#include <bits/stdc++.h>
#define MOD 20200111LL
#define FastIO ios::sync_with_stdio(false); cin.tie(NULL); cout.tie(NULL)
using namespace std;
typedef long long ll;
int main() {
FastIO;
ll i, N;
cin >> N;
vector<ll> a(N + 1);
vector<ll> b(N + 1);
a[0] = 1;
a[1] = 1;
a[2] = 2;
b[0] = 1;
b[1] = 0;
b[2] = 2;
for(i = 3; i <= N; i++) {
a[i] = (a[i - 1] + a[i - 2] + b[i - 1]) % MOD;
b[i] = (b[i - 2] + b[i - 1] + 2 * a[i - 2]) % MOD;
}
cout << a[N] << '\n';
return 0;
}
Részfeladat | Összpont | Teszt | Verdikt | Idő | Memória | ||
---|---|---|---|---|---|---|---|
base | 40/40 | ||||||
1 | Elfogadva | 0/0 | 3ms | 1832 KiB | |||
2 | Elfogadva | 0/0 | 3ms | 2032 KiB | |||
3 | Elfogadva | 1/1 | 3ms | 2236 KiB | |||
4 | Elfogadva | 1/1 | 3ms | 2468 KiB | |||
5 | Elfogadva | 2/2 | 3ms | 2704 KiB | |||
6 | Elfogadva | 2/2 | 3ms | 2932 KiB | |||
7 | Elfogadva | 3/3 | 3ms | 2896 KiB | |||
8 | Elfogadva | 3/3 | 3ms | 3024 KiB | |||
9 | Elfogadva | 3/3 | 3ms | 3228 KiB | |||
10 | Elfogadva | 3/3 | 3ms | 3308 KiB | |||
11 | Elfogadva | 3/3 | 3ms | 3444 KiB | |||
12 | Elfogadva | 3/3 | 3ms | 3532 KiB | |||
13 | Elfogadva | 3/3 | 3ms | 3520 KiB | |||
14 | Elfogadva | 3/3 | 3ms | 3756 KiB | |||
15 | Elfogadva | 3/3 | 3ms | 3984 KiB | |||
16 | Elfogadva | 3/3 | 3ms | 3972 KiB | |||
17 | Elfogadva | 4/4 | 3ms | 3976 KiB |