답안 #790601

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
790601	2023-07-22T22:31:32 Z	FEDIKUS	고대 책들 (IOI17_books)	C++17	100 / 100	179 ms	31592 KB

books

#include "books.h"
#include<bits/stdc++.h>
 
using ll = long long;
using namespace std;
 
const int maxn=1e6+10;
 
int n;
int mini[maxn];
int maxi[maxn];
bool bio[maxn];
int dsu[maxn],siz[maxn];
 
int cale(int a){return a==dsu[a] ? a:cale(dsu[a]);}
void join(int a,int b){
	a=cale(a); b=cale(b);
	if(a==b) return;
	if(siz[a]<siz[b]) swap(a,b);
	dsu[b]=a;
	siz[a]+=siz[b];
	maxi[a]=max(maxi[a],maxi[b]);
	mini[a]=min(mini[a],mini[b]);
}
void init(){
	for(int i=0;i<n;i++){dsu[i]=i; siz[i]=1; maxi[i]=i; mini[i]=i;}
}
 
ll minimum_walk(vector<int> p, int s) {
	n=p.size();
	init();
	ll ret=0;
	int imal=n,imar=-1;
	for(int i=0;i<n;i++){
		if(p[i]!=i) imal=min(imal,i);
		if(p[i]!=i) imar=i;
		ret+=abs(p[i]-i);
		if(bio[i]) continue;
		int tren=i;
		while(!bio[tren]){
			bio[tren]=true;
			join(tren,p[tren]);
			tren=p[tren];
		}
	}
	imal=min(imal,s);
	imar=max(imar,s);
	int l=s,r=s;
	int tl=mini[cale(s)],tr=maxi[cale(s)];
	int dodaol=0,dodaor=0;
	while(l!=imal || r!=imar){
		bool pl=false,pr=false;
		if(l!=tl || r!=tr){
			if(l!=tl){
				l--;
				tl=min(tl,mini[cale(l)]);
				tr=max(tr,maxi[cale(l)]);
			}
			if(r!=tr){
				r++;
				tl=min(tl,mini[cale(r)]);
				tr=max(tr,maxi[cale(r)]);
			}
			continue;
		}

		while(l>imal && maxi[cale(l-1)]<=r){
			l--;
			if(l<tl){
				ret+=2;
				dodaol++;
			}
			tl=min(tl,mini[cale(l)]);
		}

		while(r<imar && mini[cale(r+1)]>=l){
			r++;
			if(r>tr){
				ret+=2;
				dodaor++;
			}
			tr=max(tr,maxi[cale(r)]);
		}

		if(l==imal && r==imar) break;
		
		ret-=2*max(dodaol-int(r>=tr),dodaor-int(l<=tl));
		l--;
		tl=min(tl,mini[cale(l)]);
		tr=max(tr,maxi[cale(l)]);
		dodaol=0;
		dodaor=0;
	}
	return ret;
}

Compilation message

books.cpp: In function 'll minimum_walk(std::vector<int>, int)':
books.cpp:52:8: warning: unused variable 'pl' [-Wunused-variable]
   52 |   bool pl=false,pr=false;
      |        ^~
books.cpp:52:17: warning: unused variable 'pr' [-Wunused-variable]
   52 |   bool pl=false,pr=false;
      |                 ^~

Subtask #1

12.0 / 12.0

#	결과	실행 시간	메모리	Grader output
1	Correct	1 ms	340 KB	Output is correct
2	Correct	0 ms	340 KB	Output is correct
3	Correct	0 ms	340 KB	Output is correct
4	Correct	0 ms	212 KB	Output is correct
5	Correct	0 ms	340 KB	Output is correct
6	Correct	0 ms	340 KB	Output is correct
7	Correct	0 ms	340 KB	Output is correct
8	Correct	0 ms	340 KB	Output is correct
9	Correct	0 ms	340 KB	Output is correct
10	Correct	1 ms	340 KB	Output is correct
11	Correct	0 ms	340 KB	Output is correct
12	Correct	0 ms	340 KB	Output is correct
13	Correct	0 ms	340 KB	Output is correct
14	Correct	0 ms	340 KB	Output is correct
15	Correct	0 ms	340 KB	Output is correct
16	Correct	0 ms	340 KB	Output is correct
17	Correct	0 ms	340 KB	Output is correct
18	Correct	0 ms	340 KB	Output is correct

Subtask #2

10.0 / 10.0

#	결과	실행 시간	메모리	Grader output
1	Correct	1 ms	340 KB	Output is correct
2	Correct	0 ms	340 KB	Output is correct
3	Correct	0 ms	340 KB	Output is correct
4	Correct	0 ms	212 KB	Output is correct
5	Correct	0 ms	340 KB	Output is correct
6	Correct	0 ms	340 KB	Output is correct
7	Correct	0 ms	340 KB	Output is correct
8	Correct	0 ms	340 KB	Output is correct
9	Correct	0 ms	340 KB	Output is correct
10	Correct	1 ms	340 KB	Output is correct
11	Correct	0 ms	340 KB	Output is correct
12	Correct	0 ms	340 KB	Output is correct
13	Correct	0 ms	340 KB	Output is correct
14	Correct	0 ms	340 KB	Output is correct
15	Correct	0 ms	340 KB	Output is correct
16	Correct	0 ms	340 KB	Output is correct
17	Correct	0 ms	340 KB	Output is correct
18	Correct	0 ms	340 KB	Output is correct
19	Correct	0 ms	340 KB	Output is correct
20	Correct	0 ms	340 KB	Output is correct
21	Correct	0 ms	340 KB	Output is correct
22	Correct	0 ms	340 KB	Output is correct
23	Correct	1 ms	340 KB	Output is correct
24	Correct	1 ms	340 KB	Output is correct
25	Correct	1 ms	340 KB	Output is correct
26	Correct	0 ms	340 KB	Output is correct
27	Correct	1 ms	340 KB	Output is correct
28	Correct	1 ms	340 KB	Output is correct
29	Correct	0 ms	340 KB	Output is correct

Subtask #3

28.0 / 28.0

#	결과	실행 시간	메모리	Grader output
1	Correct	1 ms	340 KB	Output is correct
2	Correct	0 ms	340 KB	Output is correct
3	Correct	0 ms	340 KB	Output is correct
4	Correct	0 ms	212 KB	Output is correct
5	Correct	0 ms	340 KB	Output is correct
6	Correct	0 ms	340 KB	Output is correct
7	Correct	0 ms	340 KB	Output is correct
8	Correct	0 ms	340 KB	Output is correct
9	Correct	0 ms	340 KB	Output is correct
10	Correct	1 ms	340 KB	Output is correct
11	Correct	0 ms	340 KB	Output is correct
12	Correct	0 ms	340 KB	Output is correct
13	Correct	0 ms	340 KB	Output is correct
14	Correct	0 ms	340 KB	Output is correct
15	Correct	0 ms	340 KB	Output is correct
16	Correct	0 ms	340 KB	Output is correct
17	Correct	0 ms	340 KB	Output is correct
18	Correct	0 ms	340 KB	Output is correct
19	Correct	0 ms	340 KB	Output is correct
20	Correct	0 ms	340 KB	Output is correct
21	Correct	0 ms	340 KB	Output is correct
22	Correct	0 ms	340 KB	Output is correct
23	Correct	1 ms	340 KB	Output is correct
24	Correct	1 ms	340 KB	Output is correct
25	Correct	1 ms	340 KB	Output is correct
26	Correct	0 ms	340 KB	Output is correct
27	Correct	1 ms	340 KB	Output is correct
28	Correct	1 ms	340 KB	Output is correct
29	Correct	0 ms	340 KB	Output is correct
30	Correct	179 ms	24704 KB	Output is correct
31	Correct	174 ms	24708 KB	Output is correct
32	Correct	91 ms	24696 KB	Output is correct
33	Correct	94 ms	24696 KB	Output is correct
34	Correct	94 ms	24692 KB	Output is correct
35	Correct	99 ms	24696 KB	Output is correct
36	Correct	99 ms	24752 KB	Output is correct
37	Correct	94 ms	24688 KB	Output is correct
38	Correct	95 ms	24692 KB	Output is correct
39	Correct	109 ms	24708 KB	Output is correct
40	Correct	99 ms	24700 KB	Output is correct
41	Correct	120 ms	24700 KB	Output is correct
42	Correct	110 ms	24696 KB	Output is correct
43	Correct	102 ms	24692 KB	Output is correct

Subtask #4

20.0 / 20.0

#	결과	실행 시간	메모리	Grader output
1	Correct	1 ms	340 KB	Output is correct
2	Correct	0 ms	340 KB	Output is correct
3	Correct	1 ms	340 KB	Output is correct
4	Correct	1 ms	340 KB	Output is correct
5	Correct	1 ms	312 KB	Output is correct
6	Correct	1 ms	340 KB	Output is correct
7	Correct	1 ms	340 KB	Output is correct
8	Correct	1 ms	340 KB	Output is correct
9	Correct	1 ms	340 KB	Output is correct
10	Correct	1 ms	340 KB	Output is correct
11	Correct	1 ms	340 KB	Output is correct
12	Correct	1 ms	340 KB	Output is correct
13	Correct	1 ms	340 KB	Output is correct
14	Correct	1 ms	340 KB	Output is correct
15	Correct	1 ms	340 KB	Output is correct
16	Correct	1 ms	340 KB	Output is correct
17	Correct	1 ms	340 KB	Output is correct
18	Correct	1 ms	340 KB	Output is correct
19	Correct	1 ms	340 KB	Output is correct
20	Correct	1 ms	340 KB	Output is correct

Subtask #5

30.0 / 30.0

#	결과	실행 시간	메모리	Grader output
1	Correct	1 ms	340 KB	Output is correct
2	Correct	0 ms	340 KB	Output is correct
3	Correct	0 ms	340 KB	Output is correct
4	Correct	0 ms	212 KB	Output is correct
5	Correct	0 ms	340 KB	Output is correct
6	Correct	0 ms	340 KB	Output is correct
7	Correct	0 ms	340 KB	Output is correct
8	Correct	0 ms	340 KB	Output is correct
9	Correct	0 ms	340 KB	Output is correct
10	Correct	1 ms	340 KB	Output is correct
11	Correct	0 ms	340 KB	Output is correct
12	Correct	0 ms	340 KB	Output is correct
13	Correct	0 ms	340 KB	Output is correct
14	Correct	0 ms	340 KB	Output is correct
15	Correct	0 ms	340 KB	Output is correct
16	Correct	0 ms	340 KB	Output is correct
17	Correct	0 ms	340 KB	Output is correct
18	Correct	0 ms	340 KB	Output is correct
19	Correct	0 ms	340 KB	Output is correct
20	Correct	0 ms	340 KB	Output is correct
21	Correct	0 ms	340 KB	Output is correct
22	Correct	0 ms	340 KB	Output is correct
23	Correct	1 ms	340 KB	Output is correct
24	Correct	1 ms	340 KB	Output is correct
25	Correct	1 ms	340 KB	Output is correct
26	Correct	0 ms	340 KB	Output is correct
27	Correct	1 ms	340 KB	Output is correct
28	Correct	1 ms	340 KB	Output is correct
29	Correct	0 ms	340 KB	Output is correct
30	Correct	179 ms	24704 KB	Output is correct
31	Correct	174 ms	24708 KB	Output is correct
32	Correct	91 ms	24696 KB	Output is correct
33	Correct	94 ms	24696 KB	Output is correct
34	Correct	94 ms	24692 KB	Output is correct
35	Correct	99 ms	24696 KB	Output is correct
36	Correct	99 ms	24752 KB	Output is correct
37	Correct	94 ms	24688 KB	Output is correct
38	Correct	95 ms	24692 KB	Output is correct
39	Correct	109 ms	24708 KB	Output is correct
40	Correct	99 ms	24700 KB	Output is correct
41	Correct	120 ms	24700 KB	Output is correct
42	Correct	110 ms	24696 KB	Output is correct
43	Correct	102 ms	24692 KB	Output is correct
44	Correct	1 ms	340 KB	Output is correct
45	Correct	0 ms	340 KB	Output is correct
46	Correct	1 ms	340 KB	Output is correct
47	Correct	1 ms	340 KB	Output is correct
48	Correct	1 ms	312 KB	Output is correct
49	Correct	1 ms	340 KB	Output is correct
50	Correct	1 ms	340 KB	Output is correct
51	Correct	1 ms	340 KB	Output is correct
52	Correct	1 ms	340 KB	Output is correct
53	Correct	1 ms	340 KB	Output is correct
54	Correct	1 ms	340 KB	Output is correct
55	Correct	1 ms	340 KB	Output is correct
56	Correct	1 ms	340 KB	Output is correct
57	Correct	1 ms	340 KB	Output is correct
58	Correct	1 ms	340 KB	Output is correct
59	Correct	1 ms	340 KB	Output is correct
60	Correct	1 ms	340 KB	Output is correct
61	Correct	1 ms	340 KB	Output is correct
62	Correct	1 ms	340 KB	Output is correct
63	Correct	1 ms	340 KB	Output is correct
64	Correct	96 ms	31468 KB	Output is correct
65	Correct	92 ms	31464 KB	Output is correct
66	Correct	99 ms	31464 KB	Output is correct
67	Correct	95 ms	31472 KB	Output is correct
68	Correct	10 ms	3256 KB	Output is correct
69	Correct	9 ms	3284 KB	Output is correct
70	Correct	9 ms	3284 KB	Output is correct
71	Correct	12 ms	3284 KB	Output is correct
72	Correct	9 ms	3336 KB	Output is correct
73	Correct	10 ms	3252 KB	Output is correct
74	Correct	92 ms	31472 KB	Output is correct
75	Correct	92 ms	31460 KB	Output is correct
76	Correct	101 ms	31476 KB	Output is correct
77	Correct	94 ms	31468 KB	Output is correct
78	Correct	95 ms	31476 KB	Output is correct
79	Correct	94 ms	31464 KB	Output is correct
80	Correct	80 ms	31464 KB	Output is correct
81	Correct	95 ms	31464 KB	Output is correct
82	Correct	85 ms	31484 KB	Output is correct
83	Correct	94 ms	31400 KB	Output is correct
84	Correct	95 ms	31480 KB	Output is correct
85	Correct	94 ms	31464 KB	Output is correct
86	Correct	91 ms	31592 KB	Output is correct
87	Correct	89 ms	31472 KB	Output is correct
88	Correct	92 ms	31464 KB	Output is correct
89	Correct	114 ms	31464 KB	Output is correct
90	Correct	106 ms	31436 KB	Output is correct
91	Correct	93 ms	31460 KB	Output is correct
92	Correct	94 ms	31464 KB	Output is correct