oj.uz

Submission #536100

# Submission time Handle Problem Language Result Execution time Memory
536100 2022-03-12T11:10:15 Z victor_gao Group Photo (JOI21_ho_t3) C++17
100 / 100
 1148 ms 732 KB 
//#pragma GCC optimize("Ofast,unroll-loops,O3")
//#pragma GCC target("avx,avx2,sse,sse2,sse3,ssse3,sse4,popcnt,abm,mmx,fma,tune=native")
#include<bits/stdc++.h>
//#include<bits/extc++.h>
//#pragma pack(1)
#define fast ios::sync_with_stdio(0); cin.tie(0);
#define pii pair<int,int>
#define x first
#define y second
#define N 5015 
using namespace std;
//using namespace __gnu_pbds;
mt19937 rng(chrono::steady_clock::now().time_since_epoch().count());
//typedef tree<int, null_type,less_equal<int>, rb_tree_tag,tree_order_statistics_node_update> order_multiset;
//typedef tree<int, null_type,less<int>, rb_tree_tag,tree_order_statistics_node_update> order_set;
int dp[N],h[N],pos[N],d[N],n;
struct BIT{
	int arr[N];
	int lowbit(int x){
		return x&-x;
	}
	void reset(){
		for (int i=0;i<=n;i++) arr[i]=0;
	}
	void change(int p,int v){
		for (;p<=n;p+=lowbit(p)){
			arr[p]+=v;
		}
	}
	int query(int x){
		int ans=0;
		for (;x>0;x-=lowbit(x)){
			ans+=arr[x];
		}
		return ans;
	}
}bit,bit2;
signed main(){
	fast
	cin>>n;
	for (int i=1;i<=n;i++){
		cin>>h[i];
		pos[h[i]]=i;
		dp[i]=1e9;
	}
	for (int i=1;i<=n;i++) bit.change(i,1);
	for (int i=0;i<=n;i++){
		if (i){
			bit.change(1,1);
			bit.change(pos[i],-1);
		}
	//	for (int j=1;j<=n;j++) cout<<bit.query(j)<<' ';
	//	cout<<'\n';
		int tans=0;
		vector<pii>bk;
		for (int j=i+1;j<=n;j++){
			int np=bit.query(pos[j]);
			tans+=abs(np-(i+1));
			tans-=2*(j-i-1-bit2.query(pos[j]));
			bit.change(1,1);
			bit.change(pos[j],-1);
			bit2.change(pos[j],1);
			bk.push_back({1,-1});
			bk.push_back({pos[j],1});
			dp[j]=min(dp[j],dp[i]+tans);
			//cout<<i+1<<" ~ "<<j<<" -> "<<dp[i]<<" "<<tans<<'\n';
		}
		bit2.reset();
		for (auto j:bk) bit.change(j.x,j.y);
	//	cout<<dp[i]<<"\n";
	}
	cout<<dp[n]<<'\n';
}

Subtask #1
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 340 KB Output is correct
2 Correct 0 ms 340 KB Output is correct
3 Correct 0 ms 340 KB Output is correct
4 Correct 0 ms 340 KB Output is correct
5 Correct 0 ms 340 KB Output is correct
6 Correct 0 ms 340 KB Output is correct
7 Correct 1 ms 340 KB Output is correct
8 Correct 0 ms 340 KB Output is correct
9 Correct 0 ms 340 KB Output is correct
10 Correct 0 ms 340 KB Output is correct

Subtask #2
7.0 / 7.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 340 KB Output is correct
2 Correct 0 ms 340 KB Output is correct
3 Correct 0 ms 340 KB Output is correct
4 Correct 0 ms 340 KB Output is correct
5 Correct 0 ms 340 KB Output is correct
6 Correct 0 ms 340 KB Output is correct
7 Correct 1 ms 340 KB Output is correct
8 Correct 0 ms 340 KB Output is correct
9 Correct 0 ms 340 KB Output is correct
10 Correct 0 ms 340 KB Output is correct
11 Correct 1 ms 340 KB Output is correct
12 Correct 1 ms 340 KB Output is correct
13 Correct 0 ms 340 KB Output is correct
14 Correct 0 ms 340 KB Output is correct
15 Correct 0 ms 340 KB Output is correct
16 Correct 0 ms 340 KB Output is correct
17 Correct 0 ms 340 KB Output is correct
18 Correct 0 ms 340 KB Output is correct
19 Correct 0 ms 340 KB Output is correct
20 Correct 1 ms 340 KB Output is correct

Subtask #3
32.0 / 32.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 340 KB Output is correct
2 Correct 0 ms 340 KB Output is correct
3 Correct 0 ms 340 KB Output is correct
4 Correct 0 ms 340 KB Output is correct
5 Correct 0 ms 340 KB Output is correct
6 Correct 0 ms 340 KB Output is correct
7 Correct 1 ms 340 KB Output is correct
8 Correct 0 ms 340 KB Output is correct
9 Correct 0 ms 340 KB Output is correct
10 Correct 0 ms 340 KB Output is correct
11 Correct 1 ms 340 KB Output is correct
12 Correct 1 ms 340 KB Output is correct
13 Correct 0 ms 340 KB Output is correct
14 Correct 0 ms 340 KB Output is correct
15 Correct 0 ms 340 KB Output is correct
16 Correct 0 ms 340 KB Output is correct
17 Correct 0 ms 340 KB Output is correct
18 Correct 0 ms 340 KB Output is correct
19 Correct 0 ms 340 KB Output is correct
20 Correct 1 ms 340 KB Output is correct
21 Correct 1 ms 340 KB Output is correct
22 Correct 2 ms 340 KB Output is correct
23 Correct 2 ms 340 KB Output is correct
24 Correct 2 ms 340 KB Output is correct
25 Correct 2 ms 340 KB Output is correct
26 Correct 2 ms 340 KB Output is correct
27 Correct 2 ms 340 KB Output is correct
28 Correct 2 ms 340 KB Output is correct
29 Correct 2 ms 340 KB Output is correct
30 Correct 2 ms 340 KB Output is correct

Subtask #4
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 340 KB Output is correct
2 Correct 0 ms 340 KB Output is correct
3 Correct 0 ms 340 KB Output is correct
4 Correct 0 ms 340 KB Output is correct
5 Correct 0 ms 340 KB Output is correct
6 Correct 0 ms 340 KB Output is correct
7 Correct 1 ms 340 KB Output is correct
8 Correct 0 ms 340 KB Output is correct
9 Correct 0 ms 340 KB Output is correct
10 Correct 0 ms 340 KB Output is correct
11 Correct 1 ms 340 KB Output is correct
12 Correct 1 ms 340 KB Output is correct
13 Correct 0 ms 340 KB Output is correct
14 Correct 0 ms 340 KB Output is correct
15 Correct 0 ms 340 KB Output is correct
16 Correct 0 ms 340 KB Output is correct
17 Correct 0 ms 340 KB Output is correct
18 Correct 0 ms 340 KB Output is correct
19 Correct 0 ms 340 KB Output is correct
20 Correct 1 ms 340 KB Output is correct
21 Correct 1 ms 340 KB Output is correct
22 Correct 2 ms 340 KB Output is correct
23 Correct 2 ms 340 KB Output is correct
24 Correct 2 ms 340 KB Output is correct
25 Correct 2 ms 340 KB Output is correct
26 Correct 2 ms 340 KB Output is correct
27 Correct 2 ms 340 KB Output is correct
28 Correct 2 ms 340 KB Output is correct
29 Correct 2 ms 340 KB Output is correct
30 Correct 2 ms 340 KB Output is correct
31 Correct 24 ms 340 KB Output is correct
32 Correct 25 ms 340 KB Output is correct
33 Correct 25 ms 340 KB Output is correct
34 Correct 23 ms 340 KB Output is correct
35 Correct 25 ms 392 KB Output is correct
36 Correct 26 ms 340 KB Output is correct
37 Correct 23 ms 340 KB Output is correct
38 Correct 23 ms 332 KB Output is correct
39 Correct 25 ms 340 KB Output is correct
40 Correct 24 ms 396 KB Output is correct

Subtask #5
36.0 / 36.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 340 KB Output is correct
2 Correct 0 ms 340 KB Output is correct
3 Correct 0 ms 340 KB Output is correct
4 Correct 0 ms 340 KB Output is correct
5 Correct 0 ms 340 KB Output is correct
6 Correct 0 ms 340 KB Output is correct
7 Correct 1 ms 340 KB Output is correct
8 Correct 0 ms 340 KB Output is correct
9 Correct 0 ms 340 KB Output is correct
10 Correct 0 ms 340 KB Output is correct
11 Correct 1 ms 340 KB Output is correct
12 Correct 1 ms 340 KB Output is correct
13 Correct 0 ms 340 KB Output is correct
14 Correct 0 ms 340 KB Output is correct
15 Correct 0 ms 340 KB Output is correct
16 Correct 0 ms 340 KB Output is correct
17 Correct 0 ms 340 KB Output is correct
18 Correct 0 ms 340 KB Output is correct
19 Correct 0 ms 340 KB Output is correct
20 Correct 1 ms 340 KB Output is correct
21 Correct 1 ms 340 KB Output is correct
22 Correct 2 ms 340 KB Output is correct
23 Correct 2 ms 340 KB Output is correct
24 Correct 2 ms 340 KB Output is correct
25 Correct 2 ms 340 KB Output is correct
26 Correct 2 ms 340 KB Output is correct
27 Correct 2 ms 340 KB Output is correct
28 Correct 2 ms 340 KB Output is correct
29 Correct 2 ms 340 KB Output is correct
30 Correct 2 ms 340 KB Output is correct
31 Correct 24 ms 340 KB Output is correct
32 Correct 25 ms 340 KB Output is correct
33 Correct 25 ms 340 KB Output is correct
34 Correct 23 ms 340 KB Output is correct
35 Correct 25 ms 392 KB Output is correct
36 Correct 26 ms 340 KB Output is correct
37 Correct 23 ms 340 KB Output is correct
38 Correct 23 ms 332 KB Output is correct
39 Correct 25 ms 340 KB Output is correct
40 Correct 24 ms 396 KB Output is correct
41 Correct 1136 ms 676 KB Output is correct
42 Correct 1133 ms 644 KB Output is correct
43 Correct 1135 ms 644 KB Output is correct
44 Correct 1148 ms 732 KB Output is correct
45 Correct 1129 ms 672 KB Output is correct
46 Correct 1143 ms 660 KB Output is correct
47 Correct 1137 ms 656 KB Output is correct
48 Correct 1142 ms 652 KB Output is correct
49 Correct 1131 ms 648 KB Output is correct
50 Correct 1145 ms 648 KB Output is correct
51 Correct 1133 ms 668 KB Output is correct
52 Correct 1120 ms 648 KB Output is correct
53 Correct 1133 ms 644 KB Output is correct
54 Correct 1144 ms 716 KB Output is correct
55 Correct 1128 ms 644 KB Output is correct