Submission #709

2021-11-18 20:13:19

cpp14

Accepted 50/50

16ms

9764 KiB

#include <bits/stdc++.h>
using namespace std;

const int mod = 20210108;

void solve() {
    int n;
    cin >> n;
    vector<int> dp(1 + n, 0);
    dp[0] = int(1ll);
    for(int i = 1; i <= n; i++) {
        dp[i] += 2 * dp[i - 1];
        if(i >= 3) {
            dp[i] += 2 * dp[i - 3];
        }
        dp[i] %= mod;
    }
    cout << dp[n] << "\n";
}

int main() {
    ios_base::sync_with_stdio(false);
    cin.tie(nullptr);
    solve();
    return 0;
}

	Sum	Test	Verdict		Time	Memory
base	50/50
		1	Accepted	0/0	3ms	2008 KiB
		2	Accepted	0/0	2ms	2080 KiB
		3	Accepted	3/3	2ms	2120 KiB
		4	Accepted	3/3	2ms	2128 KiB
		5	Accepted	4/4	1ms	2132 KiB
		6	Accepted	4/4	2ms	2136 KiB
		7	Accepted	4/4	10ms	9744 KiB
		8	Accepted	4/4	2ms	2988 KiB
		9	Accepted	4/4	1ms	2152 KiB
		10	Accepted	4/4	2ms	2152 KiB
		11	Accepted	4/4	4ms	3516 KiB
		12	Accepted	4/4	9ms	9764 KiB
		13	Accepted	4/4	8ms	8856 KiB
		14	Accepted	4/4	16ms	4568 KiB
		15	Accepted	2/2	1ms	2172 KiB
		16	Accepted	2/2	1ms	2172 KiB