답안 #398609

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
398609	2021-05-04T15:31:09 Z	AmineWeslati	Group Photo (JOI21_ho_t3)	C++17	100 / 100	681 ms	117756 KB

Main

#include <bits/stdc++.h>
using namespace std; 
	
typedef long long ll;
typedef vector<int>vi;
#define pb push_back
#define sz(v) (int)v.size()
#define FOR(i,a,b) for(int i=a; i<b; i++)
#define ROF(i,a,b) for(int i=b-1; i>=a; i--)

void ckmin(ll &x, ll y){x=min(x,y);}

void IO(){
#ifdef LOCAL
	freopen("input.txt","r",stdin);
	freopen("output.txt","w",stdout);
#endif
}
//--------------------------------------------------------------------

const int MX=5e3+10;
int N;
ll val[MX][MX]; 
vi a(MX);

vi t; 
void upd(int i){
	for(;i<sz(t); i+=i&-i) t[i]++;
}
int get(int i){
	int ans=0;
	for(;i;i-=i&-i) ans+=t[i];
	return ans; 
}

void compute(){
	FOR(l,1,N+1){
		vi b;
		FOR(i,1,N+1) if(a[i]>=l) b.pb(a[i]);
		int n=sz(b);

		vi order(N+1),nb(N+1,0);
		t.assign(N+1,0);
		ROF(i,0,n){
			order[b[i]]=i;
			nb[b[i]]=get(b[i]);
			upd(b[i]);
		}

		val[l][l]=order[l];
		FOR(r,l+1,N+1)
			val[l][r]=val[l][r-1]+order[r]-nb[r];
	}
}

int main(){
	IO();

	cin>>N;
	FOR(i,1,N+1) cin>>a[i];


	compute();
	
	ll dp[N+1];
	dp[0]=0;
	FOR(i,1,N+1){
		dp[i]=1e18;
		FOR(j,0,i) ckmin(dp[i],dp[j]+val[j+1][i]);
	}
	cout << dp[N] << endl;
}

Subtask #1
5.0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	1 ms	332 KB	Output is correct
2	Correct	1 ms	332 KB	Output is correct
3	Correct	1 ms	332 KB	Output is correct
4	Correct	1 ms	324 KB	Output is correct
5	Correct	2 ms	332 KB	Output is correct
6	Correct	1 ms	332 KB	Output is correct
7	Correct	1 ms	332 KB	Output is correct
8	Correct	1 ms	332 KB	Output is correct
9	Correct	1 ms	332 KB	Output is correct
10	Correct	1 ms	320 KB	Output is correct

Subtask #2
7.0 / 7.0

#	결과	실행 시간	메모리	Grader output
1	Correct	1 ms	332 KB	Output is correct
2	Correct	1 ms	332 KB	Output is correct
3	Correct	1 ms	332 KB	Output is correct
4	Correct	1 ms	324 KB	Output is correct
5	Correct	2 ms	332 KB	Output is correct
6	Correct	1 ms	332 KB	Output is correct
7	Correct	1 ms	332 KB	Output is correct
8	Correct	1 ms	332 KB	Output is correct
9	Correct	1 ms	332 KB	Output is correct
10	Correct	1 ms	320 KB	Output is correct
11	Correct	1 ms	324 KB	Output is correct
12	Correct	1 ms	332 KB	Output is correct
13	Correct	1 ms	332 KB	Output is correct
14	Correct	1 ms	332 KB	Output is correct
15	Correct	1 ms	332 KB	Output is correct
16	Correct	1 ms	332 KB	Output is correct
17	Correct	1 ms	332 KB	Output is correct
18	Correct	1 ms	332 KB	Output is correct
19	Correct	2 ms	332 KB	Output is correct
20	Correct	1 ms	332 KB	Output is correct

Subtask #3
32.0 / 32.0

#	결과	실행 시간	메모리	Grader output
1	Correct	1 ms	332 KB	Output is correct
2	Correct	1 ms	332 KB	Output is correct
3	Correct	1 ms	332 KB	Output is correct
4	Correct	1 ms	324 KB	Output is correct
5	Correct	2 ms	332 KB	Output is correct
6	Correct	1 ms	332 KB	Output is correct
7	Correct	1 ms	332 KB	Output is correct
8	Correct	1 ms	332 KB	Output is correct
9	Correct	1 ms	332 KB	Output is correct
10	Correct	1 ms	320 KB	Output is correct
11	Correct	1 ms	324 KB	Output is correct
12	Correct	1 ms	332 KB	Output is correct
13	Correct	1 ms	332 KB	Output is correct
14	Correct	1 ms	332 KB	Output is correct
15	Correct	1 ms	332 KB	Output is correct
16	Correct	1 ms	332 KB	Output is correct
17	Correct	1 ms	332 KB	Output is correct
18	Correct	1 ms	332 KB	Output is correct
19	Correct	2 ms	332 KB	Output is correct
20	Correct	1 ms	332 KB	Output is correct
21	Correct	2 ms	1228 KB	Output is correct
22	Correct	2 ms	1228 KB	Output is correct
23	Correct	2 ms	1228 KB	Output is correct
24	Correct	2 ms	1228 KB	Output is correct
25	Correct	2 ms	1228 KB	Output is correct
26	Correct	2 ms	1228 KB	Output is correct
27	Correct	3 ms	1228 KB	Output is correct
28	Correct	2 ms	1232 KB	Output is correct
29	Correct	2 ms	1228 KB	Output is correct
30	Correct	2 ms	1228 KB	Output is correct

Subtask #4
20.0 / 20.0

#	결과	실행 시간	메모리	Grader output
1	Correct	1 ms	332 KB	Output is correct
2	Correct	1 ms	332 KB	Output is correct
3	Correct	1 ms	332 KB	Output is correct
4	Correct	1 ms	324 KB	Output is correct
5	Correct	2 ms	332 KB	Output is correct
6	Correct	1 ms	332 KB	Output is correct
7	Correct	1 ms	332 KB	Output is correct
8	Correct	1 ms	332 KB	Output is correct
9	Correct	1 ms	332 KB	Output is correct
10	Correct	1 ms	320 KB	Output is correct
11	Correct	1 ms	324 KB	Output is correct
12	Correct	1 ms	332 KB	Output is correct
13	Correct	1 ms	332 KB	Output is correct
14	Correct	1 ms	332 KB	Output is correct
15	Correct	1 ms	332 KB	Output is correct
16	Correct	1 ms	332 KB	Output is correct
17	Correct	1 ms	332 KB	Output is correct
18	Correct	1 ms	332 KB	Output is correct
19	Correct	2 ms	332 KB	Output is correct
20	Correct	1 ms	332 KB	Output is correct
21	Correct	2 ms	1228 KB	Output is correct
22	Correct	2 ms	1228 KB	Output is correct
23	Correct	2 ms	1228 KB	Output is correct
24	Correct	2 ms	1228 KB	Output is correct
25	Correct	2 ms	1228 KB	Output is correct
26	Correct	2 ms	1228 KB	Output is correct
27	Correct	3 ms	1228 KB	Output is correct
28	Correct	2 ms	1232 KB	Output is correct
29	Correct	2 ms	1228 KB	Output is correct
30	Correct	2 ms	1228 KB	Output is correct
31	Correct	13 ms	5996 KB	Output is correct
32	Correct	14 ms	6068 KB	Output is correct
33	Correct	14 ms	6092 KB	Output is correct
34	Correct	14 ms	6092 KB	Output is correct
35	Correct	14 ms	6088 KB	Output is correct
36	Correct	26 ms	6012 KB	Output is correct
37	Correct	14 ms	6040 KB	Output is correct
38	Correct	31 ms	6080 KB	Output is correct
39	Correct	32 ms	6056 KB	Output is correct
40	Correct	34 ms	6012 KB	Output is correct

Subtask #5
36.0 / 36.0

#	결과	실행 시간	메모리	Grader output
1	Correct	1 ms	332 KB	Output is correct
2	Correct	1 ms	332 KB	Output is correct
3	Correct	1 ms	332 KB	Output is correct
4	Correct	1 ms	324 KB	Output is correct
5	Correct	2 ms	332 KB	Output is correct
6	Correct	1 ms	332 KB	Output is correct
7	Correct	1 ms	332 KB	Output is correct
8	Correct	1 ms	332 KB	Output is correct
9	Correct	1 ms	332 KB	Output is correct
10	Correct	1 ms	320 KB	Output is correct
11	Correct	1 ms	324 KB	Output is correct
12	Correct	1 ms	332 KB	Output is correct
13	Correct	1 ms	332 KB	Output is correct
14	Correct	1 ms	332 KB	Output is correct
15	Correct	1 ms	332 KB	Output is correct
16	Correct	1 ms	332 KB	Output is correct
17	Correct	1 ms	332 KB	Output is correct
18	Correct	1 ms	332 KB	Output is correct
19	Correct	2 ms	332 KB	Output is correct
20	Correct	1 ms	332 KB	Output is correct
21	Correct	2 ms	1228 KB	Output is correct
22	Correct	2 ms	1228 KB	Output is correct
23	Correct	2 ms	1228 KB	Output is correct
24	Correct	2 ms	1228 KB	Output is correct
25	Correct	2 ms	1228 KB	Output is correct
26	Correct	2 ms	1228 KB	Output is correct
27	Correct	3 ms	1228 KB	Output is correct
28	Correct	2 ms	1232 KB	Output is correct
29	Correct	2 ms	1228 KB	Output is correct
30	Correct	2 ms	1228 KB	Output is correct
31	Correct	13 ms	5996 KB	Output is correct
32	Correct	14 ms	6068 KB	Output is correct
33	Correct	14 ms	6092 KB	Output is correct
34	Correct	14 ms	6092 KB	Output is correct
35	Correct	14 ms	6088 KB	Output is correct
36	Correct	26 ms	6012 KB	Output is correct
37	Correct	14 ms	6040 KB	Output is correct
38	Correct	31 ms	6080 KB	Output is correct
39	Correct	32 ms	6056 KB	Output is correct
40	Correct	34 ms	6012 KB	Output is correct
41	Correct	649 ms	117280 KB	Output is correct
42	Correct	668 ms	117440 KB	Output is correct
43	Correct	663 ms	117564 KB	Output is correct
44	Correct	645 ms	117552 KB	Output is correct
45	Correct	681 ms	117400 KB	Output is correct
46	Correct	651 ms	117452 KB	Output is correct
47	Correct	649 ms	117756 KB	Output is correct
48	Correct	659 ms	117640 KB	Output is correct
49	Correct	653 ms	117468 KB	Output is correct
50	Correct	642 ms	117432 KB	Output is correct
51	Correct	659 ms	117444 KB	Output is correct
52	Correct	666 ms	117544 KB	Output is correct
53	Correct	665 ms	117568 KB	Output is correct
54	Correct	648 ms	117432 KB	Output is correct
55	Correct	652 ms	117484 KB	Output is correct

답안 #398609

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