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Submission #19815

# Submission time Handle Problem Language Result Execution time Memory
19815 2016-02-25T05:53:35 Z yukariko 괄호 (kriii4_R) C++14
0 / 100
 8 ms 4088 KB 
#include <bits/stdc++.h>
using namespace std;
typedef long long ll;

const ll MOD = 1000000007;

ll N, K;

int main() {
	scanf("%lld%lld", &N, &K);
	vector<ll> cache(N + 1);
	cache[0] = cache[1] = 1;
	for (ll i = 2; i <= N; i++)
		cache[i] = ((cache[i - 1] * 2 + cache[i - 2] * 4 * (i - 1)) % MOD / (i + 1) % MOD) % MOD;
	printf("%lld", cache[N]);
	return 0;
}

Subtask #1
0.0 / 8.0

# Verdict Execution time Memory Grader output
1 Incorrect 8 ms 4088 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #2
0.0 / 92.0

# Verdict Execution time Memory Grader output
1 Halted 0 ms 0 KB -