蓝桥杯-2019第十届蓝桥杯B组C++数列求值

#include<cstdio>
#include<cstdlib>
#include<cstring>
#include<cmath>
#include<iostream>
#include<algorithm>
#include<string>
#include<vector>
#include<queue>
#include<map>
#include<set>
using namespace std;

#define MOD 10000
 
int num[20190324]={1,1,1};
 
int main()
{
	for(int i=3;i<20190324;i++)
	{
		num[i]=(num[i-3]+num[i-2])%MOD;
		num[i]=(num[i-1]+num[i])%MOD; 
	}
	cout<<num[20190323]<<endl;
	return 0;
}