답안 #465338

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
465338	2021-08-15T15:28:55 Z	AmShZ	The short shank; Redemption (BOI21_prison)	C++17	100 / 100	1993 ms	318864 KB

prison

//khodaya khodet komak kon
#pragma GCC optimize("O2")
# include <bits/stdc++.h>

using namespace std;

typedef long long                                        ll;
typedef long double                                      ld;
typedef pair <int, int>                                  pii;
typedef pair <pii, int>                                  ppi;
typedef pair <int, pii>                                  pip;
typedef pair <pii, pii>                                  ppp;
typedef pair <ll, ll>                                    pll;

# define A                                               first
# define B                                               second
# define endl                                            '\n'
# define sep                                             ' '
# define all(x)                                          x.begin(), x.end()
# define kill(x)                                         return cout << x << endl, 0
# define SZ(x)                                           int(x.size())
# define lc                                              id << 1
# define rc                                              id << 1 | 1
# define fast_io                                         ios::sync_with_stdio(0);cin.tie(0); cout.tie(0);

ll power(ll a, ll b, ll md) {return (!b ? 1 : (b & 1 ? a * power(a * a % md, b / 2, md) % md : power(a * a % md, b / 2, md) % md));}

const int xn = 2e6 + 10;
const int xm = - 20 + 10;
const int sq = 320;
const int inf = 1e9 + 10;
const ll INF = 1e18 + 10;
const ld eps = 1e-15;
const int mod = 1e9 + 7;//998244353;
const int base = 257;

int n, D, T, a[xn], L[xn], ans = - 1, stm[xn];
int par[xn], ftm[xn], TM, m = 1, P[xn], lazy[xn << 2];
pii seg[xn << 2];
set <int> st;
vector <int> Q[xn], adj[xn];
bool mark[xn];

void solve(int v = 1, int l = 1, int r = n + 1){
	if (r <= l)
		return;
	int pt = r - 1;
	while (l <= pt){
		if (L[pt] == pt || !L[pt]){
			ans += !L[pt];
			-- pt;
			continue;
		}
		adj[v].push_back(++ m);
		solve(m, L[pt], pt);
		pt = L[pt] - 1;
	}
}
void preDFS(int v){
	P[TM] = v;
	stm[v] = TM ++;
	for (int u : adj[v])
		par[u] = v, preDFS(u);
	ftm[v] = TM;
}
void shift(int id, int l, int r){
	if (!lazy[id])
		return;
	seg[id].A += lazy[id];
	if (1 < r - l){
		lazy[lc] += lazy[id];
		lazy[rc] += lazy[id];
	}
	lazy[id] = 0;
}
void update(int id, int l, int r, int ql, int qr, int val){
	shift(id, l, r);
	if (qr <= l || r <= ql || qr <= ql)
		return;
	if (ql <= l && r <= qr){
		lazy[id] += val;
		shift(id, l, r);
		return;
	}
	int mid = l + r >> 1;
	update(lc, l, mid, ql, qr, val);
	update(rc, mid, r, ql, qr, val);
	seg[id] = max(seg[lc], seg[rc]);
}
void build(int id, int l, int r){
	if (r - l == 1){
		seg[id].B = P[l];
		return;
	}
	int mid = l + r >> 1;
	build(lc, l, mid), build(rc, mid, r);
	seg[id] = seg[lc];
}

int main(){
	fast_io;

	cin >> n >> D >> T;
	if (n == 1){
		if (a[1] <= T)
			kill(1);
		kill(0);
	}
	for (int i = 1; i <= n; ++ i){
		cin >> a[i];
		if (a[i] <= T){
			st.insert(- i);
			Q[min(n, i + T - a[i])].push_back(i);
		}
		if (SZ(st))
			L[i] = - *st.begin();
		for (int x : Q[i])
			st.erase(- x);
	}
	solve();
	preDFS(1);
	build(1, 0, TM);
	for (int i = 1; i <= m; ++ i)
		update(1, 0, TM, stm[i], ftm[i], 1);
	while (D --){
		int v = seg[1].B;
		if (seg[1].A < 1)
			break;
		while (!mark[v] && v){
			mark[v] = true;
			++ ans;
			update(1, 0, TM, stm[v], ftm[v], - 1);
			v = par[v];
		}
	}
	cout << n - ans << endl;

	return 0;
}

Compilation message

prison.cpp: In function 'void update(int, int, int, int, int, int)':
prison.cpp:85:14: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
   85 |  int mid = l + r >> 1;
      |            ~~^~~
prison.cpp: In function 'void build(int, int, int)':
prison.cpp:95:14: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
   95 |  int mid = l + r >> 1;
      |            ~~^~~

Subtask #1

15.0 / 15.0

#	결과	실행 시간	메모리	Grader output
1	Correct	54 ms	94276 KB	Output is correct
2	Correct	54 ms	94228 KB	Output is correct
3	Correct	54 ms	94284 KB	Output is correct
4	Correct	56 ms	94544 KB	Output is correct
5	Correct	54 ms	94332 KB	Output is correct
6	Correct	54 ms	94288 KB	Output is correct
7	Correct	58 ms	94216 KB	Output is correct
8	Correct	55 ms	94244 KB	Output is correct
9	Correct	56 ms	94284 KB	Output is correct
10	Correct	55 ms	94252 KB	Output is correct
11	Correct	54 ms	94208 KB	Output is correct

Subtask #2

10.0 / 10.0

#	결과	실행 시간	메모리	Grader output
1	Correct	55 ms	94276 KB	Output is correct
2	Correct	433 ms	120496 KB	Output is correct
3	Correct	306 ms	123796 KB	Output is correct
4	Correct	350 ms	126864 KB	Output is correct
5	Correct	337 ms	127500 KB	Output is correct
6	Correct	247 ms	116304 KB	Output is correct
7	Correct	586 ms	157788 KB	Output is correct
8	Correct	278 ms	119032 KB	Output is correct

Subtask #3

20.0 / 20.0

#	결과	실행 시간	메모리	Grader output
1	Correct	54 ms	94276 KB	Output is correct
2	Correct	54 ms	94228 KB	Output is correct
3	Correct	54 ms	94284 KB	Output is correct
4	Correct	56 ms	94544 KB	Output is correct
5	Correct	54 ms	94332 KB	Output is correct
6	Correct	54 ms	94288 KB	Output is correct
7	Correct	58 ms	94216 KB	Output is correct
8	Correct	55 ms	94244 KB	Output is correct
9	Correct	56 ms	94284 KB	Output is correct
10	Correct	55 ms	94252 KB	Output is correct
11	Correct	54 ms	94208 KB	Output is correct
12	Correct	55 ms	94232 KB	Output is correct
13	Correct	60 ms	94276 KB	Output is correct
14	Correct	55 ms	94276 KB	Output is correct
15	Correct	59 ms	94316 KB	Output is correct
16	Correct	55 ms	94288 KB	Output is correct
17	Correct	55 ms	94260 KB	Output is correct
18	Correct	55 ms	94288 KB	Output is correct
19	Correct	55 ms	94272 KB	Output is correct
20	Correct	55 ms	94240 KB	Output is correct
21	Correct	55 ms	94328 KB	Output is correct
22	Correct	54 ms	94308 KB	Output is correct
23	Correct	57 ms	94456 KB	Output is correct
24	Correct	57 ms	94676 KB	Output is correct
25	Correct	62 ms	94572 KB	Output is correct
26	Correct	60 ms	94492 KB	Output is correct
27	Correct	81 ms	94532 KB	Output is correct
28	Correct	58 ms	94716 KB	Output is correct
29	Correct	58 ms	94472 KB	Output is correct
30	Correct	54 ms	94492 KB	Output is correct
31	Correct	58 ms	94484 KB	Output is correct
32	Correct	54 ms	94416 KB	Output is correct
33	Correct	56 ms	94420 KB	Output is correct
34	Correct	57 ms	94540 KB	Output is correct
35	Correct	60 ms	94496 KB	Output is correct

Subtask #4

10.0 / 10.0

#	결과	실행 시간	메모리	Grader output
1	Correct	55 ms	94228 KB	Output is correct
2	Correct	92 ms	98756 KB	Output is correct
3	Correct	97 ms	98956 KB	Output is correct
4	Correct	123 ms	100816 KB	Output is correct
5	Correct	118 ms	102032 KB	Output is correct
6	Correct	136 ms	102112 KB	Output is correct
7	Correct	81 ms	97356 KB	Output is correct
8	Correct	79 ms	97172 KB	Output is correct
9	Correct	119 ms	104960 KB	Output is correct
10	Correct	80 ms	98256 KB	Output is correct

Subtask #5

25.0 / 25.0

#	결과	실행 시간	메모리	Grader output
1	Correct	54 ms	94276 KB	Output is correct
2	Correct	54 ms	94228 KB	Output is correct
3	Correct	54 ms	94284 KB	Output is correct
4	Correct	56 ms	94544 KB	Output is correct
5	Correct	54 ms	94332 KB	Output is correct
6	Correct	54 ms	94288 KB	Output is correct
7	Correct	58 ms	94216 KB	Output is correct
8	Correct	55 ms	94244 KB	Output is correct
9	Correct	56 ms	94284 KB	Output is correct
10	Correct	55 ms	94252 KB	Output is correct
11	Correct	54 ms	94208 KB	Output is correct
12	Correct	55 ms	94232 KB	Output is correct
13	Correct	60 ms	94276 KB	Output is correct
14	Correct	55 ms	94276 KB	Output is correct
15	Correct	59 ms	94316 KB	Output is correct
16	Correct	55 ms	94288 KB	Output is correct
17	Correct	55 ms	94260 KB	Output is correct
18	Correct	55 ms	94288 KB	Output is correct
19	Correct	55 ms	94272 KB	Output is correct
20	Correct	55 ms	94240 KB	Output is correct
21	Correct	55 ms	94328 KB	Output is correct
22	Correct	54 ms	94308 KB	Output is correct
23	Correct	57 ms	94456 KB	Output is correct
24	Correct	57 ms	94676 KB	Output is correct
25	Correct	62 ms	94572 KB	Output is correct
26	Correct	60 ms	94492 KB	Output is correct
27	Correct	81 ms	94532 KB	Output is correct
28	Correct	58 ms	94716 KB	Output is correct
29	Correct	58 ms	94472 KB	Output is correct
30	Correct	54 ms	94492 KB	Output is correct
31	Correct	58 ms	94484 KB	Output is correct
32	Correct	54 ms	94416 KB	Output is correct
33	Correct	56 ms	94420 KB	Output is correct
34	Correct	57 ms	94540 KB	Output is correct
35	Correct	60 ms	94496 KB	Output is correct
36	Correct	55 ms	94228 KB	Output is correct
37	Correct	92 ms	98756 KB	Output is correct
38	Correct	97 ms	98956 KB	Output is correct
39	Correct	123 ms	100816 KB	Output is correct
40	Correct	118 ms	102032 KB	Output is correct
41	Correct	136 ms	102112 KB	Output is correct
42	Correct	81 ms	97356 KB	Output is correct
43	Correct	79 ms	97172 KB	Output is correct
44	Correct	119 ms	104960 KB	Output is correct
45	Correct	80 ms	98256 KB	Output is correct
46	Correct	54 ms	94272 KB	Output is correct
47	Correct	54 ms	94292 KB	Output is correct
48	Correct	57 ms	94320 KB	Output is correct
49	Correct	57 ms	94208 KB	Output is correct
50	Correct	63 ms	94248 KB	Output is correct
51	Correct	61 ms	94264 KB	Output is correct
52	Correct	56 ms	94308 KB	Output is correct
53	Correct	55 ms	94316 KB	Output is correct
54	Correct	53 ms	94276 KB	Output is correct
55	Correct	54 ms	94252 KB	Output is correct
56	Correct	54 ms	94216 KB	Output is correct
57	Correct	56 ms	94532 KB	Output is correct
58	Correct	57 ms	94636 KB	Output is correct
59	Correct	56 ms	94564 KB	Output is correct
60	Correct	57 ms	94432 KB	Output is correct
61	Correct	56 ms	94552 KB	Output is correct
62	Correct	58 ms	94404 KB	Output is correct
63	Correct	57 ms	94512 KB	Output is correct
64	Correct	56 ms	94396 KB	Output is correct
65	Correct	56 ms	94404 KB	Output is correct
66	Correct	56 ms	94360 KB	Output is correct
67	Correct	55 ms	94372 KB	Output is correct
68	Correct	57 ms	94536 KB	Output is correct
69	Correct	58 ms	94724 KB	Output is correct
70	Correct	56 ms	94248 KB	Output is correct
71	Correct	95 ms	98580 KB	Output is correct
72	Correct	97 ms	98960 KB	Output is correct
73	Correct	123 ms	100800 KB	Output is correct
74	Correct	127 ms	102048 KB	Output is correct
75	Correct	126 ms	102008 KB	Output is correct
76	Correct	85 ms	97348 KB	Output is correct
77	Correct	80 ms	97120 KB	Output is correct
78	Correct	121 ms	105032 KB	Output is correct
79	Correct	78 ms	98244 KB	Output is correct
80	Correct	100 ms	98896 KB	Output is correct
81	Correct	105 ms	98580 KB	Output is correct
82	Correct	109 ms	99008 KB	Output is correct
83	Correct	121 ms	100000 KB	Output is correct
84	Correct	103 ms	98952 KB	Output is correct
85	Correct	136 ms	102088 KB	Output is correct
86	Correct	108 ms	99144 KB	Output is correct
87	Correct	90 ms	97096 KB	Output is correct
88	Correct	111 ms	102312 KB	Output is correct
89	Correct	119 ms	104760 KB	Output is correct
90	Correct	111 ms	101580 KB	Output is correct

Subtask #6

20.0 / 20.0

#	결과	실행 시간	메모리	Grader output
1	Correct	54 ms	94276 KB	Output is correct
2	Correct	54 ms	94228 KB	Output is correct
3	Correct	54 ms	94284 KB	Output is correct
4	Correct	56 ms	94544 KB	Output is correct
5	Correct	54 ms	94332 KB	Output is correct
6	Correct	54 ms	94288 KB	Output is correct
7	Correct	58 ms	94216 KB	Output is correct
8	Correct	55 ms	94244 KB	Output is correct
9	Correct	56 ms	94284 KB	Output is correct
10	Correct	55 ms	94252 KB	Output is correct
11	Correct	54 ms	94208 KB	Output is correct
12	Correct	55 ms	94276 KB	Output is correct
13	Correct	433 ms	120496 KB	Output is correct
14	Correct	306 ms	123796 KB	Output is correct
15	Correct	350 ms	126864 KB	Output is correct
16	Correct	337 ms	127500 KB	Output is correct
17	Correct	247 ms	116304 KB	Output is correct
18	Correct	586 ms	157788 KB	Output is correct
19	Correct	278 ms	119032 KB	Output is correct
20	Correct	55 ms	94232 KB	Output is correct
21	Correct	60 ms	94276 KB	Output is correct
22	Correct	55 ms	94276 KB	Output is correct
23	Correct	59 ms	94316 KB	Output is correct
24	Correct	55 ms	94288 KB	Output is correct
25	Correct	55 ms	94260 KB	Output is correct
26	Correct	55 ms	94288 KB	Output is correct
27	Correct	55 ms	94272 KB	Output is correct
28	Correct	55 ms	94240 KB	Output is correct
29	Correct	55 ms	94328 KB	Output is correct
30	Correct	54 ms	94308 KB	Output is correct
31	Correct	57 ms	94456 KB	Output is correct
32	Correct	57 ms	94676 KB	Output is correct
33	Correct	62 ms	94572 KB	Output is correct
34	Correct	60 ms	94492 KB	Output is correct
35	Correct	81 ms	94532 KB	Output is correct
36	Correct	58 ms	94716 KB	Output is correct
37	Correct	58 ms	94472 KB	Output is correct
38	Correct	54 ms	94492 KB	Output is correct
39	Correct	58 ms	94484 KB	Output is correct
40	Correct	54 ms	94416 KB	Output is correct
41	Correct	56 ms	94420 KB	Output is correct
42	Correct	57 ms	94540 KB	Output is correct
43	Correct	60 ms	94496 KB	Output is correct
44	Correct	55 ms	94228 KB	Output is correct
45	Correct	92 ms	98756 KB	Output is correct
46	Correct	97 ms	98956 KB	Output is correct
47	Correct	123 ms	100816 KB	Output is correct
48	Correct	118 ms	102032 KB	Output is correct
49	Correct	136 ms	102112 KB	Output is correct
50	Correct	81 ms	97356 KB	Output is correct
51	Correct	79 ms	97172 KB	Output is correct
52	Correct	119 ms	104960 KB	Output is correct
53	Correct	80 ms	98256 KB	Output is correct
54	Correct	54 ms	94272 KB	Output is correct
55	Correct	54 ms	94292 KB	Output is correct
56	Correct	57 ms	94320 KB	Output is correct
57	Correct	57 ms	94208 KB	Output is correct
58	Correct	63 ms	94248 KB	Output is correct
59	Correct	61 ms	94264 KB	Output is correct
60	Correct	56 ms	94308 KB	Output is correct
61	Correct	55 ms	94316 KB	Output is correct
62	Correct	53 ms	94276 KB	Output is correct
63	Correct	54 ms	94252 KB	Output is correct
64	Correct	54 ms	94216 KB	Output is correct
65	Correct	56 ms	94532 KB	Output is correct
66	Correct	57 ms	94636 KB	Output is correct
67	Correct	56 ms	94564 KB	Output is correct
68	Correct	57 ms	94432 KB	Output is correct
69	Correct	56 ms	94552 KB	Output is correct
70	Correct	58 ms	94404 KB	Output is correct
71	Correct	57 ms	94512 KB	Output is correct
72	Correct	56 ms	94396 KB	Output is correct
73	Correct	56 ms	94404 KB	Output is correct
74	Correct	56 ms	94360 KB	Output is correct
75	Correct	55 ms	94372 KB	Output is correct
76	Correct	57 ms	94536 KB	Output is correct
77	Correct	58 ms	94724 KB	Output is correct
78	Correct	56 ms	94248 KB	Output is correct
79	Correct	95 ms	98580 KB	Output is correct
80	Correct	97 ms	98960 KB	Output is correct
81	Correct	123 ms	100800 KB	Output is correct
82	Correct	127 ms	102048 KB	Output is correct
83	Correct	126 ms	102008 KB	Output is correct
84	Correct	85 ms	97348 KB	Output is correct
85	Correct	80 ms	97120 KB	Output is correct
86	Correct	121 ms	105032 KB	Output is correct
87	Correct	78 ms	98244 KB	Output is correct
88	Correct	100 ms	98896 KB	Output is correct
89	Correct	105 ms	98580 KB	Output is correct
90	Correct	109 ms	99008 KB	Output is correct
91	Correct	121 ms	100000 KB	Output is correct
92	Correct	103 ms	98952 KB	Output is correct
93	Correct	136 ms	102088 KB	Output is correct
94	Correct	108 ms	99144 KB	Output is correct
95	Correct	90 ms	97096 KB	Output is correct
96	Correct	111 ms	102312 KB	Output is correct
97	Correct	119 ms	104760 KB	Output is correct
98	Correct	111 ms	101580 KB	Output is correct
99	Correct	53 ms	94260 KB	Output is correct
100	Correct	55 ms	94324 KB	Output is correct
101	Correct	56 ms	94208 KB	Output is correct
102	Correct	55 ms	94232 KB	Output is correct
103	Correct	62 ms	94236 KB	Output is correct
104	Correct	56 ms	94408 KB	Output is correct
105	Correct	56 ms	94280 KB	Output is correct
106	Correct	55 ms	94276 KB	Output is correct
107	Correct	59 ms	94316 KB	Output is correct
108	Correct	54 ms	94260 KB	Output is correct
109	Correct	57 ms	94260 KB	Output is correct
110	Correct	55 ms	94176 KB	Output is correct
111	Correct	389 ms	120520 KB	Output is correct
112	Correct	303 ms	123788 KB	Output is correct
113	Correct	362 ms	126772 KB	Output is correct
114	Correct	329 ms	127420 KB	Output is correct
115	Correct	245 ms	116248 KB	Output is correct
116	Correct	552 ms	157900 KB	Output is correct
117	Correct	295 ms	118988 KB	Output is correct
118	Correct	58 ms	94568 KB	Output is correct
119	Correct	57 ms	94444 KB	Output is correct
120	Correct	57 ms	94544 KB	Output is correct
121	Correct	58 ms	94500 KB	Output is correct
122	Correct	60 ms	94560 KB	Output is correct
123	Correct	56 ms	94532 KB	Output is correct
124	Correct	57 ms	94504 KB	Output is correct
125	Correct	57 ms	94532 KB	Output is correct
126	Correct	65 ms	94492 KB	Output is correct
127	Correct	58 ms	94412 KB	Output is correct
128	Correct	56 ms	94472 KB	Output is correct
129	Correct	56 ms	94488 KB	Output is correct
130	Correct	57 ms	94692 KB	Output is correct
131	Correct	54 ms	94276 KB	Output is correct
132	Correct	92 ms	98568 KB	Output is correct
133	Correct	92 ms	98856 KB	Output is correct
134	Correct	119 ms	100792 KB	Output is correct
135	Correct	116 ms	101952 KB	Output is correct
136	Correct	126 ms	102104 KB	Output is correct
137	Correct	95 ms	97412 KB	Output is correct
138	Correct	80 ms	97092 KB	Output is correct
139	Correct	119 ms	105028 KB	Output is correct
140	Correct	78 ms	98176 KB	Output is correct
141	Correct	103 ms	99056 KB	Output is correct
142	Correct	106 ms	98612 KB	Output is correct
143	Correct	107 ms	98900 KB	Output is correct
144	Correct	120 ms	99908 KB	Output is correct
145	Correct	104 ms	98884 KB	Output is correct
146	Correct	138 ms	102072 KB	Output is correct
147	Correct	99 ms	99172 KB	Output is correct
148	Correct	89 ms	97028 KB	Output is correct
149	Correct	110 ms	102188 KB	Output is correct
150	Correct	140 ms	104752 KB	Output is correct
151	Correct	107 ms	101560 KB	Output is correct
152	Correct	1682 ms	200444 KB	Output is correct
153	Correct	1208 ms	225364 KB	Output is correct
154	Correct	1162 ms	206540 KB	Output is correct
155	Correct	1993 ms	248548 KB	Output is correct
156	Correct	1595 ms	235920 KB	Output is correct
157	Correct	712 ms	178628 KB	Output is correct
158	Correct	1004 ms	208364 KB	Output is correct
159	Correct	1890 ms	318864 KB	Output is correct
160	Correct	1885 ms	308612 KB	Output is correct
161	Correct	951 ms	187076 KB	Output is correct
162	Correct	826 ms	189700 KB	Output is correct