Submission #641448

#	Submission time	Handle	Problem	Language	Result	Execution time	Memory
641448	2022-09-16T18:31:13 Z	ggoh	Ancient Books (IOI17_books)	C++14	0 / 100	1 ms	308 KB

books

#include "books.h"
#include<bits/stdc++.h>
using namespace std;
#define sz(v) ((int)(v).size())
typedef long long lint;

int b,n,sz,cnt;
int v[1000002],rev[1000002];
vector<int>go;
lint ans=0;
void dfs(int p,int q)
{
  if(b==-1)
  {
    ans+=p;
    return ;
  }
  int r=p;
  if(q!=b)
  {
    r=rev[b];
    ans+=abs(r-p);
    if(q!=-1)rev[q]=r;
  }
  ans+=abs(b-r);
  int tmp=b;
  q=go[b];
  go[b]=b;rev[b]=b;
  while(b-1>=0 && go[b-1]==b-1)b--;
  b--;
  dfs(tmp,q);
}

lint minimum_walk(vector<int> p, int s) {
  n=sz(p);
  go=p;
  for(int i=0;i<n;i++)rev[go[i]]=i;
  b=n;
  while(b-1>=0 && go[b-1]==b-1)b--;
  b--;
  if(b==-1)return 0;
  for(int i=0;i<n;i++)
  {
    if(go[i]!=i)
    {
      ans+=i;
      dfs(i,go[i]);
      break;
    }
  }
	return ans;
}

Subtask #1

0 / 12.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	0 ms	212 KB	Output is correct
2	Correct	1 ms	212 KB	Output is correct
3	Correct	1 ms	276 KB	Output is correct
4	Correct	1 ms	212 KB	Output is correct
5	Correct	1 ms	308 KB	Output is correct
6	Correct	1 ms	212 KB	Output is correct
7	Correct	1 ms	308 KB	Output is correct
8	Correct	1 ms	212 KB	Output is correct
9	Correct	0 ms	308 KB	Output is correct
10	Correct	1 ms	308 KB	Output is correct
11	Correct	0 ms	308 KB	Output is correct
12	Correct	0 ms	308 KB	Output is correct
13	Correct	1 ms	304 KB	Output is correct
14	Correct	1 ms	212 KB	Output is correct
15	Correct	1 ms	212 KB	Output is correct
16	Incorrect	0 ms	212 KB	3rd lines differ - on the 1st token, expected: '6', found: '8'
17	Halted	0 ms	0 KB	-

Subtask #2

0 / 10.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	0 ms	212 KB	Output is correct
2	Correct	1 ms	212 KB	Output is correct
3	Correct	1 ms	276 KB	Output is correct
4	Correct	1 ms	212 KB	Output is correct
5	Correct	1 ms	308 KB	Output is correct
6	Correct	1 ms	212 KB	Output is correct
7	Correct	1 ms	308 KB	Output is correct
8	Correct	1 ms	212 KB	Output is correct
9	Correct	0 ms	308 KB	Output is correct
10	Correct	1 ms	308 KB	Output is correct
11	Correct	0 ms	308 KB	Output is correct
12	Correct	0 ms	308 KB	Output is correct
13	Correct	1 ms	304 KB	Output is correct
14	Correct	1 ms	212 KB	Output is correct
15	Correct	1 ms	212 KB	Output is correct
16	Incorrect	0 ms	212 KB	3rd lines differ - on the 1st token, expected: '6', found: '8'
17	Halted	0 ms	0 KB	-

Subtask #3

0 / 28.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	0 ms	212 KB	Output is correct
2	Correct	1 ms	212 KB	Output is correct
3	Correct	1 ms	276 KB	Output is correct
4	Correct	1 ms	212 KB	Output is correct
5	Correct	1 ms	308 KB	Output is correct
6	Correct	1 ms	212 KB	Output is correct
7	Correct	1 ms	308 KB	Output is correct
8	Correct	1 ms	212 KB	Output is correct
9	Correct	0 ms	308 KB	Output is correct
10	Correct	1 ms	308 KB	Output is correct
11	Correct	0 ms	308 KB	Output is correct
12	Correct	0 ms	308 KB	Output is correct
13	Correct	1 ms	304 KB	Output is correct
14	Correct	1 ms	212 KB	Output is correct
15	Correct	1 ms	212 KB	Output is correct
16	Incorrect	0 ms	212 KB	3rd lines differ - on the 1st token, expected: '6', found: '8'
17	Halted	0 ms	0 KB	-

Subtask #4

0 / 20.0

#	Verdict	Execution time	Memory	Grader output
1	Incorrect	1 ms	308 KB	3rd lines differ - on the 1st token, expected: '3304', found: '4780'
2	Halted	0 ms	0 KB	-

Subtask #5

0 / 30.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	0 ms	212 KB	Output is correct
2	Correct	1 ms	212 KB	Output is correct
3	Correct	1 ms	276 KB	Output is correct
4	Correct	1 ms	212 KB	Output is correct
5	Correct	1 ms	308 KB	Output is correct
6	Correct	1 ms	212 KB	Output is correct
7	Correct	1 ms	308 KB	Output is correct
8	Correct	1 ms	212 KB	Output is correct
9	Correct	0 ms	308 KB	Output is correct
10	Correct	1 ms	308 KB	Output is correct
11	Correct	0 ms	308 KB	Output is correct
12	Correct	0 ms	308 KB	Output is correct
13	Correct	1 ms	304 KB	Output is correct
14	Correct	1 ms	212 KB	Output is correct
15	Correct	1 ms	212 KB	Output is correct
16	Incorrect	0 ms	212 KB	3rd lines differ - on the 1st token, expected: '6', found: '8'
17	Halted	0 ms	0 KB	-