답안 #527825

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
527825	2022-02-18T13:00:38 Z	Jasiekstrz	Railway Trip 2 (JOI22_ho_t4)	C++17	100 / 100	375 ms	66920 KB

Main

#include<bits/stdc++.h>
#define fi first
#define se second
using namespace std;
const int N=1e5;
const int L=20;
const int P=(1<<17);
struct Seg
{
	int l,r;
};
Seg operator+(Seg a,Seg b)
{
	return {min(a.l,b.l),max(a.r,b.r)};
}
vector<int> ev[N+10];
multiset<int> ms;
Seg jmp[N+10][L+2];
int pot;
Seg tr[L+2][2*P+10];
void buildtr(int n,int l)
{
	for(int i=1;i<=n;i++)
		tr[l][pot+i-1]=jmp[i][l];
	for(int i=pot-1;i>0;i--)
		tr[l][i]=tr[l][2*i]+tr[l][2*i+1];
	return;
}
Seg read(int it,int l,int r)
{
	Seg ans={N+1,0};
	for(l+=pot-1,r+=pot-1;l<=r;l/=2,r/=2)
	{
		if(l%2==1)
			ans=ans+tr[it][l++];
		if(r%2==0)
			ans=ans+tr[it][r--];
	}
	return ans;
}
int main()
{
	ios_base::sync_with_stdio(false);
	cin.tie(NULL);
	cout.tie(NULL);
	int n,k,m,q;
	cin>>n>>k>>m;
	for(int i=1;i<=m;i++)
	{
		int a,b;
		cin>>a>>b;
		if(a<b)
		{
			ev[a].push_back(b);
			ev[min(a+k,b+1)].push_back(-b);
		}
		else
		{
			ev[max(a-k+1,b)].push_back(b);
			ev[a+1].push_back(-b);
		}
	}
	for(int i=1;i<=n;i++)
	{
		for(auto v:ev[i])
		{
			if(v>0)
				ms.insert(v);
			else
				ms.erase(ms.find(-v));
		}
		if(ms.empty())
			jmp[i][0]={i,i};
		else
			jmp[i][0]={min(i,*ms.begin()),max(i,*prev(ms.end()))};
		//cerr<<i<<": "<<jmp[i][0].l<<" "<<jmp[i][0].r<<"\n";
	}
	for(pot=1;pot<n;pot*=2);
	buildtr(n,0);
	for(int l=1;l<=L;l++)
	{
		for(int i=1;i<=n;i++)
			jmp[i][l]=read(l-1,jmp[i][l-1].l,jmp[i][l-1].r);
		buildtr(n,l);
	}
	cin>>q;
	while(q--)
	{
		int a,b;
		cin>>a>>b;
		if(a==b)
		{
			cout<<"0\n";
			return 0;
		}
		Seg s={a,a};
		if(b<jmp[a][L].l || jmp[a][L].r<b)
		{
			cout<<"-1\n";
			continue;
		}
		int ans=0;
		for(int l=L;l>=0;l--)
		{
			Seg tmp=read(l,s.l,s.r);
			if(b<tmp.l || tmp.r<b)
			{
				s=tmp;
				ans+=(1<<l);
			}
		}
		cout<<ans+1<<"\n";
	}
	return 0;
}

Subtask #1
8.0 / 8.0

#	결과	실행 시간	메모리	Grader output
1	Correct	2 ms	3020 KB	Output is correct
2	Correct	2 ms	3020 KB	Output is correct
3	Correct	2 ms	3020 KB	Output is correct
4	Correct	2 ms	3020 KB	Output is correct
5	Correct	2 ms	3020 KB	Output is correct
6	Correct	2 ms	3020 KB	Output is correct
7	Correct	2 ms	3020 KB	Output is correct
8	Correct	2 ms	3020 KB	Output is correct
9	Correct	2 ms	3020 KB	Output is correct
10	Correct	2 ms	2764 KB	Output is correct
11	Correct	2 ms	3020 KB	Output is correct
12	Correct	2 ms	3020 KB	Output is correct

Subtask #2
8.0 / 8.0

#	결과	실행 시간	메모리	Grader output
1	Correct	2 ms	3020 KB	Output is correct
2	Correct	2 ms	3020 KB	Output is correct
3	Correct	2 ms	3020 KB	Output is correct
4	Correct	2 ms	3020 KB	Output is correct
5	Correct	2 ms	3020 KB	Output is correct
6	Correct	2 ms	3020 KB	Output is correct
7	Correct	2 ms	3020 KB	Output is correct
8	Correct	2 ms	3020 KB	Output is correct
9	Correct	2 ms	3020 KB	Output is correct
10	Correct	2 ms	2764 KB	Output is correct
11	Correct	2 ms	3020 KB	Output is correct
12	Correct	2 ms	3020 KB	Output is correct
13	Correct	6 ms	3916 KB	Output is correct
14	Correct	6 ms	3916 KB	Output is correct
15	Correct	4 ms	3912 KB	Output is correct
16	Correct	5 ms	3916 KB	Output is correct
17	Correct	5 ms	3916 KB	Output is correct
18	Correct	4 ms	3916 KB	Output is correct
19	Correct	5 ms	3864 KB	Output is correct
20	Correct	5 ms	3916 KB	Output is correct
21	Correct	4 ms	3916 KB	Output is correct
22	Correct	7 ms	3916 KB	Output is correct
23	Correct	7 ms	3916 KB	Output is correct
24	Correct	4 ms	3916 KB	Output is correct

Subtask #3
11.0 / 11.0

#	결과	실행 시간	메모리	Grader output
1	Correct	205 ms	60796 KB	Output is correct
2	Correct	184 ms	60828 KB	Output is correct
3	Correct	216 ms	60908 KB	Output is correct
4	Correct	175 ms	60780 KB	Output is correct
5	Correct	250 ms	64364 KB	Output is correct
6	Correct	183 ms	60976 KB	Output is correct
7	Correct	219 ms	66484 KB	Output is correct
8	Correct	183 ms	62472 KB	Output is correct
9	Correct	184 ms	63020 KB	Output is correct
10	Correct	230 ms	62220 KB	Output is correct
11	Correct	216 ms	62020 KB	Output is correct

Subtask #4
25.0 / 25.0

#	결과	실행 시간	메모리	Grader output
1	Correct	232 ms	63716 KB	Output is correct
2	Correct	275 ms	64592 KB	Output is correct
3	Correct	301 ms	61360 KB	Output is correct
4	Correct	245 ms	66584 KB	Output is correct
5	Correct	292 ms	66628 KB	Output is correct
6	Correct	277 ms	66792 KB	Output is correct
7	Correct	275 ms	62336 KB	Output is correct
8	Correct	310 ms	62336 KB	Output is correct

Subtask #5
35.0 / 35.0

#	결과	실행 시간	메모리	Grader output
1	Correct	318 ms	64500 KB	Output is correct
2	Correct	323 ms	61244 KB	Output is correct
3	Correct	289 ms	59744 KB	Output is correct
4	Correct	323 ms	58820 KB	Output is correct
5	Correct	182 ms	58440 KB	Output is correct
6	Correct	256 ms	58136 KB	Output is correct
7	Correct	267 ms	66236 KB	Output is correct
8	Correct	2 ms	3020 KB	Output is correct
9	Correct	6 ms	3916 KB	Output is correct
10	Correct	338 ms	65320 KB	Output is correct
11	Correct	349 ms	66920 KB	Output is correct
12	Correct	346 ms	64640 KB	Output is correct
13	Correct	342 ms	66744 KB	Output is correct
14	Correct	2 ms	3020 KB	Output is correct
15	Correct	6 ms	3916 KB	Output is correct
16	Correct	254 ms	62148 KB	Output is correct
17	Correct	375 ms	62264 KB	Output is correct
18	Correct	364 ms	62276 KB	Output is correct
19	Correct	356 ms	62404 KB	Output is correct

Subtask #6
13.0 / 13.0

#	결과	실행 시간	메모리	Grader output
1	Correct	2 ms	3020 KB	Output is correct
2	Correct	2 ms	3020 KB	Output is correct
3	Correct	2 ms	3020 KB	Output is correct
4	Correct	2 ms	3020 KB	Output is correct
5	Correct	2 ms	3020 KB	Output is correct
6	Correct	2 ms	3020 KB	Output is correct
7	Correct	2 ms	3020 KB	Output is correct
8	Correct	2 ms	3020 KB	Output is correct
9	Correct	2 ms	3020 KB	Output is correct
10	Correct	2 ms	2764 KB	Output is correct
11	Correct	2 ms	3020 KB	Output is correct
12	Correct	2 ms	3020 KB	Output is correct
13	Correct	6 ms	3916 KB	Output is correct
14	Correct	6 ms	3916 KB	Output is correct
15	Correct	4 ms	3912 KB	Output is correct
16	Correct	5 ms	3916 KB	Output is correct
17	Correct	5 ms	3916 KB	Output is correct
18	Correct	4 ms	3916 KB	Output is correct
19	Correct	5 ms	3864 KB	Output is correct
20	Correct	5 ms	3916 KB	Output is correct
21	Correct	4 ms	3916 KB	Output is correct
22	Correct	7 ms	3916 KB	Output is correct
23	Correct	7 ms	3916 KB	Output is correct
24	Correct	4 ms	3916 KB	Output is correct
25	Correct	205 ms	60796 KB	Output is correct
26	Correct	184 ms	60828 KB	Output is correct
27	Correct	216 ms	60908 KB	Output is correct
28	Correct	175 ms	60780 KB	Output is correct
29	Correct	250 ms	64364 KB	Output is correct
30	Correct	183 ms	60976 KB	Output is correct
31	Correct	219 ms	66484 KB	Output is correct
32	Correct	183 ms	62472 KB	Output is correct
33	Correct	184 ms	63020 KB	Output is correct
34	Correct	230 ms	62220 KB	Output is correct
35	Correct	216 ms	62020 KB	Output is correct
36	Correct	232 ms	63716 KB	Output is correct
37	Correct	275 ms	64592 KB	Output is correct
38	Correct	301 ms	61360 KB	Output is correct
39	Correct	245 ms	66584 KB	Output is correct
40	Correct	292 ms	66628 KB	Output is correct
41	Correct	277 ms	66792 KB	Output is correct
42	Correct	275 ms	62336 KB	Output is correct
43	Correct	310 ms	62336 KB	Output is correct
44	Correct	318 ms	64500 KB	Output is correct
45	Correct	323 ms	61244 KB	Output is correct
46	Correct	289 ms	59744 KB	Output is correct
47	Correct	323 ms	58820 KB	Output is correct
48	Correct	182 ms	58440 KB	Output is correct
49	Correct	256 ms	58136 KB	Output is correct
50	Correct	267 ms	66236 KB	Output is correct
51	Correct	2 ms	3020 KB	Output is correct
52	Correct	6 ms	3916 KB	Output is correct
53	Correct	338 ms	65320 KB	Output is correct
54	Correct	349 ms	66920 KB	Output is correct
55	Correct	346 ms	64640 KB	Output is correct
56	Correct	342 ms	66744 KB	Output is correct
57	Correct	2 ms	3020 KB	Output is correct
58	Correct	6 ms	3916 KB	Output is correct
59	Correct	254 ms	62148 KB	Output is correct
60	Correct	375 ms	62264 KB	Output is correct
61	Correct	364 ms	62276 KB	Output is correct
62	Correct	356 ms	62404 KB	Output is correct
63	Correct	287 ms	60996 KB	Output is correct
64	Correct	361 ms	61256 KB	Output is correct
65	Correct	303 ms	61004 KB	Output is correct
66	Correct	256 ms	64568 KB	Output is correct
67	Correct	314 ms	61420 KB	Output is correct
68	Correct	279 ms	62528 KB	Output is correct
69	Correct	299 ms	66768 KB	Output is correct
70	Correct	253 ms	62280 KB	Output is correct
71	Correct	339 ms	62276 KB	Output is correct

답안 #527825

Compilation message

Subtask #1 8.0 / 8.0

Subtask #2 8.0 / 8.0

Subtask #3 11.0 / 11.0

Subtask #4 25.0 / 25.0

Subtask #5 35.0 / 35.0

Subtask #6 13.0 / 13.0

Subtask #1
8.0 / 8.0

Subtask #2
8.0 / 8.0

Subtask #3
11.0 / 11.0

Subtask #4
25.0 / 25.0

Subtask #5
35.0 / 35.0

Subtask #6
13.0 / 13.0