답안 #826242

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
826242	2023-08-15T11:29:19 Z	Sohsoh84	고대 책들 (IOI17_books)	C++17	70 / 100	2000 ms	252228 KB

books

#include<bits/stdc++.h>
#include "books.h"
#define X first
#define Y second
using namespace std;

typedef pair<int,int> pii;
const int maxn=2e6,inf=1e9;
long long ans;
int n,cnt,MIN[maxn],MAX[maxn],nex[maxn],mol[maxn],nl,nr,x,y;
bool mark[maxn],seg[maxn];
map<pii,int> dp;
pii P[maxn];
vector<int>vec;

void dfs(int v,int u)
{
  mark[v]=true;
  mol[v]=cnt;
  MIN[cnt]=min(MIN[cnt],v),MAX[cnt]=max(MAX[cnt],v);
  if(nex[v]!=u) dfs(nex[v],u);
}

int go(int l,int r)
{
  if(l==0 && r==n-1) return 0;
  if(dp[pii(l,r)]) return dp[pii(l,r)];
  return dp[pii(l,r)]=min((l==0?inf:go(P[mol[l-1]].X,max(P[mol[l-1]].Y,r))),(r==n-1?inf:go(min(l,P[mol[r+1]].X),P[mol[r+1]].Y)))+2;
}

void ok(int k)
{
  if(!seg[k])
    nl=min(nl,MIN[k]),nr=max(nr,MAX[k]),vec.push_back(k);
  else
    nl=min(nl,P[k].X),x=min(x,P[k].X),nr=max(nr,P[k].Y),y=max(y,P[k].Y);
}

void fmol(int k)
{
  x=y=MIN[k];
  vec.clear();vec.push_back(k);
  nl=MIN[k],nr=MAX[k];
  while(nl<x || y<nr)
    {
      if(nl<x) x--,ok(mol[x]);
      else y++,ok(mol[y]);
    }
  for(int i=0;i<vec.size();i++)
    P[vec[i]]=pii(x,y),seg[vec[i]]=true;
}

long long minimum_walk(vector<int> p, int s)
{
  n=p.size();
  for(int i=0;i<n;i++) nex[i]=p[i];
  for(int i=0;i<n;i++)
    {
      ans+=abs(i-p[i]);
      if(!mark[i]) {
	MIN[cnt]=MAX[cnt]=i;
	dfs(i,i);
	cnt++;
      }
    }
  if(ans==0) return 0;
  for(int i=0;p[i]==i && i<s;i++)
    ans-=2;
  for(int i=n-1;p[i]==i && i>s;i--)
    ans-=2;
  for(int i=cnt-1;i>-1;i--)
    if(!seg[i])
      fmol(i);
  ans+=go(P[mol[s]].X,P[mol[s]].Y);
  return ans;
}

Compilation message

books.cpp: In function 'void fmol(int)':
books.cpp:49:16: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   49 |   for(int i=0;i<vec.size();i++)
      |               ~^~~~~~~~~~~

Subtask #1

12.0 / 12.0

#	결과	실행 시간	메모리	Grader output
1	Correct	0 ms	340 KB	Output is correct
2	Correct	1 ms	320 KB	Output is correct
3	Correct	0 ms	296 KB	Output is correct
4	Correct	0 ms	340 KB	Output is correct
5	Correct	0 ms	340 KB	Output is correct
6	Correct	0 ms	340 KB	Output is correct
7	Correct	1 ms	340 KB	Output is correct
8	Correct	0 ms	340 KB	Output is correct
9	Correct	1 ms	316 KB	Output is correct
10	Correct	0 ms	340 KB	Output is correct
11	Correct	1 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	1 ms	340 KB	Output is correct
17	Correct	1 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	0 ms	340 KB	Output is correct
2	Correct	1 ms	320 KB	Output is correct
3	Correct	0 ms	296 KB	Output is correct
4	Correct	0 ms	340 KB	Output is correct
5	Correct	0 ms	340 KB	Output is correct
6	Correct	0 ms	340 KB	Output is correct
7	Correct	1 ms	340 KB	Output is correct
8	Correct	0 ms	340 KB	Output is correct
9	Correct	1 ms	316 KB	Output is correct
10	Correct	0 ms	340 KB	Output is correct
11	Correct	1 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	1 ms	340 KB	Output is correct
17	Correct	1 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	1 ms	340 KB	Output is correct
21	Correct	1 ms	340 KB	Output is correct
22	Correct	1 ms	468 KB	Output is correct
23	Correct	1 ms	468 KB	Output is correct
24	Correct	1 ms	340 KB	Output is correct
25	Correct	1 ms	340 KB	Output is correct
26	Correct	1 ms	340 KB	Output is correct
27	Correct	1 ms	340 KB	Output is correct
28	Correct	1 ms	316 KB	Output is correct
29	Correct	1 ms	340 KB	Output is correct

Subtask #3

28.0 / 28.0

#	결과	실행 시간	메모리	Grader output
1	Correct	0 ms	340 KB	Output is correct
2	Correct	1 ms	320 KB	Output is correct
3	Correct	0 ms	296 KB	Output is correct
4	Correct	0 ms	340 KB	Output is correct
5	Correct	0 ms	340 KB	Output is correct
6	Correct	0 ms	340 KB	Output is correct
7	Correct	1 ms	340 KB	Output is correct
8	Correct	0 ms	340 KB	Output is correct
9	Correct	1 ms	316 KB	Output is correct
10	Correct	0 ms	340 KB	Output is correct
11	Correct	1 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	1 ms	340 KB	Output is correct
17	Correct	1 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	1 ms	340 KB	Output is correct
21	Correct	1 ms	340 KB	Output is correct
22	Correct	1 ms	468 KB	Output is correct
23	Correct	1 ms	468 KB	Output is correct
24	Correct	1 ms	340 KB	Output is correct
25	Correct	1 ms	340 KB	Output is correct
26	Correct	1 ms	340 KB	Output is correct
27	Correct	1 ms	340 KB	Output is correct
28	Correct	1 ms	316 KB	Output is correct
29	Correct	1 ms	340 KB	Output is correct
30	Correct	109 ms	27884 KB	Output is correct
31	Correct	117 ms	28020 KB	Output is correct
32	Correct	84 ms	31448 KB	Output is correct
33	Correct	363 ms	125304 KB	Output is correct
34	Correct	332 ms	125364 KB	Output is correct
35	Correct	257 ms	96980 KB	Output is correct
36	Correct	134 ms	46720 KB	Output is correct
37	Correct	111 ms	25232 KB	Output is correct
38	Correct	89 ms	23924 KB	Output is correct
39	Correct	86 ms	23932 KB	Output is correct
40	Correct	117 ms	24060 KB	Output is correct
41	Correct	102 ms	25840 KB	Output is correct
42	Correct	126 ms	25860 KB	Output is correct
43	Correct	101 ms	36472 KB	Output is correct

Subtask #4

20.0 / 20.0

#	결과	실행 시간	메모리	Grader output
1	Correct	33 ms	7024 KB	Output is correct
2	Correct	1 ms	340 KB	Output is correct
3	Correct	12 ms	2748 KB	Output is correct
4	Correct	32 ms	6652 KB	Output is correct
5	Correct	30 ms	6668 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	316 KB	Output is correct
11	Correct	2 ms	852 KB	Output is correct
12	Correct	3 ms	852 KB	Output is correct
13	Correct	1 ms	340 KB	Output is correct
14	Correct	1 ms	320 KB	Output is correct
15	Correct	1 ms	340 KB	Output is correct
16	Correct	1 ms	320 KB	Output is correct
17	Correct	1 ms	468 KB	Output is correct
18	Correct	1 ms	468 KB	Output is correct
19	Correct	1 ms	340 KB	Output is correct
20	Correct	0 ms	340 KB	Output is correct

Subtask #5

0 / 30.0

#	결과	실행 시간	메모리	Grader output
1	Correct	0 ms	340 KB	Output is correct
2	Correct	1 ms	320 KB	Output is correct
3	Correct	0 ms	296 KB	Output is correct
4	Correct	0 ms	340 KB	Output is correct
5	Correct	0 ms	340 KB	Output is correct
6	Correct	0 ms	340 KB	Output is correct
7	Correct	1 ms	340 KB	Output is correct
8	Correct	0 ms	340 KB	Output is correct
9	Correct	1 ms	316 KB	Output is correct
10	Correct	0 ms	340 KB	Output is correct
11	Correct	1 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	1 ms	340 KB	Output is correct
17	Correct	1 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	1 ms	340 KB	Output is correct
21	Correct	1 ms	340 KB	Output is correct
22	Correct	1 ms	468 KB	Output is correct
23	Correct	1 ms	468 KB	Output is correct
24	Correct	1 ms	340 KB	Output is correct
25	Correct	1 ms	340 KB	Output is correct
26	Correct	1 ms	340 KB	Output is correct
27	Correct	1 ms	340 KB	Output is correct
28	Correct	1 ms	316 KB	Output is correct
29	Correct	1 ms	340 KB	Output is correct
30	Correct	109 ms	27884 KB	Output is correct
31	Correct	117 ms	28020 KB	Output is correct
32	Correct	84 ms	31448 KB	Output is correct
33	Correct	363 ms	125304 KB	Output is correct
34	Correct	332 ms	125364 KB	Output is correct
35	Correct	257 ms	96980 KB	Output is correct
36	Correct	134 ms	46720 KB	Output is correct
37	Correct	111 ms	25232 KB	Output is correct
38	Correct	89 ms	23924 KB	Output is correct
39	Correct	86 ms	23932 KB	Output is correct
40	Correct	117 ms	24060 KB	Output is correct
41	Correct	102 ms	25840 KB	Output is correct
42	Correct	126 ms	25860 KB	Output is correct
43	Correct	101 ms	36472 KB	Output is correct
44	Correct	33 ms	7024 KB	Output is correct
45	Correct	1 ms	340 KB	Output is correct
46	Correct	12 ms	2748 KB	Output is correct
47	Correct	32 ms	6652 KB	Output is correct
48	Correct	30 ms	6668 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	316 KB	Output is correct
54	Correct	2 ms	852 KB	Output is correct
55	Correct	3 ms	852 KB	Output is correct
56	Correct	1 ms	340 KB	Output is correct
57	Correct	1 ms	320 KB	Output is correct
58	Correct	1 ms	340 KB	Output is correct
59	Correct	1 ms	320 KB	Output is correct
60	Correct	1 ms	468 KB	Output is correct
61	Correct	1 ms	468 KB	Output is correct
62	Correct	1 ms	340 KB	Output is correct
63	Correct	0 ms	340 KB	Output is correct
64	Correct	318 ms	68632 KB	Output is correct
65	Execution timed out	2072 ms	252228 KB	Time limit exceeded
66	Halted	0 ms	0 KB	-