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ID题目提交者结果用时内存语言文件大小提交时间测评时间
#211953#3815. 种树KLLD1371100ms1244kbC++701b2024-10-13 09:05:352024-10-13 12:53:00

answer

#include <bits/stdc++.h>
using namespace std;

const int MAXN = 2e6 + 5;

bool vis[20][20];
bool r[20];
bool c[20];
map<int, int>md, sd;

int ans, n , m , k;

bool check(int x, int y)
{
	return r[x] == 0 and c[y] == 0;
}

void setVis(int x, int y, int z)
{
	vis[x][y] = z;
	r[x] = z;
	c[y] = z;
	md[x + y] = z;
	sd[x - y] = z;
}

void DFS(int x , int k)
{
	if (x == k + 1)
	{
		ans++;
		return;
	}
	for (int i = 1; i <= m; i++)
	{
		if (check(x, i))
		{
			setVis(x, i, 1);
			DFS(x + 1 , k);
			setVis(x, i, 0);
		}
	}
}

int main()
{
	cin >> n >> m >> k;
	for(int i = 1 ; i <= n - k + 1 ; i ++){
		DFS(i , k + i - 1);
	}
	cout << ans;
	return 0;
}

详细

小提示:点击横条可展开更详细的信息

Test #1:

score: 10
Accepted
time: 0ms
memory: 1240kb

input:

2 2 1

output:

4

result:

ok 1 number(s): "4"

Test #2:

score: 0
Wrong Answer
time: 0ms
memory: 1244kb

input:

2 3 2

output:

6

result:

wrong answer 1st numbers differ - expected: '8', found: '6'

Test #3:

score: 0
Wrong Answer
time: 0ms
memory: 1244kb

input:

4 4 2

output:

36

result:

wrong answer 1st numbers differ - expected: '96', found: '36'

Test #4:

score: 0
Wrong Answer
time: 0ms
memory: 1200kb

input:

4 4 5

output:

0

result:

wrong answer 1st numbers differ - expected: '304', found: '0'

Test #5:

score: 0
Wrong Answer
time: 0ms
memory: 1240kb

input:

3 4 3

output:

24

result:

wrong answer 1st numbers differ - expected: '84', found: '24'

Test #6:

score: 0
Wrong Answer
time: 0ms
memory: 1244kb

input:

3 5 2

output:

40

result:

wrong answer 1st numbers differ - expected: '83', found: '40'

Test #7:

score: 0
Wrong Answer
time: 0ms
memory: 1240kb

input:

3 5 3

output:

60

result:

wrong answer 1st numbers differ - expected: '215', found: '60'

Test #8:

score: 0
Wrong Answer
time: 0ms
memory: 1204kb

input:

3 5 4

output:

0

result:

wrong answer 1st numbers differ - expected: '276', found: '0'

Test #9:

score: 0
Wrong Answer
time: 0ms
memory: 1204kb

input:

3 5 5

output:

0

result:

wrong answer 1st numbers differ - expected: '174', found: '0'

Test #10:

score: 0
Wrong Answer
time: 0ms
memory: 1200kb

input:

4 3 5

output:

0

result:

wrong answer 1st numbers differ - expected: '18', found: '0'