oj.uz

Submission #417282

# Submission time Handle Problem Language Result Execution time Memory
417282 2021-06-03T14:20:25 Z pavement Event Hopping 2 (JOI21_event2) C++17
100 / 100
 609 ms 304636 KB 
#include <bits/stdc++.h>
#include <ext/pb_ds/assoc_container.hpp>
#include <ext/pb_ds/tree_policy.hpp>
using namespace std;
using namespace __gnu_pbds;
#ifdef _WIN32
#define getchar_unlocked _getchar_nolock
#endif
#define int long long
#define mp make_pair
#define mt make_tuple
#define pb push_back
#define ppb pop_back
#define eb emplace_back
#define g0(a) get<0>(a)
#define g1(a) get<1>(a)
#define g2(a) get<2>(a)
#define g3(a) get<3>(a)
mt19937 rng(chrono::steady_clock::now().time_since_epoch().count());
typedef double db;
typedef long long ll;
typedef long double ld;
typedef pair<int, int> ii;
typedef tuple<int, int, int> iii;
typedef tuple<int, int, int, int> iiii;
typedef tree<iii, null_type, greater<iii>, rb_tree_tag, tree_order_statistics_node_update> ordered_set;

int N, K, curr, L[500005], R[500005], dep[500005], anc[500005][25];
bool in[500005];
ii mx[500005], prec[500005];
set<ii> untaken;
vector<int> v, adj[500005];
vector<ii> vec[500005];
gp_hash_table<int, int> chc[500005];

void dfs(int n, int e = -1) {
	anc[n][0] = e;
	for (int i = 1; i <= 17; i++)
		if (anc[n][i - 1] != -1) anc[n][i] = anc[anc[n][i - 1]][i - 1];
	for (auto u : adj[n]) if (u != e) {
		dep[u] = dep[n] + 1;
		dfs(u, n);
	}
}

int get(int l, int r) {
	if (chc[l].find(r) != chc[l].end()) return chc[l][r];
	auto tmp = prec[l];
	if (tmp.second == LLONG_MAX) return 0;
	int curr = tmp.second;
	if (R[curr] > r) return 0;
	for (int i = 17; i >= 0; i--)
		if (anc[curr][i] != -1 && R[anc[curr][i]] <= r) curr = anc[curr][i];
	return chc[l][r] = dep[mx[l].second] - dep[curr] + 1;
}

int forceadd(int x, bool b = 0) {
	auto it = untaken.lower_bound(mp(R[x], 0ll));
	if (it == untaken.begin()) return -1;
	--it;
	if (it->first <= L[x] && R[x] <= it->second) {
		if (b == 1) {
			untaken.emplace(it->first, L[x]);
			untaken.emplace(R[x], it->second);
			untaken.erase(it);
		}
		int tmp = 1 + curr + -get(it->first, it->second) + get(it->first, L[x]) + get(R[x], it->second);
		if (b) curr = tmp;
		return tmp;
	} else return -1;
}

main() {
	memset(anc, -1, sizeof anc);
	ios::sync_with_stdio(0);
	cin.tie(0);
	cin >> N >> K;
	for (int i = 1; i <= N; i++) cin >> L[i] >> R[i], v.pb(L[i]), v.pb(R[i]);
	sort(v.begin(), v.end());
	v.erase(unique(v.begin(), v.end()), v.end());
	for (int i = 1; i <= N; i++) {
		L[i] = lower_bound(v.begin(), v.end(), L[i]) - v.begin() + 1;
		R[i] = lower_bound(v.begin(), v.end(), R[i]) - v.begin() + 1;
		vec[L[i]].eb(R[i], i);
	}
	for (int i = 2 * N; i >= 1; i--) {
		prec[i] = mp(LLONG_MAX, LLONG_MAX);
		if (i < 2 * N) prec[i] = prec[i + 1];
		for (auto j : vec[i]) prec[i] = min(prec[i], j);
	}
	for (int i = 1; i <= N; i++) {
		auto tmp = prec[R[i]];
		if (tmp.second != LLONG_MAX) {
			assert(R[i] <= L[tmp.second]);
			adj[tmp.second].pb(i);
			in[i] = 1;
		}
	}
	for (int i = 1; i <= N; i++)
		if (!in[i])
			dfs(i);
	for (int i = 1; i <= 2 * N; i++)
		mx[L[i]] = max(mx[L[i]], mp(dep[i] + 1, i));
	for (int i = 2 * N; i >= 1; i--) mx[i] = max(mx[i], mx[i + 1]);
	untaken.emplace(1, 2 * N);
	curr = get(1, 2 * N);
	if (curr < K) return cout << "-1\n", 0;
	for (int i = 1, cnt = 0; i <= N; i++) {
		int x = forceadd(i);
		if (x >= K) {
			cout << i << '\n';
			cnt++;
			if (cnt == K) return 0;
			forceadd(i, 1);
		}
	}
}

Compilation message

event2.cpp:73:1: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type]
   73 | main() {
      | ^~~~

Subtask #1
7.0 / 7.0

# Verdict Execution time Memory Grader output
1 Correct 196 ms 274244 KB Output is correct
2 Correct 184 ms 274292 KB Output is correct
3 Correct 207 ms 274316 KB Output is correct
4 Correct 397 ms 301416 KB Output is correct
5 Correct 374 ms 303024 KB Output is correct
6 Correct 403 ms 302628 KB Output is correct
7 Correct 365 ms 301964 KB Output is correct
8 Correct 380 ms 303268 KB Output is correct
9 Correct 364 ms 302896 KB Output is correct
10 Correct 410 ms 302592 KB Output is correct
11 Correct 367 ms 302052 KB Output is correct
12 Correct 359 ms 298272 KB Output is correct
13 Correct 352 ms 298160 KB Output is correct
14 Correct 341 ms 297908 KB Output is correct
15 Correct 335 ms 297504 KB Output is correct
16 Correct 288 ms 292688 KB Output is correct
17 Correct 290 ms 292656 KB Output is correct
18 Correct 283 ms 292528 KB Output is correct
19 Correct 272 ms 291104 KB Output is correct
20 Correct 271 ms 291204 KB Output is correct
21 Correct 273 ms 291132 KB Output is correct
22 Correct 288 ms 290780 KB Output is correct
23 Correct 276 ms 290808 KB Output is correct
24 Correct 271 ms 290864 KB Output is correct
25 Correct 302 ms 290620 KB Output is correct
26 Correct 280 ms 290604 KB Output is correct
27 Correct 280 ms 290660 KB Output is correct
28 Correct 299 ms 296864 KB Output is correct
29 Correct 277 ms 294332 KB Output is correct
30 Correct 277 ms 291884 KB Output is correct
31 Correct 265 ms 290992 KB Output is correct
32 Correct 272 ms 290760 KB Output is correct
33 Correct 289 ms 290604 KB Output is correct
34 Correct 348 ms 296796 KB Output is correct
35 Correct 313 ms 295932 KB Output is correct
36 Correct 310 ms 295140 KB Output is correct
37 Correct 346 ms 296960 KB Output is correct
38 Correct 341 ms 296756 KB Output is correct
39 Correct 326 ms 296804 KB Output is correct
40 Correct 331 ms 296504 KB Output is correct
41 Correct 322 ms 296580 KB Output is correct
42 Correct 280 ms 293552 KB Output is correct
43 Correct 349 ms 296872 KB Output is correct
44 Correct 338 ms 296756 KB Output is correct
45 Correct 342 ms 296488 KB Output is correct
46 Correct 333 ms 296448 KB Output is correct

Subtask #2
1.0 / 1.0

# Verdict Execution time Memory Grader output
1 Correct 189 ms 274244 KB Output is correct
2 Correct 185 ms 274304 KB Output is correct
3 Correct 183 ms 274376 KB Output is correct
4 Correct 188 ms 274296 KB Output is correct
5 Correct 187 ms 274248 KB Output is correct
6 Correct 191 ms 274320 KB Output is correct
7 Correct 185 ms 274312 KB Output is correct
8 Correct 186 ms 274332 KB Output is correct
9 Correct 189 ms 274372 KB Output is correct
10 Correct 190 ms 274320 KB Output is correct
11 Correct 183 ms 274284 KB Output is correct
12 Correct 182 ms 274200 KB Output is correct
13 Correct 188 ms 274232 KB Output is correct
14 Correct 184 ms 274252 KB Output is correct
15 Correct 186 ms 274320 KB Output is correct
16 Correct 188 ms 274312 KB Output is correct
17 Correct 187 ms 274372 KB Output is correct
18 Correct 211 ms 274220 KB Output is correct
19 Correct 184 ms 274244 KB Output is correct
20 Correct 189 ms 274320 KB Output is correct
21 Correct 191 ms 274216 KB Output is correct
22 Correct 189 ms 274244 KB Output is correct
23 Correct 185 ms 274268 KB Output is correct
24 Correct 199 ms 274244 KB Output is correct
25 Correct 191 ms 274244 KB Output is correct
26 Correct 189 ms 274248 KB Output is correct
27 Correct 189 ms 274376 KB Output is correct

Subtask #3
31.0 / 31.0

# Verdict Execution time Memory Grader output
1 Correct 189 ms 274244 KB Output is correct
2 Correct 185 ms 274304 KB Output is correct
3 Correct 183 ms 274376 KB Output is correct
4 Correct 188 ms 274296 KB Output is correct
5 Correct 187 ms 274248 KB Output is correct
6 Correct 191 ms 274320 KB Output is correct
7 Correct 185 ms 274312 KB Output is correct
8 Correct 186 ms 274332 KB Output is correct
9 Correct 189 ms 274372 KB Output is correct
10 Correct 190 ms 274320 KB Output is correct
11 Correct 183 ms 274284 KB Output is correct
12 Correct 182 ms 274200 KB Output is correct
13 Correct 188 ms 274232 KB Output is correct
14 Correct 184 ms 274252 KB Output is correct
15 Correct 186 ms 274320 KB Output is correct
16 Correct 188 ms 274312 KB Output is correct
17 Correct 187 ms 274372 KB Output is correct
18 Correct 211 ms 274220 KB Output is correct
19 Correct 184 ms 274244 KB Output is correct
20 Correct 189 ms 274320 KB Output is correct
21 Correct 191 ms 274216 KB Output is correct
22 Correct 189 ms 274244 KB Output is correct
23 Correct 185 ms 274268 KB Output is correct
24 Correct 199 ms 274244 KB Output is correct
25 Correct 191 ms 274244 KB Output is correct
26 Correct 189 ms 274248 KB Output is correct
27 Correct 189 ms 274376 KB Output is correct
28 Correct 189 ms 274780 KB Output is correct
29 Correct 185 ms 274668 KB Output is correct
30 Correct 196 ms 274856 KB Output is correct
31 Correct 191 ms 274756 KB Output is correct
32 Correct 188 ms 274744 KB Output is correct
33 Correct 191 ms 274732 KB Output is correct
34 Correct 194 ms 274768 KB Output is correct
35 Correct 191 ms 275140 KB Output is correct
36 Correct 190 ms 275136 KB Output is correct
37 Correct 193 ms 275004 KB Output is correct
38 Correct 197 ms 274888 KB Output is correct
39 Correct 192 ms 275092 KB Output is correct
40 Correct 194 ms 275100 KB Output is correct
41 Correct 203 ms 275012 KB Output is correct
42 Correct 196 ms 274852 KB Output is correct
43 Correct 197 ms 274884 KB Output is correct
44 Correct 193 ms 274808 KB Output is correct
45 Correct 201 ms 274860 KB Output is correct
46 Correct 194 ms 274712 KB Output is correct
47 Correct 193 ms 274884 KB Output is correct
48 Correct 194 ms 274768 KB Output is correct
49 Correct 188 ms 274720 KB Output is correct
50 Correct 189 ms 274792 KB Output is correct
51 Correct 193 ms 274820 KB Output is correct
52 Correct 190 ms 274724 KB Output is correct
53 Correct 188 ms 274824 KB Output is correct
54 Correct 188 ms 274768 KB Output is correct
55 Correct 189 ms 275140 KB Output is correct
56 Correct 189 ms 275132 KB Output is correct
57 Correct 190 ms 275136 KB Output is correct
58 Correct 188 ms 275052 KB Output is correct
59 Correct 193 ms 275076 KB Output is correct
60 Correct 191 ms 275092 KB Output is correct
61 Correct 190 ms 275140 KB Output is correct
62 Correct 185 ms 275140 KB Output is correct
63 Correct 189 ms 275140 KB Output is correct
64 Correct 184 ms 274908 KB Output is correct

Subtask #4
61.0 / 61.0

# Verdict Execution time Memory Grader output
1 Correct 196 ms 274244 KB Output is correct
2 Correct 184 ms 274292 KB Output is correct
3 Correct 207 ms 274316 KB Output is correct
4 Correct 397 ms 301416 KB Output is correct
5 Correct 374 ms 303024 KB Output is correct
6 Correct 403 ms 302628 KB Output is correct
7 Correct 365 ms 301964 KB Output is correct
8 Correct 380 ms 303268 KB Output is correct
9 Correct 364 ms 302896 KB Output is correct
10 Correct 410 ms 302592 KB Output is correct
11 Correct 367 ms 302052 KB Output is correct
12 Correct 359 ms 298272 KB Output is correct
13 Correct 352 ms 298160 KB Output is correct
14 Correct 341 ms 297908 KB Output is correct
15 Correct 335 ms 297504 KB Output is correct
16 Correct 288 ms 292688 KB Output is correct
17 Correct 290 ms 292656 KB Output is correct
18 Correct 283 ms 292528 KB Output is correct
19 Correct 272 ms 291104 KB Output is correct
20 Correct 271 ms 291204 KB Output is correct
21 Correct 273 ms 291132 KB Output is correct
22 Correct 288 ms 290780 KB Output is correct
23 Correct 276 ms 290808 KB Output is correct
24 Correct 271 ms 290864 KB Output is correct
25 Correct 302 ms 290620 KB Output is correct
26 Correct 280 ms 290604 KB Output is correct
27 Correct 280 ms 290660 KB Output is correct
28 Correct 299 ms 296864 KB Output is correct
29 Correct 277 ms 294332 KB Output is correct
30 Correct 277 ms 291884 KB Output is correct
31 Correct 265 ms 290992 KB Output is correct
32 Correct 272 ms 290760 KB Output is correct
33 Correct 289 ms 290604 KB Output is correct
34 Correct 348 ms 296796 KB Output is correct
35 Correct 313 ms 295932 KB Output is correct
36 Correct 310 ms 295140 KB Output is correct
37 Correct 346 ms 296960 KB Output is correct
38 Correct 341 ms 296756 KB Output is correct
39 Correct 326 ms 296804 KB Output is correct
40 Correct 331 ms 296504 KB Output is correct
41 Correct 322 ms 296580 KB Output is correct
42 Correct 280 ms 293552 KB Output is correct
43 Correct 349 ms 296872 KB Output is correct
44 Correct 338 ms 296756 KB Output is correct
45 Correct 342 ms 296488 KB Output is correct
46 Correct 333 ms 296448 KB Output is correct
47 Correct 189 ms 274244 KB Output is correct
48 Correct 185 ms 274304 KB Output is correct
49 Correct 183 ms 274376 KB Output is correct
50 Correct 188 ms 274296 KB Output is correct
51 Correct 187 ms 274248 KB Output is correct
52 Correct 191 ms 274320 KB Output is correct
53 Correct 185 ms 274312 KB Output is correct
54 Correct 186 ms 274332 KB Output is correct
55 Correct 189 ms 274372 KB Output is correct
56 Correct 190 ms 274320 KB Output is correct
57 Correct 183 ms 274284 KB Output is correct
58 Correct 182 ms 274200 KB Output is correct
59 Correct 188 ms 274232 KB Output is correct
60 Correct 184 ms 274252 KB Output is correct
61 Correct 186 ms 274320 KB Output is correct
62 Correct 188 ms 274312 KB Output is correct
63 Correct 187 ms 274372 KB Output is correct
64 Correct 211 ms 274220 KB Output is correct
65 Correct 184 ms 274244 KB Output is correct
66 Correct 189 ms 274320 KB Output is correct
67 Correct 191 ms 274216 KB Output is correct
68 Correct 189 ms 274244 KB Output is correct
69 Correct 185 ms 274268 KB Output is correct
70 Correct 199 ms 274244 KB Output is correct
71 Correct 191 ms 274244 KB Output is correct
72 Correct 189 ms 274248 KB Output is correct
73 Correct 189 ms 274376 KB Output is correct
74 Correct 189 ms 274780 KB Output is correct
75 Correct 185 ms 274668 KB Output is correct
76 Correct 196 ms 274856 KB Output is correct
77 Correct 191 ms 274756 KB Output is correct
78 Correct 188 ms 274744 KB Output is correct
79 Correct 191 ms 274732 KB Output is correct
80 Correct 194 ms 274768 KB Output is correct
81 Correct 191 ms 275140 KB Output is correct
82 Correct 190 ms 275136 KB Output is correct
83 Correct 193 ms 275004 KB Output is correct
84 Correct 197 ms 274888 KB Output is correct
85 Correct 192 ms 275092 KB Output is correct
86 Correct 194 ms 275100 KB Output is correct
87 Correct 203 ms 275012 KB Output is correct
88 Correct 196 ms 274852 KB Output is correct
89 Correct 197 ms 274884 KB Output is correct
90 Correct 193 ms 274808 KB Output is correct
91 Correct 201 ms 274860 KB Output is correct
92 Correct 194 ms 274712 KB Output is correct
93 Correct 193 ms 274884 KB Output is correct
94 Correct 194 ms 274768 KB Output is correct
95 Correct 188 ms 274720 KB Output is correct
96 Correct 189 ms 274792 KB Output is correct
97 Correct 193 ms 274820 KB Output is correct
98 Correct 190 ms 274724 KB Output is correct
99 Correct 188 ms 274824 KB Output is correct
100 Correct 188 ms 274768 KB Output is correct
101 Correct 189 ms 275140 KB Output is correct
102 Correct 189 ms 275132 KB Output is correct
103 Correct 190 ms 275136 KB Output is correct
104 Correct 188 ms 275052 KB Output is correct
105 Correct 193 ms 275076 KB Output is correct
106 Correct 191 ms 275092 KB Output is correct
107 Correct 190 ms 275140 KB Output is correct
108 Correct 185 ms 275140 KB Output is correct
109 Correct 189 ms 275140 KB Output is correct
110 Correct 184 ms 274908 KB Output is correct
111 Correct 324 ms 290928 KB Output is correct
112 Correct 332 ms 291020 KB Output is correct
113 Correct 329 ms 290928 KB Output is correct
114 Correct 319 ms 290856 KB Output is correct
115 Correct 315 ms 290888 KB Output is correct
116 Correct 312 ms 290952 KB Output is correct
117 Correct 306 ms 291024 KB Output is correct
118 Correct 609 ms 304636 KB Output is correct
119 Correct 583 ms 303920 KB Output is correct
120 Correct 488 ms 298272 KB Output is correct
121 Correct 356 ms 294484 KB Output is correct
122 Correct 516 ms 299300 KB Output is correct
123 Correct 501 ms 298928 KB Output is correct
124 Correct 482 ms 298288 KB Output is correct
125 Correct 360 ms 294416 KB Output is correct
126 Correct 388 ms 293488 KB Output is correct
127 Correct 389 ms 293168 KB Output is correct
128 Correct 378 ms 292768 KB Output is correct
129 Correct 346 ms 291944 KB Output is correct
130 Correct 346 ms 291980 KB Output is correct
131 Correct 354 ms 291508 KB Output is correct
132 Correct 348 ms 291248 KB Output is correct
133 Correct 351 ms 291124 KB Output is correct
134 Correct 342 ms 291688 KB Output is correct
135 Correct 335 ms 291268 KB Output is correct
136 Correct 343 ms 290992 KB Output is correct
137 Correct 322 ms 290976 KB Output is correct
138 Correct 328 ms 291376 KB Output is correct
139 Correct 334 ms 290984 KB Output is correct
140 Correct 321 ms 290976 KB Output is correct
141 Correct 333 ms 290876 KB Output is correct
142 Correct 397 ms 304396 KB Output is correct
143 Correct 416 ms 304304 KB Output is correct
144 Correct 386 ms 304312 KB Output is correct
145 Correct 358 ms 304176 KB Output is correct
146 Correct 367 ms 304100 KB Output is correct
147 Correct 358 ms 303916 KB Output is correct
148 Correct 389 ms 303732 KB Output is correct
149 Correct 351 ms 303616 KB Output is correct
150 Correct 375 ms 303408 KB Output is correct
151 Correct 347 ms 302744 KB Output is correct
152 Correct 286 ms 297348 KB Output is correct
153 Correct 366 ms 304264 KB Output is correct
154 Correct 370 ms 304068 KB Output is correct
155 Correct 372 ms 303876 KB Output is correct
156 Correct 367 ms 303876 KB Output is correct
157 Correct 379 ms 303620 KB Output is correct
158 Correct 351 ms 303512 KB Output is correct
159 Correct 343 ms 302840 KB Output is correct
160 Correct 280 ms 297352 KB Output is correct
161 Correct 532 ms 297608 KB Output is correct
162 Correct 526 ms 297520 KB Output is correct
163 Correct 490 ms 297324 KB Output is correct
164 Correct 527 ms 297372 KB Output is correct
165 Correct 515 ms 297072 KB Output is correct
166 Correct 297 ms 293672 KB Output is correct
167 Correct 338 ms 296820 KB Output is correct
168 Correct 353 ms 296676 KB Output is correct
169 Correct 344 ms 296520 KB Output is correct
170 Correct 333 ms 296424 KB Output is correct
171 Correct 329 ms 296252 KB Output is correct
172 Correct 360 ms 300452 KB Output is correct
173 Correct 560 ms 300076 KB Output is correct
174 Correct 534 ms 300128 KB Output is correct
175 Correct 504 ms 299692 KB Output is correct
176 Correct 472 ms 298504 KB Output is correct