oj.uz

Submission #856889

# Submission time Handle Problem Language Result Execution time Memory
856889 2023-10-04T19:04:02 Z StefanSebez Group Photo (JOI21_ho_t3) C++14
100 / 100
 876 ms 856 KB 
#include <bits/stdc++.h>
using namespace std;
#define int long long
const int N=5050;
const int inf=1e17;
int n,T[N];
int a[N],ind[N],dp[N];
void Update(int i,int qval){
	while(i<=n){
		T[i]+=qval;
		i+=i&(-i);
	}
}
int Get(int i){
	int sum=0;
	while(i>=1){
		sum+=T[i];
		i-=i&(-i);
	}
	return sum;
}
/*int lc[2*N],rc[2*N],sum[2*N],nc,root;
void Update(int &c,int ss,int se,int qind,int qval){
	if(!c) c=++nc;
	if(ss==se) {sum[c]=qval;return;}
	int mid=(ss+se)/2;
	if(qind<=mid) Update(lc[c],ss,mid,qind,qval);
	else Update(rc[c],mid+1,se,qind,qval);
	sum[c]=sum[lc[c]]+sum[rc[c]];
}
int Get(int c,int ss,int se,int qs,int qe){
	if(se<ss) return 0;
	if(qs<=ss && se<=qe) return sum[c];
	else if(qe<ss || se<qs) return 0;
	int mid=(ss+se)/2;
	return Get(lc[c],ss,mid,qs,qe)+Get(rc[c],mid+1,se,qs,qe);
}*/
signed main()
{
    cin>>n;
    for(int i=1;i<=n;i++){
		cin>>a[i];
		ind[a[i]]=i;
	}
	for(int i=1;i<=n;i++) dp[i]=inf;
    dp[n+1]=0;
    for(int i=n;i>=1;i--){
		int s=0,b[n+1]={0};
		for(int j=i;j<=n;j++) Update(ind[j],1);
		for(int j=i;j<=n;j++) b[j]=Get(ind[j])-1;
		for(int j=i;j<=n;j++) Update(ind[j],-1);
		for(int j=i;j<=n;j++){
			int k=ind[j],x=Get(n)-Get(k-1);
			s-=x;
			s+=b[j];
			dp[i]=min(dp[i],dp[j+1]+s);
			Update(k,1);
		}
		for(int j=i;j<=n;j++) Update(ind[j],-1);
		/*for(int j=i;j<=n;j++) Update(root,1,n,ind[j],1);
		for(int j=i;j<=n;j++) b[j]=Get(root,1,n,1,ind[j])-1;
		for(int j=i;j<=n;j++) Update(root,1,n,ind[j],0);
		for(int j=i;j<=n;j++){
			int k=ind[j],x=Get(root,1,n,k,n);
			s-=x;
			s+=b[j];
			dp[i]=min(dp[i],dp[j+1]+s);
			Update(root,1,n,k,1);
		}
		for(int j=i;j<=n;j++) Update(root,1,n,ind[j],0);*/
	}
	cout<<dp[1]<<endl;
    return 0;
}

Subtask #1
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 0 ms 600 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 0 ms 348 KB Output is correct
7 Correct 0 ms 348 KB Output is correct
8 Correct 0 ms 348 KB Output is correct
9 Correct 1 ms 344 KB Output is correct
10 Correct 1 ms 348 KB Output is correct

Subtask #2
7.0 / 7.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 0 ms 600 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 0 ms 348 KB Output is correct
7 Correct 0 ms 348 KB Output is correct
8 Correct 0 ms 348 KB Output is correct
9 Correct 1 ms 344 KB Output is correct
10 Correct 1 ms 348 KB Output is correct
11 Correct 0 ms 348 KB Output is correct
12 Correct 0 ms 348 KB Output is correct
13 Correct 0 ms 348 KB Output is correct
14 Correct 0 ms 348 KB Output is correct
15 Correct 0 ms 348 KB Output is correct
16 Correct 0 ms 348 KB Output is correct
17 Correct 0 ms 348 KB Output is correct
18 Correct 1 ms 348 KB Output is correct
19 Correct 0 ms 348 KB Output is correct
20 Correct 0 ms 348 KB Output is correct

Subtask #3
32.0 / 32.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 0 ms 600 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 0 ms 348 KB Output is correct
7 Correct 0 ms 348 KB Output is correct
8 Correct 0 ms 348 KB Output is correct
9 Correct 1 ms 344 KB Output is correct
10 Correct 1 ms 348 KB Output is correct
11 Correct 0 ms 348 KB Output is correct
12 Correct 0 ms 348 KB Output is correct
13 Correct 0 ms 348 KB Output is correct
14 Correct 0 ms 348 KB Output is correct
15 Correct 0 ms 348 KB Output is correct
16 Correct 0 ms 348 KB Output is correct
17 Correct 0 ms 348 KB Output is correct
18 Correct 1 ms 348 KB Output is correct
19 Correct 0 ms 348 KB Output is correct
20 Correct 0 ms 348 KB Output is correct
21 Correct 1 ms 348 KB Output is correct
22 Correct 1 ms 348 KB Output is correct
23 Correct 1 ms 348 KB Output is correct
24 Correct 1 ms 348 KB Output is correct
25 Correct 1 ms 348 KB Output is correct
26 Correct 1 ms 348 KB Output is correct
27 Correct 1 ms 348 KB Output is correct
28 Correct 1 ms 348 KB Output is correct
29 Correct 1 ms 348 KB Output is correct
30 Correct 1 ms 348 KB Output is correct

Subtask #4
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 0 ms 600 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 0 ms 348 KB Output is correct
7 Correct 0 ms 348 KB Output is correct
8 Correct 0 ms 348 KB Output is correct
9 Correct 1 ms 344 KB Output is correct
10 Correct 1 ms 348 KB Output is correct
11 Correct 0 ms 348 KB Output is correct
12 Correct 0 ms 348 KB Output is correct
13 Correct 0 ms 348 KB Output is correct
14 Correct 0 ms 348 KB Output is correct
15 Correct 0 ms 348 KB Output is correct
16 Correct 0 ms 348 KB Output is correct
17 Correct 0 ms 348 KB Output is correct
18 Correct 1 ms 348 KB Output is correct
19 Correct 0 ms 348 KB Output is correct
20 Correct 0 ms 348 KB Output is correct
21 Correct 1 ms 348 KB Output is correct
22 Correct 1 ms 348 KB Output is correct
23 Correct 1 ms 348 KB Output is correct
24 Correct 1 ms 348 KB Output is correct
25 Correct 1 ms 348 KB Output is correct
26 Correct 1 ms 348 KB Output is correct
27 Correct 1 ms 348 KB Output is correct
28 Correct 1 ms 348 KB Output is correct
29 Correct 1 ms 348 KB Output is correct
30 Correct 1 ms 348 KB Output is correct
31 Correct 13 ms 344 KB Output is correct
32 Correct 12 ms 476 KB Output is correct
33 Correct 11 ms 344 KB Output is correct
34 Correct 11 ms 348 KB Output is correct
35 Correct 11 ms 472 KB Output is correct
36 Correct 11 ms 348 KB Output is correct
37 Correct 13 ms 348 KB Output is correct
38 Correct 11 ms 348 KB Output is correct
39 Correct 11 ms 724 KB Output is correct
40 Correct 11 ms 472 KB Output is correct

Subtask #5
36.0 / 36.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 0 ms 600 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 0 ms 348 KB Output is correct
7 Correct 0 ms 348 KB Output is correct
8 Correct 0 ms 348 KB Output is correct
9 Correct 1 ms 344 KB Output is correct
10 Correct 1 ms 348 KB Output is correct
11 Correct 0 ms 348 KB Output is correct
12 Correct 0 ms 348 KB Output is correct
13 Correct 0 ms 348 KB Output is correct
14 Correct 0 ms 348 KB Output is correct
15 Correct 0 ms 348 KB Output is correct
16 Correct 0 ms 348 KB Output is correct
17 Correct 0 ms 348 KB Output is correct
18 Correct 1 ms 348 KB Output is correct
19 Correct 0 ms 348 KB Output is correct
20 Correct 0 ms 348 KB Output is correct
21 Correct 1 ms 348 KB Output is correct
22 Correct 1 ms 348 KB Output is correct
23 Correct 1 ms 348 KB Output is correct
24 Correct 1 ms 348 KB Output is correct
25 Correct 1 ms 348 KB Output is correct
26 Correct 1 ms 348 KB Output is correct
27 Correct 1 ms 348 KB Output is correct
28 Correct 1 ms 348 KB Output is correct
29 Correct 1 ms 348 KB Output is correct
30 Correct 1 ms 348 KB Output is correct
31 Correct 13 ms 344 KB Output is correct
32 Correct 12 ms 476 KB Output is correct
33 Correct 11 ms 344 KB Output is correct
34 Correct 11 ms 348 KB Output is correct
35 Correct 11 ms 472 KB Output is correct
36 Correct 11 ms 348 KB Output is correct
37 Correct 13 ms 348 KB Output is correct
38 Correct 11 ms 348 KB Output is correct
39 Correct 11 ms 724 KB Output is correct
40 Correct 11 ms 472 KB Output is correct
41 Correct 871 ms 856 KB Output is correct
42 Correct 874 ms 628 KB Output is correct
43 Correct 870 ms 624 KB Output is correct
44 Correct 872 ms 628 KB Output is correct
45 Correct 870 ms 604 KB Output is correct
46 Correct 863 ms 628 KB Output is correct
47 Correct 862 ms 640 KB Output is correct
48 Correct 876 ms 624 KB Output is correct
49 Correct 868 ms 852 KB Output is correct
50 Correct 864 ms 628 KB Output is correct
51 Correct 862 ms 848 KB Output is correct
52 Correct 859 ms 852 KB Output is correct
53 Correct 860 ms 644 KB Output is correct
54 Correct 876 ms 600 KB Output is correct
55 Correct 865 ms 624 KB Output is correct