oj.uz

답안 #387020

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
387020 2021-04-07T19:50:18 Z ogibogi2004 Event Hopping 2 (JOI21_event2) C++14
100 / 100
 697 ms 50788 KB 
#include<bits/stdc++.h>
using namespace std;
const int MAXN=2e5+6;
int n,k;
set<int>s;
int l[MAXN],r[MAXN];
map<int,int>mp;
vector<int>gg[MAXN];
int t[MAXN][20];
int sum=0;
int f(int l,int r)
{
	int cnt=0;
	for(int j=19;j>=0;j--)
	{
		if(t[l][j]<=r)
		{
			cnt+=(1<<j);
			l=t[l][j];
		}
	}
	return cnt;
}
set<pair<int,int> >intervals;
int main()
{
	cin>>n>>k;
	for(int i=1;i<=n;i++)
	{
		cin>>l[i]>>r[i];
		s.insert(l[i]);
		s.insert(r[i]);
	}
	int cnt=0;
	for(auto xd:s)
	{
		++cnt;
		mp[xd]=cnt;
	}
	for(int i=1;i<=n;i++)
	{
		l[i]=mp[l[i]];
		r[i]=mp[r[i]];
		gg[l[i]].push_back(r[i]);
	}
	for(int i=0;i<MAXN;i++)t[i][0]=MAXN-1;
	int minr=MAXN-1;
	for(int i=cnt;i>=1;i--)
	{
		for(auto xd:gg[i])minr=min(minr,xd);
		t[i][0]=minr;
	}
	for(int step=1;step<20;step++)
	{
		for(int i=1;i<=cnt;i++)
		{
			t[i][step]=t[t[i][step-1]][step-1];
		//	cout<<i<<" "<<step<<" "<<t[i][step]<<endl;
		}
		t[MAXN-1][step]=MAXN-1;
	}
	intervals.insert({1,cnt});
	sum=f(1,cnt);
	if(sum<k)
	{
		cout<<"-1\n";
		return 0;
	}
	vector<int>output;
	for(int i=1;i<=n;i++)
	{
		auto it=intervals.lower_bound({l[i]+1,r[i]});
		it--;
		//cout<<l[i]<<" "<<r[i]<<" "<<(*it).first<<" "<<(*it).second<<endl;
		if((*it).first>l[i]||(*it).second<r[i])continue;
		//cout<<"?\n";
		int delta=-f((*it).first,(*it).second);
		delta+=f((*it).first,l[i])+f(r[i],(*it).second);
		if(sum+delta>=k-output.size()-1)
		{
			output.push_back(i);
			sum+=delta;
			int l1=(*it).first;
			int r1=(*it).second;
			intervals.erase({l1,r1});
			intervals.insert({l1,l[i]});
			intervals.insert({r[i],r1});
			if(output.size()==k)break;
		}
		//cout<<sum<<endl;
	}
	for(auto xd:output)
	{
		cout<<xd<<endl;
	}
return 0;
}

Compilation message

event2.cpp: In function 'int main()':
event2.cpp:79:15: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   79 |   if(sum+delta>=k-output.size()-1)
      |      ~~~~~~~~~^~~~~~~~~~~~~~~~~~~
event2.cpp:88:20: warning: comparison of integer expressions of different signedness: 'std::vector<int>::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare]
   88 |    if(output.size()==k)break;
      |       ~~~~~~~~~~~~~^~~

Subtask #1
7.0 / 7.0

# 결과 실행 시간 메모리 Grader output
1 Correct 12 ms 20716 KB Output is correct
2 Correct 13 ms 20716 KB Output is correct
3 Correct 13 ms 20716 KB Output is correct
4 Correct 531 ms 50788 KB Output is correct
5 Correct 537 ms 50344 KB Output is correct
6 Correct 502 ms 50020 KB Output is correct
7 Correct 502 ms 49508 KB Output is correct
8 Correct 534 ms 50788 KB Output is correct
9 Correct 514 ms 50404 KB Output is correct
10 Correct 505 ms 50020 KB Output is correct
11 Correct 480 ms 49508 KB Output is correct
12 Correct 433 ms 48616 KB Output is correct
13 Correct 421 ms 48488 KB Output is correct
14 Correct 423 ms 48488 KB Output is correct
15 Correct 381 ms 47964 KB Output is correct
16 Correct 290 ms 46188 KB Output is correct
17 Correct 289 ms 45932 KB Output is correct
18 Correct 290 ms 45932 KB Output is correct
19 Correct 253 ms 45448 KB Output is correct
20 Correct 256 ms 45420 KB Output is correct
21 Correct 277 ms 45420 KB Output is correct
22 Correct 258 ms 45292 KB Output is correct
23 Correct 260 ms 45420 KB Output is correct
24 Correct 267 ms 45480 KB Output is correct
25 Correct 280 ms 45292 KB Output is correct
26 Correct 271 ms 45292 KB Output is correct
27 Correct 299 ms 45512 KB Output is correct
28 Correct 246 ms 45420 KB Output is correct
29 Correct 250 ms 45292 KB Output is correct
30 Correct 251 ms 45292 KB Output is correct
31 Correct 252 ms 45548 KB Output is correct
32 Correct 262 ms 45364 KB Output is correct
33 Correct 273 ms 45548 KB Output is correct
34 Correct 358 ms 47464 KB Output is correct
35 Correct 322 ms 46572 KB Output is correct
36 Correct 277 ms 45932 KB Output is correct
37 Correct 409 ms 48360 KB Output is correct
38 Correct 406 ms 48104 KB Output is correct
39 Correct 451 ms 47976 KB Output is correct
40 Correct 388 ms 47780 KB Output is correct
41 Correct 417 ms 47764 KB Output is correct
42 Correct 252 ms 45292 KB Output is correct
43 Correct 403 ms 48104 KB Output is correct
44 Correct 388 ms 47976 KB Output is correct
45 Correct 391 ms 47848 KB Output is correct
46 Correct 374 ms 47848 KB Output is correct

Subtask #2
1.0 / 1.0

# 결과 실행 시간 메모리 Grader output
1 Correct 12 ms 20716 KB Output is correct
2 Correct 12 ms 20716 KB Output is correct
3 Correct 13 ms 20716 KB Output is correct
4 Correct 13 ms 20716 KB Output is correct
5 Correct 13 ms 20716 KB Output is correct
6 Correct 13 ms 20716 KB Output is correct
7 Correct 13 ms 20716 KB Output is correct
8 Correct 12 ms 20716 KB Output is correct
9 Correct 13 ms 20716 KB Output is correct
10 Correct 14 ms 20716 KB Output is correct
11 Correct 13 ms 20716 KB Output is correct
12 Correct 15 ms 20716 KB Output is correct
13 Correct 12 ms 20716 KB Output is correct
14 Correct 12 ms 20736 KB Output is correct
15 Correct 13 ms 20716 KB Output is correct
16 Correct 13 ms 20860 KB Output is correct
17 Correct 12 ms 20716 KB Output is correct
18 Correct 13 ms 20716 KB Output is correct
19 Correct 12 ms 20716 KB Output is correct
20 Correct 12 ms 20716 KB Output is correct
21 Correct 13 ms 20716 KB Output is correct
22 Correct 13 ms 20716 KB Output is correct
23 Correct 12 ms 20716 KB Output is correct
24 Correct 12 ms 20716 KB Output is correct
25 Correct 13 ms 20736 KB Output is correct
26 Correct 13 ms 20716 KB Output is correct
27 Correct 13 ms 20716 KB Output is correct

Subtask #3
31.0 / 31.0

# 결과 실행 시간 메모리 Grader output
1 Correct 12 ms 20716 KB Output is correct
2 Correct 12 ms 20716 KB Output is correct
3 Correct 13 ms 20716 KB Output is correct
4 Correct 13 ms 20716 KB Output is correct
5 Correct 13 ms 20716 KB Output is correct
6 Correct 13 ms 20716 KB Output is correct
7 Correct 13 ms 20716 KB Output is correct
8 Correct 12 ms 20716 KB Output is correct
9 Correct 13 ms 20716 KB Output is correct
10 Correct 14 ms 20716 KB Output is correct
11 Correct 13 ms 20716 KB Output is correct
12 Correct 15 ms 20716 KB Output is correct
13 Correct 12 ms 20716 KB Output is correct
14 Correct 12 ms 20736 KB Output is correct
15 Correct 13 ms 20716 KB Output is correct
16 Correct 13 ms 20860 KB Output is correct
17 Correct 12 ms 20716 KB Output is correct
18 Correct 13 ms 20716 KB Output is correct
19 Correct 12 ms 20716 KB Output is correct
20 Correct 12 ms 20716 KB Output is correct
21 Correct 13 ms 20716 KB Output is correct
22 Correct 13 ms 20716 KB Output is correct
23 Correct 12 ms 20716 KB Output is correct
24 Correct 12 ms 20716 KB Output is correct
25 Correct 13 ms 20736 KB Output is correct
26 Correct 13 ms 20716 KB Output is correct
27 Correct 13 ms 20716 KB Output is correct
28 Correct 19 ms 21356 KB Output is correct
29 Correct 19 ms 21356 KB Output is correct
30 Correct 19 ms 21356 KB Output is correct
31 Correct 19 ms 21356 KB Output is correct
32 Correct 20 ms 21472 KB Output is correct
33 Correct 20 ms 21356 KB Output is correct
34 Correct 19 ms 21464 KB Output is correct
35 Correct 29 ms 21612 KB Output is correct
36 Correct 27 ms 21612 KB Output is correct
37 Correct 24 ms 21484 KB Output is correct
38 Correct 18 ms 21356 KB Output is correct
39 Correct 26 ms 21756 KB Output is correct
40 Correct 25 ms 21612 KB Output is correct
41 Correct 30 ms 21484 KB Output is correct
42 Correct 18 ms 21356 KB Output is correct
43 Correct 22 ms 21484 KB Output is correct
44 Correct 21 ms 21484 KB Output is correct
45 Correct 21 ms 21484 KB Output is correct
46 Correct 19 ms 21356 KB Output is correct
47 Correct 19 ms 21356 KB Output is correct
48 Correct 19 ms 21356 KB Output is correct
49 Correct 19 ms 21356 KB Output is correct
50 Correct 19 ms 21356 KB Output is correct
51 Correct 19 ms 21356 KB Output is correct
52 Correct 19 ms 21484 KB Output is correct
53 Correct 19 ms 21356 KB Output is correct
54 Correct 19 ms 21356 KB Output is correct
55 Correct 25 ms 21356 KB Output is correct
56 Correct 29 ms 21356 KB Output is correct
57 Correct 25 ms 21356 KB Output is correct
58 Correct 29 ms 21356 KB Output is correct
59 Correct 24 ms 21356 KB Output is correct
60 Correct 24 ms 21356 KB Output is correct
61 Correct 24 ms 21356 KB Output is correct
62 Correct 24 ms 21356 KB Output is correct
63 Correct 23 ms 21228 KB Output is correct
64 Correct 17 ms 21100 KB Output is correct

Subtask #4
61.0 / 61.0

# 결과 실행 시간 메모리 Grader output
1 Correct 12 ms 20716 KB Output is correct
2 Correct 13 ms 20716 KB Output is correct
3 Correct 13 ms 20716 KB Output is correct
4 Correct 531 ms 50788 KB Output is correct
5 Correct 537 ms 50344 KB Output is correct
6 Correct 502 ms 50020 KB Output is correct
7 Correct 502 ms 49508 KB Output is correct
8 Correct 534 ms 50788 KB Output is correct
9 Correct 514 ms 50404 KB Output is correct
10 Correct 505 ms 50020 KB Output is correct
11 Correct 480 ms 49508 KB Output is correct
12 Correct 433 ms 48616 KB Output is correct
13 Correct 421 ms 48488 KB Output is correct
14 Correct 423 ms 48488 KB Output is correct
15 Correct 381 ms 47964 KB Output is correct
16 Correct 290 ms 46188 KB Output is correct
17 Correct 289 ms 45932 KB Output is correct
18 Correct 290 ms 45932 KB Output is correct
19 Correct 253 ms 45448 KB Output is correct
20 Correct 256 ms 45420 KB Output is correct
21 Correct 277 ms 45420 KB Output is correct
22 Correct 258 ms 45292 KB Output is correct
23 Correct 260 ms 45420 KB Output is correct
24 Correct 267 ms 45480 KB Output is correct
25 Correct 280 ms 45292 KB Output is correct
26 Correct 271 ms 45292 KB Output is correct
27 Correct 299 ms 45512 KB Output is correct
28 Correct 246 ms 45420 KB Output is correct
29 Correct 250 ms 45292 KB Output is correct
30 Correct 251 ms 45292 KB Output is correct
31 Correct 252 ms 45548 KB Output is correct
32 Correct 262 ms 45364 KB Output is correct
33 Correct 273 ms 45548 KB Output is correct
34 Correct 358 ms 47464 KB Output is correct
35 Correct 322 ms 46572 KB Output is correct
36 Correct 277 ms 45932 KB Output is correct
37 Correct 409 ms 48360 KB Output is correct
38 Correct 406 ms 48104 KB Output is correct
39 Correct 451 ms 47976 KB Output is correct
40 Correct 388 ms 47780 KB Output is correct
41 Correct 417 ms 47764 KB Output is correct
42 Correct 252 ms 45292 KB Output is correct
43 Correct 403 ms 48104 KB Output is correct
44 Correct 388 ms 47976 KB Output is correct
45 Correct 391 ms 47848 KB Output is correct
46 Correct 374 ms 47848 KB Output is correct
47 Correct 12 ms 20716 KB Output is correct
48 Correct 12 ms 20716 KB Output is correct
49 Correct 13 ms 20716 KB Output is correct
50 Correct 13 ms 20716 KB Output is correct
51 Correct 13 ms 20716 KB Output is correct
52 Correct 13 ms 20716 KB Output is correct
53 Correct 13 ms 20716 KB Output is correct
54 Correct 12 ms 20716 KB Output is correct
55 Correct 13 ms 20716 KB Output is correct
56 Correct 14 ms 20716 KB Output is correct
57 Correct 13 ms 20716 KB Output is correct
58 Correct 15 ms 20716 KB Output is correct
59 Correct 12 ms 20716 KB Output is correct
60 Correct 12 ms 20736 KB Output is correct
61 Correct 13 ms 20716 KB Output is correct
62 Correct 13 ms 20860 KB Output is correct
63 Correct 12 ms 20716 KB Output is correct
64 Correct 13 ms 20716 KB Output is correct
65 Correct 12 ms 20716 KB Output is correct
66 Correct 12 ms 20716 KB Output is correct
67 Correct 13 ms 20716 KB Output is correct
68 Correct 13 ms 20716 KB Output is correct
69 Correct 12 ms 20716 KB Output is correct
70 Correct 12 ms 20716 KB Output is correct
71 Correct 13 ms 20736 KB Output is correct
72 Correct 13 ms 20716 KB Output is correct
73 Correct 13 ms 20716 KB Output is correct
74 Correct 19 ms 21356 KB Output is correct
75 Correct 19 ms 21356 KB Output is correct
76 Correct 19 ms 21356 KB Output is correct
77 Correct 19 ms 21356 KB Output is correct
78 Correct 20 ms 21472 KB Output is correct
79 Correct 20 ms 21356 KB Output is correct
80 Correct 19 ms 21464 KB Output is correct
81 Correct 29 ms 21612 KB Output is correct
82 Correct 27 ms 21612 KB Output is correct
83 Correct 24 ms 21484 KB Output is correct
84 Correct 18 ms 21356 KB Output is correct
85 Correct 26 ms 21756 KB Output is correct
86 Correct 25 ms 21612 KB Output is correct
87 Correct 30 ms 21484 KB Output is correct
88 Correct 18 ms 21356 KB Output is correct
89 Correct 22 ms 21484 KB Output is correct
90 Correct 21 ms 21484 KB Output is correct
91 Correct 21 ms 21484 KB Output is correct
92 Correct 19 ms 21356 KB Output is correct
93 Correct 19 ms 21356 KB Output is correct
94 Correct 19 ms 21356 KB Output is correct
95 Correct 19 ms 21356 KB Output is correct
96 Correct 19 ms 21356 KB Output is correct
97 Correct 19 ms 21356 KB Output is correct
98 Correct 19 ms 21484 KB Output is correct
99 Correct 19 ms 21356 KB Output is correct
100 Correct 19 ms 21356 KB Output is correct
101 Correct 25 ms 21356 KB Output is correct
102 Correct 29 ms 21356 KB Output is correct
103 Correct 25 ms 21356 KB Output is correct
104 Correct 29 ms 21356 KB Output is correct
105 Correct 24 ms 21356 KB Output is correct
106 Correct 24 ms 21356 KB Output is correct
107 Correct 24 ms 21356 KB Output is correct
108 Correct 24 ms 21356 KB Output is correct
109 Correct 23 ms 21228 KB Output is correct
110 Correct 17 ms 21100 KB Output is correct
111 Correct 448 ms 45292 KB Output is correct
112 Correct 450 ms 45548 KB Output is correct
113 Correct 441 ms 45548 KB Output is correct
114 Correct 464 ms 45268 KB Output is correct
115 Correct 469 ms 45296 KB Output is correct
116 Correct 460 ms 45548 KB Output is correct
117 Correct 443 ms 45292 KB Output is correct
118 Correct 691 ms 50788 KB Output is correct
119 Correct 697 ms 50060 KB Output is correct
120 Correct 532 ms 47976 KB Output is correct
121 Correct 381 ms 45408 KB Output is correct
122 Correct 580 ms 48632 KB Output is correct
123 Correct 565 ms 48488 KB Output is correct
124 Correct 535 ms 47980 KB Output is correct
125 Correct 382 ms 45548 KB Output is correct
126 Correct 439 ms 46056 KB Output is correct
127 Correct 439 ms 46188 KB Output is correct
128 Correct 452 ms 46060 KB Output is correct
129 Correct 393 ms 45548 KB Output is correct
130 Correct 458 ms 45420 KB Output is correct
131 Correct 413 ms 45420 KB Output is correct
132 Correct 452 ms 45420 KB Output is correct
133 Correct 409 ms 45420 KB Output is correct
134 Correct 442 ms 45292 KB Output is correct
135 Correct 429 ms 45292 KB Output is correct
136 Correct 411 ms 45292 KB Output is correct
137 Correct 435 ms 45292 KB Output is correct
138 Correct 408 ms 45292 KB Output is correct
139 Correct 429 ms 45292 KB Output is correct
140 Correct 402 ms 45292 KB Output is correct
141 Correct 421 ms 45548 KB Output is correct
142 Correct 491 ms 41584 KB Output is correct
143 Correct 487 ms 41572 KB Output is correct
144 Correct 490 ms 41700 KB Output is correct
145 Correct 477 ms 41700 KB Output is correct
146 Correct 475 ms 41700 KB Output is correct
147 Correct 466 ms 41572 KB Output is correct
148 Correct 462 ms 41316 KB Output is correct
149 Correct 484 ms 41232 KB Output is correct
150 Correct 446 ms 41316 KB Output is correct
151 Correct 431 ms 40548 KB Output is correct
152 Correct 181 ms 36076 KB Output is correct
153 Correct 485 ms 41704 KB Output is correct
154 Correct 488 ms 41700 KB Output is correct
155 Correct 518 ms 41444 KB Output is correct
156 Correct 471 ms 41420 KB Output is correct
157 Correct 459 ms 41316 KB Output is correct
158 Correct 454 ms 41060 KB Output is correct
159 Correct 431 ms 40548 KB Output is correct
160 Correct 184 ms 35948 KB Output is correct
161 Correct 509 ms 43624 KB Output is correct
162 Correct 501 ms 43368 KB Output is correct
163 Correct 472 ms 43368 KB Output is correct
164 Correct 479 ms 43240 KB Output is correct
165 Correct 495 ms 43008 KB Output is correct
166 Correct 246 ms 45292 KB Output is correct
167 Correct 397 ms 48104 KB Output is correct
168 Correct 401 ms 47976 KB Output is correct
169 Correct 384 ms 47848 KB Output is correct
170 Correct 378 ms 47720 KB Output is correct
171 Correct 384 ms 47480 KB Output is correct
172 Correct 405 ms 48232 KB Output is correct
173 Correct 432 ms 38728 KB Output is correct
174 Correct 456 ms 38828 KB Output is correct
175 Correct 455 ms 38760 KB Output is correct
176 Correct 407 ms 38248 KB Output is correct