Submission #377277

#	Submission time	Handle	Problem	Language	Result	Execution time	Memory
377277	2021-03-13T15:52:22 Z	YJU	Group Photo (JOI21_ho_t3)	C++14	100 / 100	582 ms	492 KB

Main

#include<bits/stdc++.h>
#pragma GCC optimize("unroll-loops,no-stack-protector,Ofast")
using namespace std;
typedef int ll;
typedef long double ld;
typedef pair<ll,ll> pll;
const ll MOD=1e9+7;
const ll MOD2=998244353;
const ll N=5e3+5;
const ld pi=acos(-1);
const ll INF=(1LL<<30);
#define SQ(i) ((i)*(i))
#define REP(i,n) for(ll i=0;i<n;i++)
#define REP1(i,n) for(ll i=1;i<=n;i++)
#define pb push_back
#define mp make_pair
#define X first
#define Y second
#define setp setprecision
#define lwb lower_bound
#define SZ(_a) (ll)_a.size()

ll bit[N];

ll n,x,h[N],dp[N];

void add(ll id,ll del){
	for(int i=id;i<N;i+=(i&-i)){
		bit[i]+=del;
	}
}

ll query(ll id){
	ll tmp=0;
	for(int i=id;i;i-=(i&-i)){
		tmp+=bit[i];
	}
	return tmp;
}

int main(){
	ios_base::sync_with_stdio(0);cin.tie(0);
	cin>>n;
	REP1(i,n)cin>>x,h[x]=i;
	REP1(i,n)dp[i]=INF;
	REP1(i,n)add(i,1);
	REP(i,n){
		ll sum=0;
		for(int j=i+1;j<=n;j++){
			sum+=query(h[j])-1-(j-i-1);
			add(h[j],1);
			dp[j]=min(dp[j],dp[i]+sum);
		}
		for(int j=i+1;j<=n;j++)add(h[j],-1);
		add(h[i+1],-1);
	} 
	cout<<dp[n]<<"\n";
	return 0;
}

Subtask #1
5.0 / 5.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	1 ms	364 KB	Output is correct
2	Correct	1 ms	364 KB	Output is correct
3	Correct	1 ms	364 KB	Output is correct
4	Correct	0 ms	364 KB	Output is correct
5	Correct	1 ms	364 KB	Output is correct
6	Correct	1 ms	364 KB	Output is correct
7	Correct	1 ms	364 KB	Output is correct
8	Correct	1 ms	364 KB	Output is correct
9	Correct	1 ms	364 KB	Output is correct
10	Correct	1 ms	364 KB	Output is correct

Subtask #2
7.0 / 7.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	1 ms	364 KB	Output is correct
2	Correct	1 ms	364 KB	Output is correct
3	Correct	1 ms	364 KB	Output is correct
4	Correct	0 ms	364 KB	Output is correct
5	Correct	1 ms	364 KB	Output is correct
6	Correct	1 ms	364 KB	Output is correct
7	Correct	1 ms	364 KB	Output is correct
8	Correct	1 ms	364 KB	Output is correct
9	Correct	1 ms	364 KB	Output is correct
10	Correct	1 ms	364 KB	Output is correct
11	Correct	1 ms	364 KB	Output is correct
12	Correct	1 ms	364 KB	Output is correct
13	Correct	0 ms	364 KB	Output is correct
14	Correct	1 ms	364 KB	Output is correct
15	Correct	1 ms	364 KB	Output is correct
16	Correct	1 ms	364 KB	Output is correct
17	Correct	1 ms	364 KB	Output is correct
18	Correct	1 ms	364 KB	Output is correct
19	Correct	1 ms	364 KB	Output is correct
20	Correct	1 ms	364 KB	Output is correct

Subtask #3
32.0 / 32.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	1 ms	364 KB	Output is correct
2	Correct	1 ms	364 KB	Output is correct
3	Correct	1 ms	364 KB	Output is correct
4	Correct	0 ms	364 KB	Output is correct
5	Correct	1 ms	364 KB	Output is correct
6	Correct	1 ms	364 KB	Output is correct
7	Correct	1 ms	364 KB	Output is correct
8	Correct	1 ms	364 KB	Output is correct
9	Correct	1 ms	364 KB	Output is correct
10	Correct	1 ms	364 KB	Output is correct
11	Correct	1 ms	364 KB	Output is correct
12	Correct	1 ms	364 KB	Output is correct
13	Correct	0 ms	364 KB	Output is correct
14	Correct	1 ms	364 KB	Output is correct
15	Correct	1 ms	364 KB	Output is correct
16	Correct	1 ms	364 KB	Output is correct
17	Correct	1 ms	364 KB	Output is correct
18	Correct	1 ms	364 KB	Output is correct
19	Correct	1 ms	364 KB	Output is correct
20	Correct	1 ms	364 KB	Output is correct
21	Correct	2 ms	364 KB	Output is correct
22	Correct	2 ms	364 KB	Output is correct
23	Correct	1 ms	364 KB	Output is correct
24	Correct	2 ms	364 KB	Output is correct
25	Correct	1 ms	364 KB	Output is correct
26	Correct	2 ms	364 KB	Output is correct
27	Correct	1 ms	364 KB	Output is correct
28	Correct	1 ms	364 KB	Output is correct
29	Correct	2 ms	364 KB	Output is correct
30	Correct	1 ms	364 KB	Output is correct

Subtask #4
20.0 / 20.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	1 ms	364 KB	Output is correct
2	Correct	1 ms	364 KB	Output is correct
3	Correct	1 ms	364 KB	Output is correct
4	Correct	0 ms	364 KB	Output is correct
5	Correct	1 ms	364 KB	Output is correct
6	Correct	1 ms	364 KB	Output is correct
7	Correct	1 ms	364 KB	Output is correct
8	Correct	1 ms	364 KB	Output is correct
9	Correct	1 ms	364 KB	Output is correct
10	Correct	1 ms	364 KB	Output is correct
11	Correct	1 ms	364 KB	Output is correct
12	Correct	1 ms	364 KB	Output is correct
13	Correct	0 ms	364 KB	Output is correct
14	Correct	1 ms	364 KB	Output is correct
15	Correct	1 ms	364 KB	Output is correct
16	Correct	1 ms	364 KB	Output is correct
17	Correct	1 ms	364 KB	Output is correct
18	Correct	1 ms	364 KB	Output is correct
19	Correct	1 ms	364 KB	Output is correct
20	Correct	1 ms	364 KB	Output is correct
21	Correct	2 ms	364 KB	Output is correct
22	Correct	2 ms	364 KB	Output is correct
23	Correct	1 ms	364 KB	Output is correct
24	Correct	2 ms	364 KB	Output is correct
25	Correct	1 ms	364 KB	Output is correct
26	Correct	2 ms	364 KB	Output is correct
27	Correct	1 ms	364 KB	Output is correct
28	Correct	1 ms	364 KB	Output is correct
29	Correct	2 ms	364 KB	Output is correct
30	Correct	1 ms	364 KB	Output is correct
31	Correct	16 ms	364 KB	Output is correct
32	Correct	15 ms	364 KB	Output is correct
33	Correct	16 ms	364 KB	Output is correct
34	Correct	16 ms	364 KB	Output is correct
35	Correct	15 ms	364 KB	Output is correct
36	Correct	15 ms	364 KB	Output is correct
37	Correct	15 ms	364 KB	Output is correct
38	Correct	15 ms	364 KB	Output is correct
39	Correct	16 ms	364 KB	Output is correct
40	Correct	15 ms	364 KB	Output is correct

Subtask #5
36.0 / 36.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	1 ms	364 KB	Output is correct
2	Correct	1 ms	364 KB	Output is correct
3	Correct	1 ms	364 KB	Output is correct
4	Correct	0 ms	364 KB	Output is correct
5	Correct	1 ms	364 KB	Output is correct
6	Correct	1 ms	364 KB	Output is correct
7	Correct	1 ms	364 KB	Output is correct
8	Correct	1 ms	364 KB	Output is correct
9	Correct	1 ms	364 KB	Output is correct
10	Correct	1 ms	364 KB	Output is correct
11	Correct	1 ms	364 KB	Output is correct
12	Correct	1 ms	364 KB	Output is correct
13	Correct	0 ms	364 KB	Output is correct
14	Correct	1 ms	364 KB	Output is correct
15	Correct	1 ms	364 KB	Output is correct
16	Correct	1 ms	364 KB	Output is correct
17	Correct	1 ms	364 KB	Output is correct
18	Correct	1 ms	364 KB	Output is correct
19	Correct	1 ms	364 KB	Output is correct
20	Correct	1 ms	364 KB	Output is correct
21	Correct	2 ms	364 KB	Output is correct
22	Correct	2 ms	364 KB	Output is correct
23	Correct	1 ms	364 KB	Output is correct
24	Correct	2 ms	364 KB	Output is correct
25	Correct	1 ms	364 KB	Output is correct
26	Correct	2 ms	364 KB	Output is correct
27	Correct	1 ms	364 KB	Output is correct
28	Correct	1 ms	364 KB	Output is correct
29	Correct	2 ms	364 KB	Output is correct
30	Correct	1 ms	364 KB	Output is correct
31	Correct	16 ms	364 KB	Output is correct
32	Correct	15 ms	364 KB	Output is correct
33	Correct	16 ms	364 KB	Output is correct
34	Correct	16 ms	364 KB	Output is correct
35	Correct	15 ms	364 KB	Output is correct
36	Correct	15 ms	364 KB	Output is correct
37	Correct	15 ms	364 KB	Output is correct
38	Correct	15 ms	364 KB	Output is correct
39	Correct	16 ms	364 KB	Output is correct
40	Correct	15 ms	364 KB	Output is correct
41	Correct	570 ms	456 KB	Output is correct
42	Correct	582 ms	364 KB	Output is correct
43	Correct	563 ms	492 KB	Output is correct
44	Correct	571 ms	364 KB	Output is correct
45	Correct	580 ms	456 KB	Output is correct
46	Correct	579 ms	364 KB	Output is correct
47	Correct	568 ms	492 KB	Output is correct
48	Correct	576 ms	492 KB	Output is correct
49	Correct	571 ms	364 KB	Output is correct
50	Correct	571 ms	364 KB	Output is correct
51	Correct	566 ms	364 KB	Output is correct
52	Correct	570 ms	492 KB	Output is correct
53	Correct	573 ms	456 KB	Output is correct
54	Correct	567 ms	364 KB	Output is correct
55	Correct	574 ms	492 KB	Output is correct

Submission #377277

Compilation message

Subtask #1 5.0 / 5.0

Subtask #2 7.0 / 7.0

Subtask #3 32.0 / 32.0

Subtask #4 20.0 / 20.0

Subtask #5 36.0 / 36.0

Subtask #1
5.0 / 5.0

Subtask #2
7.0 / 7.0

Subtask #3
32.0 / 32.0

Subtask #4
20.0 / 20.0

Subtask #5
36.0 / 36.0