제출 #19972

#제출 시각아이디문제언어결과실행 시간메모리
19972qataro동전 (kriii4_E)C++98
0 / 100
0 ms1576 KiB
#include <cstdio>
#include <vector>


using namespace std;

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

	vector<long long> winCnt(n + 3);
	winCnt[1] = 1;
	winCnt[2] = 1;
	///winCnt[3] = 2;

	for(int i = 3; i <= n; i++)
		winCnt[i] = winCnt[i - 1] + winCnt[i-1]/2 + (i-2)/2 + i%2;

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

	return 0;
}
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