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QOJ
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 |
---|---|---|---|---|---|---|---|---|---|
#199788 | #7346. Frogs | SolitaryDream# | WA | 1ms | 9884kb | C++20 | 1.2kb | 2023-10-04 14:03:06 | 2023-10-04 14:03:07 |
Judging History
answer
#include<bits/stdc++.h>
using namespace std;
const int N=2e5+1e3+7;
int n,a[N];
vector<int> v[N];
int p[N];
int w[N];
void dfs(int l,int r,int d)
{
int t=(d+1)*2;
if(l>r)
return;
vector<int> s;
s.push_back(l);
auto it=upper_bound(v[t].begin(),v[t].end(),l);
while(it<v[t].end()&&*it<r)
s.push_back(*it),it++;
s.push_back(r);
for(int i=0;i<s.size();i++)
{
p[s[i]]=s[(i+1)%s.size()];
if(i<s.size())
dfs(s[i]+1,s[i+1]-1,d+1);
}
}
int main()
{
scanf("%d",&n);
for(int i=1;i<n;i++)
{
scanf("%d",&a[i]);
}
for(int i=2;i<n;i++)
if(a[i-1]==a[i])
v[a[i]].push_back(i);
dfs(1,n,0);
for(int i=1;i<=n;i++)
{
int l=i,r=p[i];
if(l>r)
swap(l,r);
w[l]++,w[r]--;
}
for(int i=1;i<=n;i++)
w[i]+=w[i-1];
bool ok=1;
for(int i=1;i<n;i++)
if(w[i]!=a[i])
ok=0;
for(int i=1;i<=n;i++)
if(!p[i])
ok=0;
if(!ok)
puts("No");
else
{
puts("Yes");
for(int i=1;i<=n;i++)
printf("%d%c",p[i]," \n"[i==n]);
}
}
详细
Test #1:
score: 100
Accepted
time: 0ms
memory: 8528kb
input:
5 2 4 2 2
output:
Yes 4 3 2 5 1
result:
ok Correct answer.
Test #2:
score: 0
Accepted
time: 1ms
memory: 9012kb
input:
4 1 2 3
output:
No
result:
ok Correct answer.
Test #3:
score: -100
Wrong Answer
time: 1ms
memory: 9884kb
input:
2 0
output:
No
result:
wrong answer Expected YES, found NO on the first line