QOJ.ac
QOJ
ID | Problem | Submitter | Result | Time | Memory | Language | File size | Submit time | Judge time |
---|---|---|---|---|---|---|---|---|---|
#96469 | #6303. Inversion | Liberty12619 | WA | 214ms | 35168kb | C++20 | 1.4kb | 2023-04-13 21:48:30 | 2023-04-13 21:48:33 |
Judging History
answer
#include<bits/stdc++.h>
#define int long long
#define x first
#define y second
using namespace std;
const int N = 2e3+10,mod = 998244353,INF=1e9+10;
const double eps = 1e-8;
typedef pair<int,int>PII;
typedef pair<int,PII>PIII;
int pos[N],a[N];
int dp[N][N];
int query(int l,int r)
{
int &v = dp[l][r];
if(v!=-1) return v;
cout<<"? "<<l<<" "<<r<<endl;
int x;
cin>>x;
return v=x;
}
bool check(int mid,int x)
{
int cnt=0;
for(int i=pos[mid]+1;i<x;i++)
if(a[i]<mid) cnt++;
int ans = ((query(pos[mid],x)-query(pos[mid]+1,x)-cnt)%2+2)%2;
return ans;
}
void solve()
{
int n;
cin>>n;
if(n==1)
{
cout<<"! "<<1<<endl;
return;
}
memset(dp,-1,sizeof dp);
int t = query(1,2);
if(t)
{
a[1]=2,a[2]=1;
pos[1]=2,pos[2]=1;
}
else
{
a[1]=1,a[2]=2;
pos[1]=1,pos[2]=2;
}
for(int i=3;i<=n;i++)
{
int l=1,r=i-1;
while(l<r)
{
int mid = l+r>>1;
if(check(mid,i)) r=mid;
else l=mid+1;
}
for(int j=i-1;j>=l;j--) a[pos[j]]++,pos[j+1]=pos[j];
pos[l]=i,a[i]=l;
}
cout<<"!";
for(int i=1;i<=n;i++) cout<<" "<<a[i];
cout<<endl;
}
signed main()
{
int T =1 ;
while(T--)
{
solve();
}
return 0;
}
Details
Tip: Click on the bar to expand more detailed information
Test #1:
score: 100
Accepted
time: 2ms
memory: 34860kb
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: 214ms
memory: 35168kb
input:
1993 0 0 0 0 0 0 1 0 1 0 0 0 0 0 0 0 1 1 0 0 0 1 0 0 0 0 1 1 0 1 0 1 0 1 1 1 1 1 1 1 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 1 1 1 1 0 1 1 0 1 1 0 0 1 1 1 0 0 0 1 0 0 0 0 1 1 0 0 1 0 0 1 1 1 0 0 1 1 0 1 1 1 1 1 0 1 0 0 0 0 0 1 0 0 1 0 1 1 0 1 1 0 0 1 1 0 1 1 1 0 1 0 1 0 0 0 1 1 0 1 1 0 0 1 0 1 0 0 0...
output:
? 1 2 ? 1 3 ? 2 3 ? 3 4 ? 4 4 ? 3 5 ? 4 5 ? 1 5 ? 2 5 ? 3 6 ? 4 6 ? 1 6 ? 2 6 ? 5 6 ? 6 6 ? 1 7 ? 2 7 ? 6 7 ? 7 7 ? 5 7 ? 1 8 ? 2 8 ? 4 8 ? 5 8 ? 3 8 ? 1 9 ? 2 9 ? 3 9 ? 4 9 ? 8 9 ? 9 9 ? 9 10 ? 10 10 ? 6 10 ? 7 10 ? 5 10 ? 8 10 ? 1 11 ? 2 11 ? 3 11 ? 4 11 ? 8 11 ? 9 11 ? 10 11 ? 11 12 ? 12 12 ? 3 1...
result:
wrong answer Wa.