Submission #21,219

2026-01-12 17:10:03

cpp17

Accepted 30/30

4ms

1076 KiB

// UUID: d33e64be-18db-4960-b59c-21ef91677558
#include <bits/stdc++.h>
using namespace std;

int MOD=2023;

int main() {
	int n;cin>>n;
	vector<array<int, 2>> dp(n+1);
	dp[1][0]=1;
	dp[1][1]=2;
	dp[2][0]=4;
	dp[2][1]=11;
	for(int i=3;i<=n;i++){
		dp[i][0]=dp[i-1][0]+dp[i-1][1]+dp[i-2][1];
		dp[i][0]%=MOD;
		dp[i][1]=dp[i-1][1]+3*dp[i-1][0]+2*dp[i-2][1]+dp[i][0];
		dp[i][1]%=MOD;
	}
	cout<<dp[n][1]%MOD<<'\n';
}

	Sum	Test	Verdict		Time	Memory
base	30/30
		1	Accepted	0/0	1ms	508 KiB
		2	Accepted	0/0	1ms	316 KiB
		3	Accepted	2/2	1ms	316 KiB
		4	Accepted	2/2	1ms	316 KiB
		5	Accepted	2/2	1ms	316 KiB
		6	Accepted	2/2	1ms	316 KiB
		7	Accepted	2/2	1ms	316 KiB
		8	Accepted	2/2	1ms	316 KiB
		9	Accepted	2/2	2ms	564 KiB
		10	Accepted	2/2	2ms	784 KiB
		11	Accepted	2/2	3ms	820 KiB
		12	Accepted	3/3	4ms	820 KiB
		13	Accepted	3/3	1ms	316 KiB
		14	Accepted	3/3	1ms	316 KiB
		15	Accepted	3/3	4ms	1076 KiB