Submission #19655

#	Time	Username	Problem	Language	Result	Execution time	Memory
19655		yukariko	괄호 (kriii4_R)	C++14	0 / 100	4 ms	19704 KiB

R

#include <bits/stdc++.h>

using namespace std;

const int MOD = 1000000007;

int N, M;

int cache[1000001];

int solve(int pos)
{
	if(pos > N)
		return 0;
	if(pos == N)
		return 1;

	int& ans = cache[pos];
	if(ans != -1)
		return ans;

	ans = (1LL * solve(pos + 1) * M) % MOD;
	ans = (ans + 1LL * solve(pos + 2) * M) % MOD;
	return ans;
}


int main()
{
	memset(cache, -1, sizeof(cache));
	scanf("%d%d", &N, &M);
	printf("%d", solve(0));
	return 0;
}

• Subtask 1: 0 / 8
• Subtask 2: 0 / 92