답안 #565463

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
565463	2022-05-20T22:56:38 Z	CSQ31	The short shank; Redemption (BOI21_prison)	C++17	100 / 100	477 ms	275152 KB

prison

#pragma GCC optimize("Ofast") 
#include <bits/stdc++.h>
using namespace std;
const int MAXN = 2e6+1;
int a[MAXN],lf[MAXN],par[MAXN],sub[MAXN],nxt[MAXN];
bool ded[MAXN];
vector<int>adj[MAXN];
#define owo ios_base::sync_with_stdio(0);cin.tie(0);
void dfs(int v){
	int mx = 0;
	for(int x:adj[v]){
		dfs(x);
		if(mx < sub[x]){
			mx = sub[x];
			nxt[v] = x;
		}
	}
	sub[v] = mx+1;
	
}
int main()
{
	owo
	int n,d,t;
	cin>>n>>d>>t;
	for(int i=0;i<n;i++){
		cin>>a[i];
		lf[i] = -1;
	}
	int ans = 0;
	stack<int>stk;
	for(int i=0;i<n;i++){
		if(a[i]<=t){
			ans++;
			while(!stk.empty() && a[stk.top()] >= a[i])stk.pop();
			stk.push(i); 
		}else{
			while(!stk.empty() && i-stk.top() > t-a[stk.top()])stk.pop();
			if(stk.empty())continue;
			ans++;
			lf[i] = stk.top();
		}
	}
	while(!stk.empty())stk.pop();
	for(int i=n-1;i>=0;i--){
		if(lf[i] == -1)continue;
		while(!stk.empty() && lf[stk.top()] >= i)stk.pop();
		if(!stk.empty()){
			par[i] = stk.top();
			adj[par[i]].push_back(i);
		}
		else par[i] = -1;
		
		while(!stk.empty() && lf[i] <= lf[stk.top()])stk.pop();
		stk.push(i);
		//cout<<i<<" "<<par[i]<<'\n';
	}
	for(int i=0;i<n;i++)nxt[i] = -1;
	for(int i=0;i<=n-1;i++){
		if(par[i] == -1)dfs(i);
	}
	vector<vector<int>> s(n+1);
	//for(int i=0;i<n;i++)cout<<lf[i]<<" ";
	//cout<<'\n';
	for(int i=0;i<n;i++){
		//cout<<sub[i]<<" ";
		s[sub[i]].push_back(i);
	}
	//cout<<'\n';
	for(int i=n;i>=1;i--){
		for(int x:s[i]){
			if(ded[x])continue;
			ans-=i;
			int v = x;
			while(v!=-1){
				ded[v] = 1;
				v = nxt[v];
			}
			d--;
			if(!d)break;
		}
		if(!d)break;
		
	}
	cout<<ans<<'\n';
}

Subtask #1

15.0 / 15.0

#	결과	실행 시간	메모리	Grader output
1	Correct	26 ms	47208 KB	Output is correct
2	Correct	31 ms	47256 KB	Output is correct
3	Correct	33 ms	47340 KB	Output is correct
4	Correct	28 ms	47372 KB	Output is correct
5	Correct	27 ms	47296 KB	Output is correct
6	Correct	26 ms	47308 KB	Output is correct
7	Correct	25 ms	47340 KB	Output is correct
8	Correct	25 ms	47316 KB	Output is correct
9	Correct	25 ms	47332 KB	Output is correct
10	Correct	26 ms	47300 KB	Output is correct
11	Correct	27 ms	47344 KB	Output is correct

Subtask #2

10.0 / 10.0

#	결과	실행 시간	메모리	Grader output
1	Correct	27 ms	47312 KB	Output is correct
2	Correct	120 ms	75308 KB	Output is correct
3	Correct	105 ms	73592 KB	Output is correct
4	Correct	95 ms	77272 KB	Output is correct
5	Correct	95 ms	79088 KB	Output is correct
6	Correct	95 ms	77536 KB	Output is correct
7	Correct	155 ms	118716 KB	Output is correct
8	Correct	124 ms	78348 KB	Output is correct

Subtask #3

20.0 / 20.0

#	결과	실행 시간	메모리	Grader output
1	Correct	26 ms	47208 KB	Output is correct
2	Correct	31 ms	47256 KB	Output is correct
3	Correct	33 ms	47340 KB	Output is correct
4	Correct	28 ms	47372 KB	Output is correct
5	Correct	27 ms	47296 KB	Output is correct
6	Correct	26 ms	47308 KB	Output is correct
7	Correct	25 ms	47340 KB	Output is correct
8	Correct	25 ms	47316 KB	Output is correct
9	Correct	25 ms	47332 KB	Output is correct
10	Correct	26 ms	47300 KB	Output is correct
11	Correct	27 ms	47344 KB	Output is correct
12	Correct	25 ms	47228 KB	Output is correct
13	Correct	25 ms	47264 KB	Output is correct
14	Correct	26 ms	47260 KB	Output is correct
15	Correct	26 ms	47360 KB	Output is correct
16	Correct	26 ms	47272 KB	Output is correct
17	Correct	27 ms	47368 KB	Output is correct
18	Correct	26 ms	47308 KB	Output is correct
19	Correct	27 ms	47408 KB	Output is correct
20	Correct	26 ms	47348 KB	Output is correct
21	Correct	34 ms	47308 KB	Output is correct
22	Correct	28 ms	47268 KB	Output is correct
23	Correct	26 ms	47532 KB	Output is correct
24	Correct	26 ms	47564 KB	Output is correct
25	Correct	26 ms	47584 KB	Output is correct
26	Correct	25 ms	47544 KB	Output is correct
27	Correct	27 ms	47564 KB	Output is correct
28	Correct	28 ms	47460 KB	Output is correct
29	Correct	26 ms	47500 KB	Output is correct
30	Correct	28 ms	47560 KB	Output is correct
31	Correct	27 ms	47608 KB	Output is correct
32	Correct	29 ms	47484 KB	Output is correct
33	Correct	28 ms	47444 KB	Output is correct
34	Correct	27 ms	47572 KB	Output is correct
35	Correct	27 ms	47572 KB	Output is correct

Subtask #4

10.0 / 10.0

#	결과	실행 시간	메모리	Grader output
1	Correct	25 ms	47316 KB	Output is correct
2	Correct	38 ms	51860 KB	Output is correct
3	Correct	39 ms	51608 KB	Output is correct
4	Correct	44 ms	54476 KB	Output is correct
5	Correct	53 ms	55536 KB	Output is correct
6	Correct	54 ms	55628 KB	Output is correct
7	Correct	39 ms	51848 KB	Output is correct
8	Correct	35 ms	51540 KB	Output is correct
9	Correct	41 ms	57928 KB	Output is correct
10	Correct	35 ms	50988 KB	Output is correct

Subtask #5

25.0 / 25.0

#	결과	실행 시간	메모리	Grader output
1	Correct	26 ms	47208 KB	Output is correct
2	Correct	31 ms	47256 KB	Output is correct
3	Correct	33 ms	47340 KB	Output is correct
4	Correct	28 ms	47372 KB	Output is correct
5	Correct	27 ms	47296 KB	Output is correct
6	Correct	26 ms	47308 KB	Output is correct
7	Correct	25 ms	47340 KB	Output is correct
8	Correct	25 ms	47316 KB	Output is correct
9	Correct	25 ms	47332 KB	Output is correct
10	Correct	26 ms	47300 KB	Output is correct
11	Correct	27 ms	47344 KB	Output is correct
12	Correct	25 ms	47228 KB	Output is correct
13	Correct	25 ms	47264 KB	Output is correct
14	Correct	26 ms	47260 KB	Output is correct
15	Correct	26 ms	47360 KB	Output is correct
16	Correct	26 ms	47272 KB	Output is correct
17	Correct	27 ms	47368 KB	Output is correct
18	Correct	26 ms	47308 KB	Output is correct
19	Correct	27 ms	47408 KB	Output is correct
20	Correct	26 ms	47348 KB	Output is correct
21	Correct	34 ms	47308 KB	Output is correct
22	Correct	28 ms	47268 KB	Output is correct
23	Correct	26 ms	47532 KB	Output is correct
24	Correct	26 ms	47564 KB	Output is correct
25	Correct	26 ms	47584 KB	Output is correct
26	Correct	25 ms	47544 KB	Output is correct
27	Correct	27 ms	47564 KB	Output is correct
28	Correct	28 ms	47460 KB	Output is correct
29	Correct	26 ms	47500 KB	Output is correct
30	Correct	28 ms	47560 KB	Output is correct
31	Correct	27 ms	47608 KB	Output is correct
32	Correct	29 ms	47484 KB	Output is correct
33	Correct	28 ms	47444 KB	Output is correct
34	Correct	27 ms	47572 KB	Output is correct
35	Correct	27 ms	47572 KB	Output is correct
36	Correct	25 ms	47316 KB	Output is correct
37	Correct	38 ms	51860 KB	Output is correct
38	Correct	39 ms	51608 KB	Output is correct
39	Correct	44 ms	54476 KB	Output is correct
40	Correct	53 ms	55536 KB	Output is correct
41	Correct	54 ms	55628 KB	Output is correct
42	Correct	39 ms	51848 KB	Output is correct
43	Correct	35 ms	51540 KB	Output is correct
44	Correct	41 ms	57928 KB	Output is correct
45	Correct	35 ms	50988 KB	Output is correct
46	Correct	27 ms	47312 KB	Output is correct
47	Correct	28 ms	47444 KB	Output is correct
48	Correct	29 ms	47340 KB	Output is correct
49	Correct	27 ms	47340 KB	Output is correct
50	Correct	26 ms	47320 KB	Output is correct
51	Correct	27 ms	47376 KB	Output is correct
52	Correct	26 ms	47316 KB	Output is correct
53	Correct	26 ms	47296 KB	Output is correct
54	Correct	26 ms	47292 KB	Output is correct
55	Correct	26 ms	47292 KB	Output is correct
56	Correct	33 ms	47252 KB	Output is correct
57	Correct	30 ms	47700 KB	Output is correct
58	Correct	28 ms	47436 KB	Output is correct
59	Correct	32 ms	47592 KB	Output is correct
60	Correct	26 ms	47516 KB	Output is correct
61	Correct	27 ms	47584 KB	Output is correct
62	Correct	27 ms	47444 KB	Output is correct
63	Correct	26 ms	47560 KB	Output is correct
64	Correct	26 ms	47484 KB	Output is correct
65	Correct	27 ms	47572 KB	Output is correct
66	Correct	30 ms	47472 KB	Output is correct
67	Correct	27 ms	47456 KB	Output is correct
68	Correct	26 ms	47572 KB	Output is correct
69	Correct	26 ms	47628 KB	Output is correct
70	Correct	26 ms	47312 KB	Output is correct
71	Correct	38 ms	51848 KB	Output is correct
72	Correct	37 ms	51632 KB	Output is correct
73	Correct	41 ms	54376 KB	Output is correct
74	Correct	45 ms	55452 KB	Output is correct
75	Correct	44 ms	55636 KB	Output is correct
76	Correct	40 ms	51900 KB	Output is correct
77	Correct	35 ms	51592 KB	Output is correct
78	Correct	41 ms	58004 KB	Output is correct
79	Correct	33 ms	51028 KB	Output is correct
80	Correct	38 ms	51660 KB	Output is correct
81	Correct	48 ms	51916 KB	Output is correct
82	Correct	40 ms	51680 KB	Output is correct
83	Correct	40 ms	53048 KB	Output is correct
84	Correct	36 ms	52092 KB	Output is correct
85	Correct	44 ms	55876 KB	Output is correct
86	Correct	37 ms	52820 KB	Output is correct
87	Correct	36 ms	51284 KB	Output is correct
88	Correct	41 ms	56652 KB	Output is correct
89	Correct	42 ms	57672 KB	Output is correct
90	Correct	42 ms	55520 KB	Output is correct

Subtask #6

20.0 / 20.0

#	결과	실행 시간	메모리	Grader output
1	Correct	26 ms	47208 KB	Output is correct
2	Correct	31 ms	47256 KB	Output is correct
3	Correct	33 ms	47340 KB	Output is correct
4	Correct	28 ms	47372 KB	Output is correct
5	Correct	27 ms	47296 KB	Output is correct
6	Correct	26 ms	47308 KB	Output is correct
7	Correct	25 ms	47340 KB	Output is correct
8	Correct	25 ms	47316 KB	Output is correct
9	Correct	25 ms	47332 KB	Output is correct
10	Correct	26 ms	47300 KB	Output is correct
11	Correct	27 ms	47344 KB	Output is correct
12	Correct	27 ms	47312 KB	Output is correct
13	Correct	120 ms	75308 KB	Output is correct
14	Correct	105 ms	73592 KB	Output is correct
15	Correct	95 ms	77272 KB	Output is correct
16	Correct	95 ms	79088 KB	Output is correct
17	Correct	95 ms	77536 KB	Output is correct
18	Correct	155 ms	118716 KB	Output is correct
19	Correct	124 ms	78348 KB	Output is correct
20	Correct	25 ms	47228 KB	Output is correct
21	Correct	25 ms	47264 KB	Output is correct
22	Correct	26 ms	47260 KB	Output is correct
23	Correct	26 ms	47360 KB	Output is correct
24	Correct	26 ms	47272 KB	Output is correct
25	Correct	27 ms	47368 KB	Output is correct
26	Correct	26 ms	47308 KB	Output is correct
27	Correct	27 ms	47408 KB	Output is correct
28	Correct	26 ms	47348 KB	Output is correct
29	Correct	34 ms	47308 KB	Output is correct
30	Correct	28 ms	47268 KB	Output is correct
31	Correct	26 ms	47532 KB	Output is correct
32	Correct	26 ms	47564 KB	Output is correct
33	Correct	26 ms	47584 KB	Output is correct
34	Correct	25 ms	47544 KB	Output is correct
35	Correct	27 ms	47564 KB	Output is correct
36	Correct	28 ms	47460 KB	Output is correct
37	Correct	26 ms	47500 KB	Output is correct
38	Correct	28 ms	47560 KB	Output is correct
39	Correct	27 ms	47608 KB	Output is correct
40	Correct	29 ms	47484 KB	Output is correct
41	Correct	28 ms	47444 KB	Output is correct
42	Correct	27 ms	47572 KB	Output is correct
43	Correct	27 ms	47572 KB	Output is correct
44	Correct	25 ms	47316 KB	Output is correct
45	Correct	38 ms	51860 KB	Output is correct
46	Correct	39 ms	51608 KB	Output is correct
47	Correct	44 ms	54476 KB	Output is correct
48	Correct	53 ms	55536 KB	Output is correct
49	Correct	54 ms	55628 KB	Output is correct
50	Correct	39 ms	51848 KB	Output is correct
51	Correct	35 ms	51540 KB	Output is correct
52	Correct	41 ms	57928 KB	Output is correct
53	Correct	35 ms	50988 KB	Output is correct
54	Correct	27 ms	47312 KB	Output is correct
55	Correct	28 ms	47444 KB	Output is correct
56	Correct	29 ms	47340 KB	Output is correct
57	Correct	27 ms	47340 KB	Output is correct
58	Correct	26 ms	47320 KB	Output is correct
59	Correct	27 ms	47376 KB	Output is correct
60	Correct	26 ms	47316 KB	Output is correct
61	Correct	26 ms	47296 KB	Output is correct
62	Correct	26 ms	47292 KB	Output is correct
63	Correct	26 ms	47292 KB	Output is correct
64	Correct	33 ms	47252 KB	Output is correct
65	Correct	30 ms	47700 KB	Output is correct
66	Correct	28 ms	47436 KB	Output is correct
67	Correct	32 ms	47592 KB	Output is correct
68	Correct	26 ms	47516 KB	Output is correct
69	Correct	27 ms	47584 KB	Output is correct
70	Correct	27 ms	47444 KB	Output is correct
71	Correct	26 ms	47560 KB	Output is correct
72	Correct	26 ms	47484 KB	Output is correct
73	Correct	27 ms	47572 KB	Output is correct
74	Correct	30 ms	47472 KB	Output is correct
75	Correct	27 ms	47456 KB	Output is correct
76	Correct	26 ms	47572 KB	Output is correct
77	Correct	26 ms	47628 KB	Output is correct
78	Correct	26 ms	47312 KB	Output is correct
79	Correct	38 ms	51848 KB	Output is correct
80	Correct	37 ms	51632 KB	Output is correct
81	Correct	41 ms	54376 KB	Output is correct
82	Correct	45 ms	55452 KB	Output is correct
83	Correct	44 ms	55636 KB	Output is correct
84	Correct	40 ms	51900 KB	Output is correct
85	Correct	35 ms	51592 KB	Output is correct
86	Correct	41 ms	58004 KB	Output is correct
87	Correct	33 ms	51028 KB	Output is correct
88	Correct	38 ms	51660 KB	Output is correct
89	Correct	48 ms	51916 KB	Output is correct
90	Correct	40 ms	51680 KB	Output is correct
91	Correct	40 ms	53048 KB	Output is correct
92	Correct	36 ms	52092 KB	Output is correct
93	Correct	44 ms	55876 KB	Output is correct
94	Correct	37 ms	52820 KB	Output is correct
95	Correct	36 ms	51284 KB	Output is correct
96	Correct	41 ms	56652 KB	Output is correct
97	Correct	42 ms	57672 KB	Output is correct
98	Correct	42 ms	55520 KB	Output is correct
99	Correct	32 ms	47232 KB	Output is correct
100	Correct	31 ms	47344 KB	Output is correct
101	Correct	29 ms	47360 KB	Output is correct
102	Correct	25 ms	47316 KB	Output is correct
103	Correct	26 ms	47288 KB	Output is correct
104	Correct	25 ms	47360 KB	Output is correct
105	Correct	27 ms	47244 KB	Output is correct
106	Correct	26 ms	47316 KB	Output is correct
107	Correct	26 ms	47364 KB	Output is correct
108	Correct	25 ms	47324 KB	Output is correct
109	Correct	27 ms	47368 KB	Output is correct
110	Correct	32 ms	47232 KB	Output is correct
111	Correct	120 ms	75320 KB	Output is correct
112	Correct	101 ms	73576 KB	Output is correct
113	Correct	98 ms	77284 KB	Output is correct
114	Correct	96 ms	79160 KB	Output is correct
115	Correct	104 ms	77552 KB	Output is correct
116	Correct	148 ms	118768 KB	Output is correct
117	Correct	115 ms	78396 KB	Output is correct
118	Correct	28 ms	47564 KB	Output is correct
119	Correct	26 ms	47444 KB	Output is correct
120	Correct	25 ms	47572 KB	Output is correct
121	Correct	29 ms	47476 KB	Output is correct
122	Correct	30 ms	47548 KB	Output is correct
123	Correct	28 ms	47432 KB	Output is correct
124	Correct	29 ms	47480 KB	Output is correct
125	Correct	27 ms	47584 KB	Output is correct
126	Correct	27 ms	47548 KB	Output is correct
127	Correct	26 ms	47512 KB	Output is correct
128	Correct	25 ms	47552 KB	Output is correct
129	Correct	27 ms	47484 KB	Output is correct
130	Correct	26 ms	47484 KB	Output is correct
131	Correct	25 ms	47224 KB	Output is correct
132	Correct	37 ms	51916 KB	Output is correct
133	Correct	37 ms	51668 KB	Output is correct
134	Correct	41 ms	54392 KB	Output is correct
135	Correct	40 ms	55516 KB	Output is correct
136	Correct	44 ms	55580 KB	Output is correct
137	Correct	38 ms	51868 KB	Output is correct
138	Correct	37 ms	51600 KB	Output is correct
139	Correct	45 ms	57980 KB	Output is correct
140	Correct	36 ms	50960 KB	Output is correct
141	Correct	40 ms	51680 KB	Output is correct
142	Correct	41 ms	51912 KB	Output is correct
143	Correct	37 ms	51660 KB	Output is correct
144	Correct	39 ms	53040 KB	Output is correct
145	Correct	40 ms	52100 KB	Output is correct
146	Correct	44 ms	55904 KB	Output is correct
147	Correct	47 ms	52868 KB	Output is correct
148	Correct	35 ms	51276 KB	Output is correct
149	Correct	39 ms	56616 KB	Output is correct
150	Correct	40 ms	57580 KB	Output is correct
151	Correct	39 ms	55540 KB	Output is correct
152	Correct	353 ms	160096 KB	Output is correct
153	Correct	375 ms	164544 KB	Output is correct
154	Correct	357 ms	158920 KB	Output is correct
155	Correct	435 ms	197968 KB	Output is correct
156	Correct	324 ms	176392 KB	Output is correct
157	Correct	315 ms	147528 KB	Output is correct
158	Correct	335 ms	179864 KB	Output is correct
159	Correct	477 ms	275152 KB	Output is correct
160	Correct	452 ms	257336 KB	Output is correct
161	Correct	299 ms	144184 KB	Output is correct
162	Correct	302 ms	149216 KB	Output is correct