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QOJ
ID | Problem | Submitter | Result | Time | Memory | Language | File size | Submit time | Judge time |
---|---|---|---|---|---|---|---|---|---|
#489273 | #8819. CNOI Knowledge | DEMONKILLER | WA | 0ms | 3896kb | C++14 | 1.2kb | 2024-07-24 19:16:19 | 2024-07-24 19:16:20 |
Judging History
answer
#include<bits/stdc++.h>
#define N 1010
using namespace std;
int query(int l,int r){
printf("? %d %d\n",l,r);
fflush(stdout);
int x;
scanf("%d",&x);
return x;
}
int n,cnt,ans[N],sum[N],s[N],c[N],nxt[N],vis[N];
int main(){
scanf("%d",&n);
for(int i=1;i<=n;i++){
int l=1,r=i-1,Res=0;
while(l<=r){
int mid=(l+r)>>1;
if(query(mid,i)-sum[mid]<=i-mid){
l=mid+1;
Res=mid;
}
else r=mid-1;
}
if(!Res)ans[i]=++cnt;
else ans[i]=ans[Res];
for(int j=1;j<=i;j++){
s[i-j+1]=ans[i];
vis[i]=0;
}
for(int j=2,k=0;j<=i;j++){
while(k&&s[k+1]!=s[j])k=nxt[k];
if(s[k+1]==s[j])k++;
nxt[j]=k;
}
for(int j=2;j<=i;j++){
if(nxt[j]&&!vis[nxt[j]]){
c[j]=0;
vis[nxt[j]]=true;
}
else c[j]=1;
}
for(int j=1;j<=i;j++){
c[j]+=c[j-1];
sum[i-j+1]+=c[j];
}
}
putchar('!');
for(int i=1;i<=n;i++)
printf(" %d",ans[i]);
}
Details
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Test #1:
score: 0
Wrong Answer
time: 0ms
memory: 3896kb
input:
12 3 6 6 10 10 15 10 21 15 27 14 26 34 20 34 43 19 42 52 25 51 62 25 50 72
output:
? 1 2 ? 1 3 ? 2 4 ? 1 4 ? 2 5 ? 1 5 ? 3 6 ? 1 6 ? 3 7 ? 1 7 ? 4 8 ? 2 8 ? 1 8 ? 4 9 ? 2 9 ? 1 9 ? 5 10 ? 2 10 ? 1 10 ? 5 11 ? 2 11 ? 1 11 ? 6 12 ? 3 12 ? 1 12 ! 1 2 3 4 5 6 7 8 9 10 11 12
result:
wrong answer Wrong Answer.