10000;j++){
if(j>=coin[i])
dp[j]+=dp[j-coin[i]];
}}
int casen;
while(cin>>casen){
cout<<dp[casen]<<endl;
}
return 0;
}