Submission #536070

#	Submission time	Handle	Problem	Language	Result	Execution time	Memory
536070	2022-03-12T09:19:45 Z	victor_gao	Group Photo (JOI21_ho_t3)	C++17	44 / 100	5000 ms	392 KB

Main

#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';
		for (int j=i+1;j<=n;j++){
			int tans=0;
			vector<pii>bk;
			for (int k=j;k>i;k--){
				int np=bit.query(pos[k]);
				tans+=abs(np-(i+j-k+1));
				bit.change(1,1);
				bit.change(pos[k],-1);
				bk.push_back({1,-1});
				bk.push_back({pos[k],1});
			}
			dp[j]=min(dp[j],dp[i]+tans);
			for (auto k:bk){
				bit.change(k.x,k.y);
			}
		}
	//	bit2.reset();
	//	cout<<dp[i]<<"\n";
	}
	cout<<dp[n]<<'\n';
}

Subtask #1
5.0 / 5.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	1 ms	340 KB	Output is correct
2	Correct	1 ms	340 KB	Output is correct
3	Correct	1 ms	340 KB	Output is correct
4	Correct	1 ms	340 KB	Output is correct
5	Correct	1 ms	328 KB	Output is correct
6	Correct	1 ms	340 KB	Output is correct
7	Correct	1 ms	340 KB	Output is correct
8	Correct	1 ms	340 KB	Output is correct
9	Correct	1 ms	328 KB	Output is correct
10	Correct	1 ms	340 KB	Output is correct

Subtask #2
7.0 / 7.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	1 ms	340 KB	Output is correct
2	Correct	1 ms	340 KB	Output is correct
3	Correct	1 ms	340 KB	Output is correct
4	Correct	1 ms	340 KB	Output is correct
5	Correct	1 ms	328 KB	Output is correct
6	Correct	1 ms	340 KB	Output is correct
7	Correct	1 ms	340 KB	Output is correct
8	Correct	1 ms	340 KB	Output is correct
9	Correct	1 ms	328 KB	Output is correct
10	Correct	1 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	1 ms	340 KB	Output is correct
14	Correct	1 ms	340 KB	Output is correct
15	Correct	1 ms	340 KB	Output is correct
16	Correct	1 ms	340 KB	Output is correct
17	Correct	1 ms	340 KB	Output is correct
18	Correct	1 ms	340 KB	Output is correct
19	Correct	1 ms	328 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	1 ms	340 KB	Output is correct
2	Correct	1 ms	340 KB	Output is correct
3	Correct	1 ms	340 KB	Output is correct
4	Correct	1 ms	340 KB	Output is correct
5	Correct	1 ms	328 KB	Output is correct
6	Correct	1 ms	340 KB	Output is correct
7	Correct	1 ms	340 KB	Output is correct
8	Correct	1 ms	340 KB	Output is correct
9	Correct	1 ms	328 KB	Output is correct
10	Correct	1 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	1 ms	340 KB	Output is correct
14	Correct	1 ms	340 KB	Output is correct
15	Correct	1 ms	340 KB	Output is correct
16	Correct	1 ms	340 KB	Output is correct
17	Correct	1 ms	340 KB	Output is correct
18	Correct	1 ms	340 KB	Output is correct
19	Correct	1 ms	328 KB	Output is correct
20	Correct	1 ms	340 KB	Output is correct
21	Correct	70 ms	344 KB	Output is correct
22	Correct	82 ms	344 KB	Output is correct
23	Correct	75 ms	344 KB	Output is correct
24	Correct	80 ms	368 KB	Output is correct
25	Correct	73 ms	352 KB	Output is correct
26	Correct	75 ms	340 KB	Output is correct
27	Correct	73 ms	340 KB	Output is correct
28	Correct	75 ms	340 KB	Output is correct
29	Correct	80 ms	344 KB	Output is correct
30	Correct	77 ms	348 KB	Output is correct

Subtask #4
0 / 20.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	1 ms	340 KB	Output is correct
2	Correct	1 ms	340 KB	Output is correct
3	Correct	1 ms	340 KB	Output is correct
4	Correct	1 ms	340 KB	Output is correct
5	Correct	1 ms	328 KB	Output is correct
6	Correct	1 ms	340 KB	Output is correct
7	Correct	1 ms	340 KB	Output is correct
8	Correct	1 ms	340 KB	Output is correct
9	Correct	1 ms	328 KB	Output is correct
10	Correct	1 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	1 ms	340 KB	Output is correct
14	Correct	1 ms	340 KB	Output is correct
15	Correct	1 ms	340 KB	Output is correct
16	Correct	1 ms	340 KB	Output is correct
17	Correct	1 ms	340 KB	Output is correct
18	Correct	1 ms	340 KB	Output is correct
19	Correct	1 ms	328 KB	Output is correct
20	Correct	1 ms	340 KB	Output is correct
21	Correct	70 ms	344 KB	Output is correct
22	Correct	82 ms	344 KB	Output is correct
23	Correct	75 ms	344 KB	Output is correct
24	Correct	80 ms	368 KB	Output is correct
25	Correct	73 ms	352 KB	Output is correct
26	Correct	75 ms	340 KB	Output is correct
27	Correct	73 ms	340 KB	Output is correct
28	Correct	75 ms	340 KB	Output is correct
29	Correct	80 ms	344 KB	Output is correct
30	Correct	77 ms	348 KB	Output is correct
31	Execution timed out	5100 ms	392 KB	Time limit exceeded
32	Halted	0 ms	0 KB	-

Subtask #5
0 / 36.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	1 ms	340 KB	Output is correct
2	Correct	1 ms	340 KB	Output is correct
3	Correct	1 ms	340 KB	Output is correct
4	Correct	1 ms	340 KB	Output is correct
5	Correct	1 ms	328 KB	Output is correct
6	Correct	1 ms	340 KB	Output is correct
7	Correct	1 ms	340 KB	Output is correct
8	Correct	1 ms	340 KB	Output is correct
9	Correct	1 ms	328 KB	Output is correct
10	Correct	1 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	1 ms	340 KB	Output is correct
14	Correct	1 ms	340 KB	Output is correct
15	Correct	1 ms	340 KB	Output is correct
16	Correct	1 ms	340 KB	Output is correct
17	Correct	1 ms	340 KB	Output is correct
18	Correct	1 ms	340 KB	Output is correct
19	Correct	1 ms	328 KB	Output is correct
20	Correct	1 ms	340 KB	Output is correct
21	Correct	70 ms	344 KB	Output is correct
22	Correct	82 ms	344 KB	Output is correct
23	Correct	75 ms	344 KB	Output is correct
24	Correct	80 ms	368 KB	Output is correct
25	Correct	73 ms	352 KB	Output is correct
26	Correct	75 ms	340 KB	Output is correct
27	Correct	73 ms	340 KB	Output is correct
28	Correct	75 ms	340 KB	Output is correct
29	Correct	80 ms	344 KB	Output is correct
30	Correct	77 ms	348 KB	Output is correct
31	Execution timed out	5100 ms	392 KB	Time limit exceeded
32	Halted	0 ms	0 KB	-

Submission #536070

Compilation message

Subtask #1 5.0 / 5.0

Subtask #2 7.0 / 7.0

Subtask #3 32.0 / 32.0

Subtask #4 0 / 20.0

Subtask #5 0 / 36.0

Subtask #1
5.0 / 5.0

Subtask #2
7.0 / 7.0

Subtask #3
32.0 / 32.0

Subtask #4
0 / 20.0

Subtask #5
0 / 36.0