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QOJ
ID | Problem | Submitter | Result | Time | Memory | Language | File size | Submit time | Judge time |
---|---|---|---|---|---|---|---|---|---|
#673807 | #6303. Inversion | sc2005# | WA | 82ms | 19356kb | C++20 | 1.4kb | 2024-10-25 10:28:00 | 2024-10-25 10:28:01 |
Judging History
answer
#include<bits/stdc++.h>
using namespace std;
#define fo(i,a,b) for(int i=a;i<=b;++i)
#define fre(x) freopen(#x".in","r",stdin);freopen(#x".out","w",stdout)
typedef long long ll;
template<typename T>inline void read(T &a){
char c=getchar();T x=0,f=1;
while(!isdigit(c)){if(c=='-')f=-1;c=getchar();}
while(isdigit(c)){x=(x<<1)+(x<<3)+(c^48);c=getchar();}
a=f*x;
}
inline void write(ll x){
char P[105];int w=0;
if(x<0)putchar('-'),x=-x;
if(x==0)printf("0");
while(x)P[++w]=x%10+'0',x/=10;
for(int i=w;i;i--)putchar(P[i]);
}
const int N=2e3+10;
int a[N];
int qa[N][N];
int query(int l,int r){
if(r<l)swap(l,r);
if(l==r)return 0;
if(qa[l][r]!=-1)return qa[l][r];
cout<<"? "<<l<<" "<<r<<endl;
int x;cin>>x;
return qa[l][r]=x;
}
bool cmp(int x,int y){
int tt=0;
if(x>y){swap(x,y);tt=1;}
if(x==y)return 0;
if(y-x==1){
return (query(x,y))^tt;
}
int x1=query(x,y),x2=query(x+1,y),x3=query(x,y-1),x4=query(x+1,y-1);
int t=x1+x4-x2-x3;
t=(t+4)%2;
//printf("%d %d %d %d\n",x,y,t,tt);
return (t)^tt;
}
int ans[N];
int main()
{
int n;scanf("%d",&n);
for(int i=1;i<=n;++i)
for(int j=1;j<=n;++j)
qa[i][j]=-1;
for(int i=1;i<=n;++i)a[i]=i;
sort(a+1,a+n+1,cmp);
cout<<"! ";
for(int i=1;i<=n;++i)ans[a[i]]=n+1-i;
for(int i=1;i<=n;++i)cout<<ans[i]<<" ";
cout<<endl;
return 0;
}
Details
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Test #1:
score: 100
Accepted
time: 1ms
memory: 3624kb
input:
3 0 1 0
output:
? 1 2 ? 2 3 ? 1 3 ! 2 3 1
result:
ok OK, guesses=3
Test #2:
score: -100
Wrong Answer
time: 82ms
memory: 19356kb
input:
1993 1 0 1 1 0 0 1 1 1 1 1 1 0 0 0 0 1 0 1 0 1 1 0 1 1 1 1 1 0 0 1 1 1 0 0 0 1 0 1 1 0 0 0 1 1 0 1 1 1 0 0 0 0 0 1 1 1 0 0 0 0 1 1 1 1 0 0 0 0 0 0 0 0 0 0 1 1 0 0 0 1 0 0 1 1 1 0 0 1 0 1 1 1 0 1 0 1 1 0 1 0 0 0 0 1 0 1 1 1 0 1 1 1 0 1 0 1 1 0 0 0 1 1 0 1 1 1 1 1 0 0 0 0 1 1 1 0 1 0 0 0 1 1 0 1 0 0 0...
output:
? 2 997 ? 3 997 ? 2 996 ? 3 996 ? 997 1993 ? 998 1993 ? 997 1992 ? 998 1992 ? 2 1993 ? 3 1993 ? 2 1992 ? 3 1992 ? 1 2 ? 2 3 ? 2 4 ? 3 4 ? 2 5 ? 3 5 ? 2 1991 ? 3 1991 ? 2 1990 ? 3 1990 ? 2 1989 ? 3 1989 ? 2 1988 ? 3 1988 ? 2 1987 ? 3 1987 ? 2 6 ? 3 6 ? 2 1986 ? 3 1986 ? 2 7 ? 3 7 ? 2 1985 ? 3 1985 ? ...
result:
wrong output format Unexpected end of file - int32 expected