답안 #891816

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
891816	2023-12-24T06:13:41 Z	LCJLY	Group Photo (JOI21_ho_t3)	C++14	100 / 100	575 ms	370656 KB

Main

#include <bits/stdc++.h>
using namespace std;

#define int long long
#define ld long double
#define show(x,y) cout << y << " " << #x << endl;
#define show2(x,y,i,j) cout << y << " " << #x << "  " << j << " " << #i << endl;
#define show3(x,y,i,j,p,q) cout << y << " " << #x << "  " << j << " " << #i << "  " << q << " " << #p << endl; 
#define show4(x,y) for(auto it:x) cout << it << " "; cout << #y << endl;
typedef pair<int,int>pii;
typedef pair<pii,pii>pi2;

int prefix[5005][5005]; //pos val
int arr[5005];
int pos[5005];
int n=0;

int query(int l, int r, int val, int val2){
	if(val2<val) return 0;
	if(r<l) return 0; 
	int hold= prefix[r][val2]-prefix[r][val-1]-prefix[l-1][val2]+prefix[l-1][val-1];
	return hold;
}

int memo[5005];
int cost[5005][5005];

int dp(int index){
	if(index==n+1) return 0;
	if(memo[index]!=-1) return memo[index];
	int ans=INT_MAX;
	
	for(int x=index;x<=n;x++){
		
		int add=cost[index][x];
		int take=dp(x+1);
		ans=min(ans,take+add);
	}
	return memo[index]=ans;
}

void solve(){
	cin >> n;
	
	for(int x=1;x<=n;x++){
		cin >> arr[x];
		prefix[x][arr[x]]=1;
		pos[arr[x]]=x;
	}
	
	for(int x=1;x<=n;x++){
		for(int y=1;y<=n;y++){
			prefix[x][y]+=prefix[x-1][y]+prefix[x][y-1]-prefix[x-1][y-1];
		}
	}
	
	for(int x=n;x>=1;x--){
		int counter=0;
		for(int y=x;y>=1;y--){
			counter+=query(1,pos[y],x+1,n);
			counter+=query(pos[y]+1,n,y+1,x);
			cost[y][x]=counter;
			//show3(y,y,x,x,counter,counter);
		}
	}
	
	memset(memo,-1,sizeof(memo));
	cout << dp(1);
	
}

int32_t main(){										
	ios::sync_with_stdio(0);	
	cin.tie(0);
	//freopen("in.txt", "r", stdin);
	int t=1;
	//cin >> t;
	while(t--){
		solve();
	}	
}

Subtask #1
5.0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	1 ms	2392 KB	Output is correct
2	Correct	0 ms	2396 KB	Output is correct
3	Correct	1 ms	4444 KB	Output is correct
4	Correct	1 ms	4444 KB	Output is correct
5	Correct	1 ms	4444 KB	Output is correct
6	Correct	1 ms	4444 KB	Output is correct
7	Correct	1 ms	4444 KB	Output is correct
8	Correct	1 ms	4444 KB	Output is correct
9	Correct	1 ms	4508 KB	Output is correct
10	Correct	1 ms	4444 KB	Output is correct

Subtask #2
7.0 / 7.0

#	결과	실행 시간	메모리	Grader output
1	Correct	1 ms	2392 KB	Output is correct
2	Correct	0 ms	2396 KB	Output is correct
3	Correct	1 ms	4444 KB	Output is correct
4	Correct	1 ms	4444 KB	Output is correct
5	Correct	1 ms	4444 KB	Output is correct
6	Correct	1 ms	4444 KB	Output is correct
7	Correct	1 ms	4444 KB	Output is correct
8	Correct	1 ms	4444 KB	Output is correct
9	Correct	1 ms	4508 KB	Output is correct
10	Correct	1 ms	4444 KB	Output is correct
11	Correct	1 ms	4444 KB	Output is correct
12	Correct	1 ms	4444 KB	Output is correct
13	Correct	1 ms	4444 KB	Output is correct
14	Correct	1 ms	4440 KB	Output is correct
15	Correct	1 ms	4444 KB	Output is correct
16	Correct	1 ms	4444 KB	Output is correct
17	Correct	1 ms	4444 KB	Output is correct
18	Correct	1 ms	4444 KB	Output is correct
19	Correct	1 ms	4444 KB	Output is correct
20	Correct	1 ms	4444 KB	Output is correct

Subtask #3
32.0 / 32.0

#	결과	실행 시간	메모리	Grader output
1	Correct	1 ms	2392 KB	Output is correct
2	Correct	0 ms	2396 KB	Output is correct
3	Correct	1 ms	4444 KB	Output is correct
4	Correct	1 ms	4444 KB	Output is correct
5	Correct	1 ms	4444 KB	Output is correct
6	Correct	1 ms	4444 KB	Output is correct
7	Correct	1 ms	4444 KB	Output is correct
8	Correct	1 ms	4444 KB	Output is correct
9	Correct	1 ms	4508 KB	Output is correct
10	Correct	1 ms	4444 KB	Output is correct
11	Correct	1 ms	4444 KB	Output is correct
12	Correct	1 ms	4444 KB	Output is correct
13	Correct	1 ms	4444 KB	Output is correct
14	Correct	1 ms	4440 KB	Output is correct
15	Correct	1 ms	4444 KB	Output is correct
16	Correct	1 ms	4444 KB	Output is correct
17	Correct	1 ms	4444 KB	Output is correct
18	Correct	1 ms	4444 KB	Output is correct
19	Correct	1 ms	4444 KB	Output is correct
20	Correct	1 ms	4444 KB	Output is correct
21	Correct	4 ms	18780 KB	Output is correct
22	Correct	2 ms	18780 KB	Output is correct
23	Correct	2 ms	18780 KB	Output is correct
24	Correct	3 ms	18780 KB	Output is correct
25	Correct	2 ms	18924 KB	Output is correct
26	Correct	2 ms	18780 KB	Output is correct
27	Correct	3 ms	18788 KB	Output is correct
28	Correct	2 ms	18780 KB	Output is correct
29	Correct	3 ms	18780 KB	Output is correct
30	Correct	3 ms	18780 KB	Output is correct

Subtask #4
20.0 / 20.0

#	결과	실행 시간	메모리	Grader output
1	Correct	1 ms	2392 KB	Output is correct
2	Correct	0 ms	2396 KB	Output is correct
3	Correct	1 ms	4444 KB	Output is correct
4	Correct	1 ms	4444 KB	Output is correct
5	Correct	1 ms	4444 KB	Output is correct
6	Correct	1 ms	4444 KB	Output is correct
7	Correct	1 ms	4444 KB	Output is correct
8	Correct	1 ms	4444 KB	Output is correct
9	Correct	1 ms	4508 KB	Output is correct
10	Correct	1 ms	4444 KB	Output is correct
11	Correct	1 ms	4444 KB	Output is correct
12	Correct	1 ms	4444 KB	Output is correct
13	Correct	1 ms	4444 KB	Output is correct
14	Correct	1 ms	4440 KB	Output is correct
15	Correct	1 ms	4444 KB	Output is correct
16	Correct	1 ms	4444 KB	Output is correct
17	Correct	1 ms	4444 KB	Output is correct
18	Correct	1 ms	4444 KB	Output is correct
19	Correct	1 ms	4444 KB	Output is correct
20	Correct	1 ms	4444 KB	Output is correct
21	Correct	4 ms	18780 KB	Output is correct
22	Correct	2 ms	18780 KB	Output is correct
23	Correct	2 ms	18780 KB	Output is correct
24	Correct	3 ms	18780 KB	Output is correct
25	Correct	2 ms	18924 KB	Output is correct
26	Correct	2 ms	18780 KB	Output is correct
27	Correct	3 ms	18788 KB	Output is correct
28	Correct	2 ms	18780 KB	Output is correct
29	Correct	3 ms	18780 KB	Output is correct
30	Correct	3 ms	18780 KB	Output is correct
31	Correct	16 ms	66140 KB	Output is correct
32	Correct	13 ms	66140 KB	Output is correct
33	Correct	14 ms	66136 KB	Output is correct
34	Correct	13 ms	66140 KB	Output is correct
35	Correct	13 ms	66056 KB	Output is correct
36	Correct	13 ms	66140 KB	Output is correct
37	Correct	13 ms	66140 KB	Output is correct
38	Correct	12 ms	66136 KB	Output is correct
39	Correct	13 ms	66140 KB	Output is correct
40	Correct	14 ms	66120 KB	Output is correct

Subtask #5
36.0 / 36.0

#	결과	실행 시간	메모리	Grader output
1	Correct	1 ms	2392 KB	Output is correct
2	Correct	0 ms	2396 KB	Output is correct
3	Correct	1 ms	4444 KB	Output is correct
4	Correct	1 ms	4444 KB	Output is correct
5	Correct	1 ms	4444 KB	Output is correct
6	Correct	1 ms	4444 KB	Output is correct
7	Correct	1 ms	4444 KB	Output is correct
8	Correct	1 ms	4444 KB	Output is correct
9	Correct	1 ms	4508 KB	Output is correct
10	Correct	1 ms	4444 KB	Output is correct
11	Correct	1 ms	4444 KB	Output is correct
12	Correct	1 ms	4444 KB	Output is correct
13	Correct	1 ms	4444 KB	Output is correct
14	Correct	1 ms	4440 KB	Output is correct
15	Correct	1 ms	4444 KB	Output is correct
16	Correct	1 ms	4444 KB	Output is correct
17	Correct	1 ms	4444 KB	Output is correct
18	Correct	1 ms	4444 KB	Output is correct
19	Correct	1 ms	4444 KB	Output is correct
20	Correct	1 ms	4444 KB	Output is correct
21	Correct	4 ms	18780 KB	Output is correct
22	Correct	2 ms	18780 KB	Output is correct
23	Correct	2 ms	18780 KB	Output is correct
24	Correct	3 ms	18780 KB	Output is correct
25	Correct	2 ms	18924 KB	Output is correct
26	Correct	2 ms	18780 KB	Output is correct
27	Correct	3 ms	18788 KB	Output is correct
28	Correct	2 ms	18780 KB	Output is correct
29	Correct	3 ms	18780 KB	Output is correct
30	Correct	3 ms	18780 KB	Output is correct
31	Correct	16 ms	66140 KB	Output is correct
32	Correct	13 ms	66140 KB	Output is correct
33	Correct	14 ms	66136 KB	Output is correct
34	Correct	13 ms	66140 KB	Output is correct
35	Correct	13 ms	66056 KB	Output is correct
36	Correct	13 ms	66140 KB	Output is correct
37	Correct	13 ms	66140 KB	Output is correct
38	Correct	12 ms	66136 KB	Output is correct
39	Correct	13 ms	66140 KB	Output is correct
40	Correct	14 ms	66120 KB	Output is correct
41	Correct	566 ms	314284 KB	Output is correct
42	Correct	575 ms	314692 KB	Output is correct
43	Correct	499 ms	314668 KB	Output is correct
44	Correct	460 ms	314424 KB	Output is correct
45	Correct	465 ms	336552 KB	Output is correct
46	Correct	477 ms	346816 KB	Output is correct
47	Correct	461 ms	358740 KB	Output is correct
48	Correct	449 ms	359796 KB	Output is correct
49	Correct	460 ms	361024 KB	Output is correct
50	Correct	486 ms	358720 KB	Output is correct
51	Correct	453 ms	362068 KB	Output is correct
52	Correct	463 ms	362080 KB	Output is correct
53	Correct	470 ms	364628 KB	Output is correct
54	Correct	433 ms	368724 KB	Output is correct
55	Correct	455 ms	370656 KB	Output is correct

답안 #891816

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