답안 #855339

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
855339	2023-10-01T06:10:00 Z	willychan	Chorus (JOI23_chorus)	C++14	87 / 100	7000 ms	36396 KB

chorus

#include<bits/stdc++.h>
using namespace std;
typedef long long ll;
//#include<bits/extc++.h>
//__gnu_pbds
const int N = 1e6+5;
pair<ll,ll> dp[N];
int Bpa[N];
ll Bpasum[N];
int Bpaj[N];
int n,K;

ll cost(int i,int j){
	int r = min(Bpaj[j],j);
	int l = i+1;
	if(r<l) return 0;
	return (1LL*j*(r-l+1))-(Bpasum[r]-Bpasum[l-1]);
}

struct seg{
	int pos;int l;int r;
	seg(int _pos,int _l,int _r):pos(_pos),l(_l),r(_r){}
};

bool ok(ll v){
	for(int i=0;i<=n;i++) dp[i] = {1e18,0};
	dp[0]={0,0};
	dp[n+1] = {1e15,0};
	deque<seg> dq;
	dq.push_back(seg(0,1,n));
	for(int i=1;i<=n;i++){
		while(dq.size()){
			if(dq[0].r<i) dq.pop_front();
			else break;
		}
		dp[i] = {dp[dq[0].pos].first+cost(dq[0].pos,i)+v,dp[dq[0].pos].second+1};
		while(dq.size()){
			if(dp[dq.back().pos].first+cost(dq.back().pos,dq.back().l)>dp[i].first+cost(i,dq.back().l)) dq.pop_back();
			else break;
		}
		if(dq.empty()) dq.push_back(seg(i,i+1,n));
		else{
			seg pseg = dq.back();
			dq.pop_back();
			ll l = pseg.l;ll r = pseg.r+1;
			while(r-l>1){
				ll mid = (l+r)/2;
				if(dp[pseg.pos].first+cost(pseg.pos,mid)>dp[i].first+cost(i,mid)) r=mid;
				else l = mid;
			}
			dq.push_back(seg(pseg.pos,pseg.l,l));
			if(l!=n) dq.push_back(seg(i,l+1,n));
		}
	}
	return (dp[n].second<=K);
}
 
signed main(){
	ios_base::sync_with_stdio(0),cin.tie(0),cout.tie(0);
	cin>>n>>K;			
	string s;cin>>s;
	int pa = 0;
	int pb = 0;
	for(int i=1;i<=2*n;i++){
		if(s[i-1]=='A') Bpaj[pa++]=pb;
		if(s[i-1]=='B') Bpa[++pb]=pa;
	}
	for(int i=pa;i<=n;i++) Bpaj[i]=n;
	for(int i=1;i<=n;i++){
		Bpasum[i] = Bpasum[i-1]+Bpa[i];
	}
	ll l = -1;ll r = 1LL*n*n+2;
	while(r-l>1){
		ll mid = l+((r-l)/2);
		if(ok(mid)) r = mid;
		else l = mid;
	}
	ok(r);
	//cout<<r<<"\n";
	cout<<dp[n].first-(1LL*r*K)<<"\n";
 
	return 0;
}

Subtask #1
16.0 / 16.0

#	결과	실행 시간	메모리	Grader output
1	Correct	1 ms	4440 KB	Output is correct
2	Correct	1 ms	4440 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	4440 KB	Output is correct
8	Correct	1 ms	4444 KB	Output is correct
9	Correct	1 ms	4444 KB	Output is correct
10	Correct	1 ms	4504 KB	Output is correct
11	Correct	1 ms	4440 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	4444 KB	Output is correct
15	Correct	1 ms	4444 KB	Output is correct
16	Correct	1 ms	4444 KB	Output is correct

Subtask #2
24.0 / 24.0

#	결과	실행 시간	메모리	Grader output
1	Correct	1 ms	4440 KB	Output is correct
2	Correct	1 ms	4440 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	4440 KB	Output is correct
8	Correct	1 ms	4444 KB	Output is correct
9	Correct	1 ms	4444 KB	Output is correct
10	Correct	1 ms	4504 KB	Output is correct
11	Correct	1 ms	4440 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	4444 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	2 ms	4580 KB	Output is correct
19	Correct	1 ms	4444 KB	Output is correct
20	Correct	2 ms	4444 KB	Output is correct
21	Correct	1 ms	4696 KB	Output is correct
22	Correct	1 ms	4444 KB	Output is correct
23	Correct	2 ms	4444 KB	Output is correct
24	Correct	1 ms	4444 KB	Output is correct
25	Correct	1 ms	4444 KB	Output is correct
26	Correct	1 ms	4444 KB	Output is correct
27	Correct	1 ms	4440 KB	Output is correct
28	Correct	1 ms	4444 KB	Output is correct

Subtask #3
21.0 / 21.0

#	결과	실행 시간	메모리	Grader output
1	Correct	1 ms	4440 KB	Output is correct
2	Correct	1 ms	4440 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	4440 KB	Output is correct
8	Correct	1 ms	4444 KB	Output is correct
9	Correct	1 ms	4444 KB	Output is correct
10	Correct	1 ms	4504 KB	Output is correct
11	Correct	1 ms	4440 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	4444 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	2 ms	4580 KB	Output is correct
19	Correct	1 ms	4444 KB	Output is correct
20	Correct	2 ms	4444 KB	Output is correct
21	Correct	1 ms	4696 KB	Output is correct
22	Correct	1 ms	4444 KB	Output is correct
23	Correct	2 ms	4444 KB	Output is correct
24	Correct	1 ms	4444 KB	Output is correct
25	Correct	1 ms	4444 KB	Output is correct
26	Correct	1 ms	4444 KB	Output is correct
27	Correct	1 ms	4440 KB	Output is correct
28	Correct	1 ms	4444 KB	Output is correct
29	Correct	14 ms	4440 KB	Output is correct
30	Correct	13 ms	4440 KB	Output is correct
31	Correct	12 ms	4444 KB	Output is correct
32	Correct	17 ms	4656 KB	Output is correct
33	Correct	10 ms	4444 KB	Output is correct
34	Correct	15 ms	4668 KB	Output is correct
35	Correct	14 ms	4664 KB	Output is correct
36	Correct	12 ms	4444 KB	Output is correct
37	Correct	13 ms	4664 KB	Output is correct
38	Correct	14 ms	4444 KB	Output is correct
39	Correct	14 ms	4664 KB	Output is correct
40	Correct	10 ms	4444 KB	Output is correct
41	Correct	11 ms	4444 KB	Output is correct
42	Correct	10 ms	4440 KB	Output is correct

Subtask #4
26.0 / 26.0

#	결과	실행 시간	메모리	Grader output
1	Correct	1 ms	4440 KB	Output is correct
2	Correct	1 ms	4440 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	4440 KB	Output is correct
8	Correct	1 ms	4444 KB	Output is correct
9	Correct	1 ms	4444 KB	Output is correct
10	Correct	1 ms	4504 KB	Output is correct
11	Correct	1 ms	4440 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	4444 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	2 ms	4580 KB	Output is correct
19	Correct	1 ms	4444 KB	Output is correct
20	Correct	2 ms	4444 KB	Output is correct
21	Correct	1 ms	4696 KB	Output is correct
22	Correct	1 ms	4444 KB	Output is correct
23	Correct	2 ms	4444 KB	Output is correct
24	Correct	1 ms	4444 KB	Output is correct
25	Correct	1 ms	4444 KB	Output is correct
26	Correct	1 ms	4444 KB	Output is correct
27	Correct	1 ms	4440 KB	Output is correct
28	Correct	1 ms	4444 KB	Output is correct
29	Correct	14 ms	4440 KB	Output is correct
30	Correct	13 ms	4440 KB	Output is correct
31	Correct	12 ms	4444 KB	Output is correct
32	Correct	17 ms	4656 KB	Output is correct
33	Correct	10 ms	4444 KB	Output is correct
34	Correct	15 ms	4668 KB	Output is correct
35	Correct	14 ms	4664 KB	Output is correct
36	Correct	12 ms	4444 KB	Output is correct
37	Correct	13 ms	4664 KB	Output is correct
38	Correct	14 ms	4444 KB	Output is correct
39	Correct	14 ms	4664 KB	Output is correct
40	Correct	10 ms	4444 KB	Output is correct
41	Correct	11 ms	4444 KB	Output is correct
42	Correct	10 ms	4440 KB	Output is correct
43	Correct	217 ms	11512 KB	Output is correct
44	Correct	408 ms	11576 KB	Output is correct
45	Correct	386 ms	11592 KB	Output is correct
46	Correct	591 ms	11492 KB	Output is correct
47	Correct	330 ms	12140 KB	Output is correct
48	Correct	497 ms	11712 KB	Output is correct
49	Correct	497 ms	11708 KB	Output is correct
50	Correct	391 ms	11496 KB	Output is correct
51	Correct	405 ms	11492 KB	Output is correct
52	Correct	499 ms	11592 KB	Output is correct
53	Correct	495 ms	11708 KB	Output is correct
54	Correct	392 ms	11656 KB	Output is correct

Subtask #5
0 / 13.0

#	결과	실행 시간	메모리	Grader output
1	Correct	1 ms	4440 KB	Output is correct
2	Correct	1 ms	4440 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	4440 KB	Output is correct
8	Correct	1 ms	4444 KB	Output is correct
9	Correct	1 ms	4444 KB	Output is correct
10	Correct	1 ms	4504 KB	Output is correct
11	Correct	1 ms	4440 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	4444 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	2 ms	4580 KB	Output is correct
19	Correct	1 ms	4444 KB	Output is correct
20	Correct	2 ms	4444 KB	Output is correct
21	Correct	1 ms	4696 KB	Output is correct
22	Correct	1 ms	4444 KB	Output is correct
23	Correct	2 ms	4444 KB	Output is correct
24	Correct	1 ms	4444 KB	Output is correct
25	Correct	1 ms	4444 KB	Output is correct
26	Correct	1 ms	4444 KB	Output is correct
27	Correct	1 ms	4440 KB	Output is correct
28	Correct	1 ms	4444 KB	Output is correct
29	Correct	14 ms	4440 KB	Output is correct
30	Correct	13 ms	4440 KB	Output is correct
31	Correct	12 ms	4444 KB	Output is correct
32	Correct	17 ms	4656 KB	Output is correct
33	Correct	10 ms	4444 KB	Output is correct
34	Correct	15 ms	4668 KB	Output is correct
35	Correct	14 ms	4664 KB	Output is correct
36	Correct	12 ms	4444 KB	Output is correct
37	Correct	13 ms	4664 KB	Output is correct
38	Correct	14 ms	4444 KB	Output is correct
39	Correct	14 ms	4664 KB	Output is correct
40	Correct	10 ms	4444 KB	Output is correct
41	Correct	11 ms	4444 KB	Output is correct
42	Correct	10 ms	4440 KB	Output is correct
43	Correct	217 ms	11512 KB	Output is correct
44	Correct	408 ms	11576 KB	Output is correct
45	Correct	386 ms	11592 KB	Output is correct
46	Correct	591 ms	11492 KB	Output is correct
47	Correct	330 ms	12140 KB	Output is correct
48	Correct	497 ms	11712 KB	Output is correct
49	Correct	497 ms	11708 KB	Output is correct
50	Correct	391 ms	11496 KB	Output is correct
51	Correct	405 ms	11492 KB	Output is correct
52	Correct	499 ms	11592 KB	Output is correct
53	Correct	495 ms	11708 KB	Output is correct
54	Correct	392 ms	11656 KB	Output is correct
55	Correct	3284 ms	29944 KB	Output is correct
56	Correct	6166 ms	36396 KB	Output is correct
57	Correct	5292 ms	35992 KB	Output is correct
58	Execution timed out	7036 ms	33788 KB	Time limit exceeded
59	Halted	0 ms	0 KB	-

답안 #855339

Compilation message

Subtask #1 16.0 / 16.0

Subtask #2 24.0 / 24.0

Subtask #3 21.0 / 21.0

Subtask #4 26.0 / 26.0

Subtask #5 0 / 13.0

Subtask #1
16.0 / 16.0

Subtask #2
24.0 / 24.0

Subtask #3
21.0 / 21.0

Subtask #4
26.0 / 26.0

Subtask #5
0 / 13.0