#include <bits/stdc++.h>
#define speed ios::sync_with_stdio(0);cin.tie(0)
using namespace std;
const int mod = 20200111;
int main() {
speed;
int n; cin >> n;
vector<long long> a(n + 1), b(n + 1);
a[0] = 1;
a[1] = 1;
b[0] = 0;
b[1] = 2;
for (int i = 2; i <= n; i++) {
a[i] = (a[i - 1] + a[i - 2] + b[i - 2]) % mod;
b[i] = (b[i - 1] + b[i - 2] + 2 * a[i - 1]) % mod;
}
cout << a[n];
}
Részfeladat | Összpont | Teszt | Verdikt | Idő | Memória | ||
---|---|---|---|---|---|---|---|
base | 40/40 | ||||||
1 | Elfogadva | 0/0 | 3ms | 1828 KiB | |||
2 | Elfogadva | 0/0 | 2ms | 2016 KiB | |||
3 | Elfogadva | 1/1 | 2ms | 2220 KiB | |||
4 | Elfogadva | 1/1 | 2ms | 2424 KiB | |||
5 | Elfogadva | 2/2 | 2ms | 2628 KiB | |||
6 | Elfogadva | 2/2 | 2ms | 2832 KiB | |||
7 | Elfogadva | 3/3 | 2ms | 3068 KiB | |||
8 | Elfogadva | 3/3 | 2ms | 3268 KiB | |||
9 | Elfogadva | 3/3 | 2ms | 3472 KiB | |||
10 | Elfogadva | 3/3 | 2ms | 3576 KiB | |||
11 | Elfogadva | 3/3 | 2ms | 3620 KiB | |||
12 | Elfogadva | 3/3 | 2ms | 3756 KiB | |||
13 | Elfogadva | 3/3 | 2ms | 3956 KiB | |||
14 | Elfogadva | 3/3 | 2ms | 4184 KiB | |||
15 | Elfogadva | 3/3 | 2ms | 4392 KiB | |||
16 | Elfogadva | 3/3 | 2ms | 4460 KiB | |||
17 | Elfogadva | 4/4 | 2ms | 4568 KiB |