Submission #21,270

2026-01-12 17:38:49

cpp17

Time limit exceeded 20/30

200ms

1844 KiB

// UUID: 7a49d2da-8a8a-4b69-b6c9-969ce61ee1ea
#include <bits/stdc++.h>
using namespace std;
int mod = 2023;

int main() {
	int n; cin >> n;
	vector<array<long long, 2>> dp (n+1);
	dp[0][0] = 1;
	dp[0][1] = 1;
	dp[1][0] = 1;
	dp[1][1] = 2;
	for (int i = 2; i <= n; i++) {
		dp[i][0] = (dp[i-1][1] + dp[i-1][0] + dp[i-2][1]) % mod;
		dp[i][1] = (dp[i][0] + dp[i-1][1] + 2*dp[i-2][1] + 3*dp[i-1][0]) % mod;
		cerr << dp[i][0] << " " << dp[i-1][1] << " 2*" << dp[i-2][1] << " 3*" << dp[i-1][0] << endl;
	}
	cout << dp[n][1];
}

	Sum	Test	Verdict		Time	Memory
base	20/30
		1	Accepted	0/0	1ms	500 KiB
		2	Accepted	0/0	1ms	316 KiB
		3	Accepted	2/2	1ms	500 KiB
		4	Accepted	2/2	1ms	316 KiB
		5	Accepted	2/2	1ms	512 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	96ms	844 KiB
		10	Time limit exceeded	0/2	108ms	820 KiB
		11	Time limit exceeded	0/2	200ms	1332 KiB
		12	Time limit exceeded	0/3	199ms	1588 KiB
		13	Accepted	3/3	28ms	316 KiB
		14	Accepted	3/3	35ms	564 KiB
		15	Time limit exceeded	0/3	192ms	1844 KiB