NOI.AC
| 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 |
|---|---|---|---|---|---|---|---|---|---|
| #211946 | #3815. 种树 | kedaya_123 | 30 | 0ms | 1204kb | C++ | 863b | 2024-10-13 09:01:13 | 2024-10-13 12:52:29 |
answer
#include<bits/stdc++.h>
#define ll long long
using namespace std;
ll n,m,k,sum;
ll vis[20][20];
struct Q{
ll x;
ll y;
}q[405];
bool check(ll x,ll y,ll cnt){
for(ll i=1;i<=cnt;i++){
if((q[i].x==x-1&&q[i].y==y)||(q[i].x==x+1&&q[i].y==y)){
return false;
}
if((q[i].x==x&&q[i].y==y+1)||(q[i].x==x&&q[i].y==y-1)){
return false;
}
}
return true;
}
void _dfs(ll cnt,ll jx,ll jy){
if(cnt==k){
sum++;
}
for(ll i=jy;i<=n;i++){
if(check(jx,i,cnt)&&vis[jx][i]==0){
q[cnt+1]={jx,i};
vis[jx][i]=1;
_dfs(cnt+1,jx,i);
vis[jx][i]=0;
}
}
for(ll i=jx+1;i<=n;i++){
for(ll j=1;j<=m;j++){
if(check(i,j,cnt)&&vis[i][j]==0){
q[cnt+1]={i,j};
vis[i][j]=1;
_dfs(cnt+1,i,j);
vis[i][j]=0;
}
}
}
return;
}
int main(){
cin>>n>>m>>k;
_dfs(0,1,1);
cout<<sum;
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: 1204kb
input:
2 2 1
output:
4
result:
ok 1 number(s): "4"
Test #2:
score: 0
Wrong Answer
time: 0ms
memory: 1204kb
input:
2 3 2
output:
4
result:
wrong answer 1st numbers differ - expected: '8', found: '4'
Test #3:
score: 10
Accepted
time: 0ms
memory: 1200kb
input:
4 4 2
output:
96
result:
ok 1 number(s): "96"
Test #4:
score: 10
Accepted
time: 0ms
memory: 1204kb
input:
4 4 5
output:
304
result:
ok 1 number(s): "304"
Test #5:
score: 0
Wrong Answer
time: 0ms
memory: 1200kb
input:
3 4 3
output:
41
result:
wrong answer 1st numbers differ - expected: '84', found: '41'
Test #6:
score: 0
Wrong Answer
time: 0ms
memory: 1204kb
input:
3 5 2
output:
50
result:
wrong answer 1st numbers differ - expected: '83', found: '50'
Test #7:
score: 0
Wrong Answer
time: 0ms
memory: 1204kb
input:
3 5 3
output:
66
result:
wrong answer 1st numbers differ - expected: '215', found: '66'
Test #8:
score: 0
Wrong Answer
time: 0ms
memory: 1200kb
input:
3 5 4
output:
24
result:
wrong answer 1st numbers differ - expected: '276', found: '24'
Test #9:
score: 0
Wrong Answer
time: 0ms
memory: 1204kb
input:
3 5 5
output:
3
result:
wrong answer 1st numbers differ - expected: '174', found: '3'
Test #10:
score: 0
Wrong Answer
time: 0ms
memory: 1204kb
input:
4 3 5
output:
205
result:
wrong answer 1st numbers differ - expected: '18', found: '205'
