oj.uz

Submission #826242

# Submission time Handle Problem Language Result Execution time Memory
826242 2023-08-15T11:29:19 Z Sohsoh84 Ancient Books (IOI17_books) C++17
70 / 100
 2000 ms 252228 KB 
#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

# Verdict Execution time Memory 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

# Verdict Execution time Memory 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

# Verdict Execution time Memory 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

# Verdict Execution time Memory 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

# Verdict Execution time Memory 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 -