Submission #19902

#	Time	Username	Problem	Language	Result	Execution time	Memory
19902		gs13068	동전 (kriii4_E)	C++98	100 / 100	95 ms	1636 KiB

D

#include <cstdio>
#include <map>

const int p = 1000000007;

using namespace std;

int pw(int x, int y)
{
	return y & 1 ? (long long)pw(x, y ^ 1)*x%p : y ? pw((long long)x*x%p, y >> 1) : 1;
}

int a[255];
int d[255][555];

int main()
{
	int i, j, k, n;
	scanf("%d", &n);
	a[0] = 0;
	d[0][0] = 1;
	a[1] = 1;
	d[1][0] = 1;
	d[1][1] = 1;
	for (i = 2; i <= n; i++)
	{
		for (j = 0; j < i; j++) for (k = 0; k < 555; k++) (d[i][k ^ a[j]] += d[i - j - 1][k]) %= p;
		for (a[i] = 0; d[i][a[i]]; a[i]++);
		d[i][a[i]] = 1;
	}
	printf("%d", d[n][0]);
}

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