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ID | Problem | Submitter | Result | Time | Memory | Language | File size | Submit time | Judge time |
---|---|---|---|---|---|---|---|---|---|
#298049 | #6303. Inversion | PlentyOfPenalty# | WA | 64ms | 17320kb | C++20 | 912b | 2024-01-05 16:35:48 | 2024-01-05 16:35:48 |
Judging History
answer
#include<bits/stdc++.h>
#define all(x) begin(x),end(x)
using namespace std;
const int N=2e3+9;
int n,p[N+10],pos[N+10],q[N+10][N+10];
int cnt=0;
int Que(int l,int r){
if(l>=r)return 0;
assert((++cnt)<=40000);
cout<<"? "<<l<<" "<<r<<"\n";
cout<<flush;
int ret;
cin>>ret;
return ret;
}
bool Check(int x,int y){
int a=Que(x,y),b=Que(x+1,y);
return a^b^q[x][y-1]^q[x+1][y-1];
}
int l,r,mid,fl;
int main(){
#ifndef ONLINE_JUDGE
//freopen(".in","r",stdin);
#endif
cin.tie(0)->sync_with_stdio(0);
cin>>n;
p[1]=1,pos[1]=1,q[1][1]=0;
for(int i=2;i<=n;++i){
l=0,r=i-1;
while(l<r){
mid=(l+r+1>>1);
if(Check(pos[mid],i))r=mid-1;
else l=mid;
}
for(int j=i-1;j>l;--j)++p[pos[j]],pos[j+1]=j;
p[pos[l+1]=i]=l+1;
fl=0;
for(int j=i-1;j>=1;--j)fl^=(p[j]>p[i]),q[j][i]=q[j][i-1]^fl;
}
cout<<"! ";
for(int i=1;i<=n;++i)cout<<p[i]<<" ";
cout<<flush;
}
Details
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Test #1:
score: 100
Accepted
time: 1ms
memory: 3704kb
input:
3 0 0 1
output:
? 1 2 ? 1 3 ? 2 3 ! 2 3 1
result:
ok OK, guesses=3
Test #2:
score: -100
Wrong Answer
time: 64ms
memory: 17320kb
input:
1993 0 0 0 0 0 0 0 1 0 0 1 0 0 0 0 0 1 0 0 1 0 0 0 1 1 0 1 0 1 1 1 1 1 0 0 1 1 0 1 0 1 1 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 1 0 1 1 0 0 1 1 1 0 0 1 0 0 0 0 1 0 0 1 1 0 0 0 0 1 0 0 1 0 1 0 1 0 1 1 0 1 1 1 1 1 0 1 0 0 0 1 1 1 0 0 1 1 0 0 0 0 0 1 0 0 1 1 0 0 1 0 0 0 0 0 0 0 0 0 1 0 1 1 0 0 0 1 0 1...
output:
? 1 2 ? 1 3 ? 2 3 ? 2 3 ? 2 4 ? 3 4 ? 3 4 ? 2 5 ? 3 5 ? 1 5 ? 2 5 ? 2 6 ? 3 6 ? 5 6 ? 1 6 ? 2 6 ? 2 7 ? 3 7 ? 5 7 ? 6 7 ? 3 8 ? 4 8 ? 1 8 ? 2 8 ? 2 8 ? 3 8 ? 8 9 ? 1 9 ? 2 9 ? 2 9 ? 3 9 ? 4 10 ? 5 10 ? 1 10 ? 2 10 ? 7 10 ? 8 10 ? 4 11 ? 5 11 ? 10 11 ? 2 11 ? 3 11 ? 3 11 ? 4 11 ? 5 12 ? 6 12 ? 8 12 ?...
result:
wrong answer Wa.