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QOJ

IDProblemSubmitterResultTimeMemoryLanguageFile sizeSubmit timeJudge time
#489679#8819. CNOI KnowledgeJryno1WA 1ms3612kbC++14980b2024-07-24 22:43:332024-07-24 22:43:33

Judging History

你现在查看的是最新测评结果

  • [2024-07-24 22:43:33]
  • 评测
  • 测评结果:WA
  • 用时:1ms
  • 内存:3612kb
  • [2024-07-24 22:43:33]
  • 提交

answer

#include<bits/stdc++.h>
using namespace std;
#define int unsigned long long
const int maxn=5005,bas=998244353;
int cha[maxn],s[maxn],n,cnt[maxn];
map<int,int>lst;
int qr(int l,int r){
    cout<<"? "<<l<<" "<<r<<"\n";
    cout.flush();
    int x;
    cin>>x;
    return x;
}
signed main(){
    cin>>n;
    cnt[1]=1,s[1]=1,lst[1]=1;
    for(int i=2;i<=n;i++){
        for(int j=1;j<=n;j++)cha[j]=0;
        int l=1,r=i-1,res=-1;
        while(l<=r){
            int mid=(l+r)>>1;
            if(qr(mid,i)==cnt[mid]+i-mid+1)r=mid-1,res=mid;
            else l=mid+1;
        }
        if(res!=-1)s[i]=s[res];
        else s[i]=i;
        int hsh=0;
        for(int j=i;j>=1;j--){
            hsh=hsh*bas+s[j];
            cha[lst[hsh]+1]++;
            cha[j+1]--;
            lst[hsh]=j;
        }
        for(int j=1;j<=i;j++)cha[i]+=cha[i-1],cnt[i]+=cha[i];
    }
    cout<<"!"<<"\n";
    for(int i=1;i<=n;i++)cout<<s[i]<<" ";
    return 0;
}

Details

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Test #1:

score: 0
Wrong Answer
time: 1ms
memory: 3612kb

input:

12
3
6
3
6
10
10
6
3
10
6
3
15
6
3
14
6
3
20
10
6
3
19
9
5
2
25
8
5
3
25
9
6
3

output:

? 1 2
? 1 3
? 2 3
? 2 4
? 1 4
? 2 5
? 3 5
? 4 5
? 3 6
? 4 6
? 5 6
? 3 7
? 5 7
? 6 7
? 4 8
? 6 8
? 7 8
? 4 9
? 6 9
? 7 9
? 8 9
? 5 10
? 7 10
? 8 10
? 9 10
? 5 11
? 8 11
? 9 11
? 10 11
? 6 12
? 9 12
? 10 12
? 11 12
!
1 1 3 1 5 6 7 8 9 10 11 12 

result:

wrong answer Wrong Answer.