NOI.AC
| ID | Problem | Submitter | Result | Time | Memory | Language | File size | Submit time | Judge time |
|---|---|---|---|---|---|---|---|---|---|
| #211987 | #3815. 种树 | 15338873915 | 100 | 1ms | 1200kb | C++ | 492b | 2024-10-13 09:37:57 | 2024-10-13 12:54:19 |
answer
#include <iostream>
using namespace std;
int n,m,k;
int cnt=0;
int arr[21][21];
bool QAQ(int x,int y){
return arr[x][y]==0&&(x==0||arr[x-1][y]==0)&&(x==n-1||arr[x+1][y]==0)&&(y==0||arr[x][y-1]==0)&&(y==m-1||arr[x][y+1]==0);
}
void qwq(int p,int begin){
if(p==k){cnt++;return;}
for(int i=begin;i<n*m;i++){
int x=i/m;
int y=i%m;
if(QAQ(x,y)){
arr[x][y]=1;
qwq(p+1,i+1);
arr[x][y]=0;
}
}
}
int main() {
cin>>n>>m>>k;
qwq(0,0);
cout<<cnt<<endl;
}
Details
小提示：点击横条可展开更详细的信息
Test #1:
score: 10
Accepted
time: 0ms
memory: 1196kb
input:
2 2 1
output:
4
result:
ok 1 number(s): "4"
Test #2:
score: 10
Accepted
time: 0ms
memory: 1196kb
input:
2 3 2
output:
8
result:
ok 1 number(s): "8"
Test #3:
score: 10
Accepted
time: 0ms
memory: 1196kb
input:
4 4 2
output:
96
result:
ok 1 number(s): "96"
Test #4:
score: 10
Accepted
time: 0ms
memory: 1200kb
input:
4 4 5
output:
304
result:
ok 1 number(s): "304"
Test #5:
score: 10
Accepted
time: 0ms
memory: 1196kb
input:
3 4 3
output:
84
result:
ok 1 number(s): "84"
Test #6:
score: 10
Accepted
time: 0ms
memory: 1196kb
input:
3 5 2
output:
83
result:
ok 1 number(s): "83"
Test #7:
score: 10
Accepted
time: 0ms
memory: 1200kb
input:
3 5 3
output:
215
result:
ok 1 number(s): "215"
Test #8:
score: 10
Accepted
time: 1ms
memory: 1196kb
input:
3 5 4
output:
276
result:
ok 1 number(s): "276"
Test #9:
score: 10
Accepted
time: 0ms
memory: 1196kb
input:
3 5 5
output:
174
result:
ok 1 number(s): "174"
Test #10:
score: 10
Accepted
time: 0ms
memory: 1196kb
input:
4 3 5
output:
18
result:
ok 1 number(s): "18"
Extra Test:
score: 0
Extra Test Passed
