Submission #20018

#	Time	Username	Problem	Language	Result	Execution time	Memory
20018		qataro	동전 (kriii4_E)	C++98	0 / 100	0 ms	1576 KiB

D

#include <cstdio>
#include <vector>


using namespace std;

int main()
{
	int n;
	scanf("%d", &n);

	vector<long long> winCnt(n + 4);
	winCnt[1] = 1;
	winCnt[2] = 1;
	winCnt[3] = 2;
	winCnt[4] = 4;
	
	for(int i = 5; i <= n; i++)
		winCnt[i] = winCnt[i-1] + ((i-2)/2 + i%2) + (i - 4) * 2;

	printf("%lld", winCnt[n] % 1000000007);

	return 0;
}

• Subtask 1: 0 / 5
• Subtask 2: 0 / 95