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QOJ
ID | Problem | Submitter | Result | Time | Memory | Language | File size | Submit time | Judge time |
---|---|---|---|---|---|---|---|---|---|
#373462 | #5143. Quick Sort | Siilhouette | WA | 51ms | 8040kb | C++14 | 2.7kb | 2024-04-01 18:15:20 | 2024-04-01 18:15:21 |
Judging History
answer
#define _CRT_SECURE_NO_WARNINGS
#include<queue>
#include<cmath>
#include<string>
#include<cstring>
#include<iostream>
#include<algorithm>
using namespace std;
const int N=500010;
int n,a[N];
struct SegmentTree{
int maxi[N<<2],mini[N<<1];
#define maxi(x) maxi[x]
#define mini(x) mini[x]
inline void build(int p,int l,int r)
{
if(l==r)return maxi(p)=mini(p)=a[l],void();
int mid=l+r>>1;
build(p<<1,l,mid),build(p<<1|1,mid+1,r);
maxi(p)=max(maxi(p<<1),maxi(p<<1|1));
mini(p)=min(mini(p<<1),mini(p<<1|1));
}
inline void change(int p,int l,int r,int d,int v)
{
if(l==r)return maxi(p)=mini(p)=v,void();
int mid=l+r>>1;
if(d<=mid)change(p<<1,l,mid,d,v);
if(d>mid)change(p<<1|1,mid+1,r,d,v);
maxi(p)=max(maxi(p<<1),maxi(p<<1|1));
mini(p)=min(mini(p<<1),mini(p<<1|1));
}
inline int query(int p,int l,int r,int L,int R,int v,int op) //op==0 min arg(i){a[i]>=v}
{//op==1 max arg(i){a[i]<=v)
// cout<<"query "<<p<<" "<<l<<" "<<r<<" "<<L<<" "<<R<<" "<<v<<" "<<op<<endl;
if(l==r)
{
if(!op)return a[l]>=v?l:-1;
else return a[l]<=v?l:-1;
}/**/
int mid=l+r>>1,res=-1;
if(!op)
{
if(L<=mid&&maxi(p<<1)>=v)res=query(p<<1,l,mid,L,R,v,op);
if(res==-1)res=query(p<<1|1,mid+1,r,L,R,v,op);
}
else
{
if(R>mid&&mini(p<<1|1)<=v)res=query(p<<1|1,mid+1,r,L,R,v,op);
if(res==-1)res=query(p<<1,l,mid,L,R,v,op);
}
//if((~res1)&&(~res2))return op?max(res1,res2):min(res1,res2);
//else return (~res1)?res1:res2;
return res;
}
}t;
int ans;
inline int parti(int *a,int l,int r)
{
int mid=l+r>>1,piv=a[l+r>>1];
// cout<<"parti "<<l<<" "<<r<<" "<<piv<<endl;;
for(int i=l,j=r,ii,jj;;)
{
ii=t.query(1,1,n,i,mid,piv,0);
jj=t.query(1,1,n,mid,j,piv,1);
// cout<<"ii jj "<<ii<<" "<<jj<<endl;
if(ii>=jj)return jj;
ans++;swap(a[ii],a[jj]);
t.change(1,1,n,ii,a[ii]);
t.change(1,1,n,jj,a[jj]);
i=ii,j=jj;
}
}
inline void quisort(int *a,int l,int r)
{
int p;
if(l&&r&&l<r)
{
p=parti(a,l,r);
//getchar();
quisort(a,l,p);
quisort(a,p+1,r);
}
}
int main()
{
int T;
scanf("%d",&T);
while(T--)
{
scanf("%d",&n);
for(int i=1;i<=n;i++)
scanf("%d",&a[i]);
t.build(1,1,n);
ans=0;
quisort(a,1,n);
printf("%d\n",ans);
}
return 0;
}
Details
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Test #1:
score: 100
Accepted
time: 1ms
memory: 8016kb
input:
3 3 3 2 1 5 2 4 5 3 1 10 7 2 4 6 1 9 10 8 5 3
output:
1 4 7
result:
ok 3 number(s): "1 4 7"
Test #2:
score: 0
Accepted
time: 44ms
memory: 7900kb
input:
100000 4 3 4 2 1 5 5 4 1 3 2 4 3 1 4 2 4 4 2 1 3 4 1 3 2 4 4 4 2 3 1 4 3 2 1 4 5 1 2 3 4 5 5 5 2 3 1 4 5 1 3 5 4 2 5 4 3 2 1 5 5 3 4 2 1 5 5 5 4 3 2 1 4 3 4 2 1 5 4 2 5 1 3 5 4 1 5 2 3 4 3 4 1 2 4 2 1 3 4 5 4 3 2 5 1 4 4 2 1 3 5 3 1 5 2 4 4 4 1 2 3 5 1 5 2 4 3 5 4 1 3 5 2 5 4 2 3 5 1 5 1 2 3 4 5 5 4...
output:
3 4 3 2 1 1 1 0 2 2 2 3 2 3 2 3 2 1 3 2 4 3 2 3 2 0 4 2 4 1 3 2 3 2 2 1 3 1 1 2 4 3 2 3 1 1 1 3 3 3 4 4 2 3 3 2 3 3 3 2 1 1 2 3 1 3 1 1 3 4 2 2 4 1 1 3 2 2 2 2 1 3 4 4 3 4 2 2 1 3 2 3 2 3 3 2 1 4 2 3 4 1 2 2 3 2 2 3 2 2 2 2 4 1 2 3 2 2 2 2 3 2 3 4 3 2 3 4 2 4 1 3 2 3 4 3 3 4 1 2 4 3 2 4 2 3 3 1 2 2 ...
result:
ok 100000 numbers
Test #3:
score: -100
Wrong Answer
time: 51ms
memory: 8040kb
input:
50000 10 3 1 2 10 6 8 5 4 7 9 10 8 3 9 2 10 4 5 1 7 6 9 6 8 4 9 5 7 1 3 2 9 6 7 9 3 8 5 2 1 4 10 7 10 1 2 6 5 3 9 4 8 10 1 10 4 3 2 9 7 8 5 6 9 1 5 3 4 9 6 7 2 8 10 4 7 2 8 3 6 9 5 10 1 9 6 4 9 1 8 5 2 3 7 10 5 1 7 8 10 3 9 6 2 4 9 4 8 6 3 9 7 5 2 1 9 9 1 7 6 2 3 8 5 4 10 5 7 2 1 4 3 6 8 9 10 10 9 7...
output:
8 8 8 8 9 5 3 8 8 9 7 8 7 9 8 11 6 8 8 7 7 11 7 6 11 8 3 6 8 6 6 7 10 4 8 6 6 8 5 6 7 6 7 5 5 8 9 5 9 10 6 7 8 9 4 9 6 7 8 8 9 7 5 7 6 6 10 9 8 6 4 8 6 10 4 9 9 6 9 6 7 7 7 9 6 6 9 8 7 9 9 5 6 8 8 8 8 8 6 4 8 8 5 8 8 8 9 8 8 7 8 7 6 10 9 5 7 7 6 5 5 6 8 9 5 6 7 8 6 7 9 6 7 9 7 7 6 8 9 9 7 7 9 7 8 6 ...
result:
wrong answer 11th numbers differ - expected: '9', found: '7'