oj.uz

Submission #835887

# Submission time Handle Problem Language Result Execution time Memory
835887 2023-08-23T21:56:18 Z jasmin Ancient Books (IOI17_books) C++17
50 / 100
 1229 ms 63804 KB 
//#include "books.h"
#include<bits/stdc++.h>
using namespace std;
 
const int INF=1e9+7;
 
long long minimum_walk(vector<int> p, int s) {
    int n=p.size();
	
    long long ans=0;
    
    vector<bool> vis(n, false);
    vector<pair<int,int> > ranges;
    vector<bool> ends(n);
    vector<bool> starts(n);
    vector<int> cycle(n);
    for(int i=0; i<n; i++){
        if(vis[i]) continue;
 
        int v=i;
        int l=i;
        int r=i;
        while(!vis[v]){
            vis[v]=true;
            cycle[v] = i;
 
            l=min(l, v);
            r=max(r, v);
 
            ans += abs(p[v]-v);
            v=p[v];
        }
        ends[r] = true;
        starts[l] = true;
 
    }

    //start: 
    set<int> free;
    for(int i=0; i<n; i++){
        if(p[i]!=i || i==s){
            free.insert(i);
        }
    }

    int l=s; int r=s;
    vector<int> queue; queue.push_back(s);
    vis.assign(n, false);
    while(!free.empty()){

        if(!queue.empty()){
            int cur=queue.back();
            queue.pop_back();

            while(!vis[cur]){
                vis[cur]=true;
                free.erase(cur);

                l=min(l, cur);
                r=max(r, cur);

                cur = p[cur];
            }

            vector<int> neu;
            auto it=free.upper_bound(l);
            while(it!=free.end() && *it<r){

                neu.push_back(*it);
                it=next(it);
            }
            for(auto e: neu){
                queue.push_back(e);
                free.erase(e);
            }

        }
        else{

            auto itleft = free.upper_bound(l);
            int left=-1; int distleft=INF;
            if(itleft!=free.begin()){

                left = *prev(itleft);
                distleft = l-left;

            }
            
            auto itright = free.upper_bound(r);
            int right=-1; int distright = INF;
            if(itright!=free.end()){

                right = *itright;
                distright = right -r;
            }


            if(distleft <= distright && left!=-1 && starts[left]){

                ans += 2*distleft;
                free.erase(left);
                queue.push_back(left);
            }
            else if(right!=-1 && ends[right]){

                ans += 2*distright;
                free.erase(right);
                queue.push_back(right);
            }
            else{

                if(distleft<= distright && left!=-1){

                    ans+=2*distleft;
                    free.erase(left);
                    queue.push_back(left);
                }
                else if(right!=-1){

                    ans+=2*distright;
                    free.erase(right);
                    queue.push_back(right);
                }
            }

        }

    }

    return ans;
}

Subtask #1
12.0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 0 ms 212 KB Output is correct
3 Correct 0 ms 212 KB Output is correct
4 Correct 0 ms 212 KB Output is correct
5 Correct 0 ms 212 KB Output is correct
6 Correct 0 ms 212 KB Output is correct
7 Correct 0 ms 212 KB Output is correct
8 Correct 0 ms 212 KB Output is correct
9 Correct 0 ms 212 KB Output is correct
10 Correct 0 ms 212 KB Output is correct
11 Correct 0 ms 212 KB Output is correct
12 Correct 0 ms 212 KB Output is correct
13 Correct 0 ms 212 KB Output is correct
14 Correct 1 ms 212 KB Output is correct
15 Correct 0 ms 212 KB Output is correct
16 Correct 0 ms 212 KB Output is correct
17 Correct 0 ms 212 KB Output is correct
18 Correct 0 ms 212 KB Output is correct

Subtask #2
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 0 ms 212 KB Output is correct
3 Correct 0 ms 212 KB Output is correct
4 Correct 0 ms 212 KB Output is correct
5 Correct 0 ms 212 KB Output is correct
6 Correct 0 ms 212 KB Output is correct
7 Correct 0 ms 212 KB Output is correct
8 Correct 0 ms 212 KB Output is correct
9 Correct 0 ms 212 KB Output is correct
10 Correct 0 ms 212 KB Output is correct
11 Correct 0 ms 212 KB Output is correct
12 Correct 0 ms 212 KB Output is correct
13 Correct 0 ms 212 KB Output is correct
14 Correct 1 ms 212 KB Output is correct
15 Correct 0 ms 212 KB Output is correct
16 Correct 0 ms 212 KB Output is correct
17 Correct 0 ms 212 KB Output is correct
18 Correct 0 ms 212 KB Output is correct
19 Correct 1 ms 340 KB Output is correct
20 Correct 1 ms 340 KB Output is correct
21 Correct 0 ms 212 KB Output is correct
22 Correct 1 ms 212 KB Output is correct
23 Correct 1 ms 212 KB Output is correct
24 Correct 1 ms 212 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 340 KB Output is correct
29 Correct 1 ms 212 KB Output is correct

Subtask #3
28.0 / 28.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 0 ms 212 KB Output is correct
3 Correct 0 ms 212 KB Output is correct
4 Correct 0 ms 212 KB Output is correct
5 Correct 0 ms 212 KB Output is correct
6 Correct 0 ms 212 KB Output is correct
7 Correct 0 ms 212 KB Output is correct
8 Correct 0 ms 212 KB Output is correct
9 Correct 0 ms 212 KB Output is correct
10 Correct 0 ms 212 KB Output is correct
11 Correct 0 ms 212 KB Output is correct
12 Correct 0 ms 212 KB Output is correct
13 Correct 0 ms 212 KB Output is correct
14 Correct 1 ms 212 KB Output is correct
15 Correct 0 ms 212 KB Output is correct
16 Correct 0 ms 212 KB Output is correct
17 Correct 0 ms 212 KB Output is correct
18 Correct 0 ms 212 KB Output is correct
19 Correct 1 ms 340 KB Output is correct
20 Correct 1 ms 340 KB Output is correct
21 Correct 0 ms 212 KB Output is correct
22 Correct 1 ms 212 KB Output is correct
23 Correct 1 ms 212 KB Output is correct
24 Correct 1 ms 212 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 340 KB Output is correct
29 Correct 1 ms 212 KB Output is correct
30 Correct 1229 ms 60520 KB Output is correct
31 Correct 845 ms 63804 KB Output is correct
32 Correct 75 ms 12276 KB Output is correct
33 Correct 232 ms 35936 KB Output is correct
34 Correct 245 ms 35820 KB Output is correct
35 Correct 293 ms 43636 KB Output is correct
36 Correct 374 ms 54636 KB Output is correct
37 Correct 407 ms 58980 KB Output is correct
38 Correct 423 ms 59380 KB Output is correct
39 Correct 427 ms 59212 KB Output is correct
40 Correct 454 ms 59540 KB Output is correct
41 Correct 718 ms 60512 KB Output is correct
42 Correct 561 ms 60396 KB Output is correct
43 Correct 217 ms 38376 KB Output is correct

Subtask #4
0 / 20.0

# Verdict Execution time Memory Grader output
1 Incorrect 1 ms 212 KB 3rd lines differ - on the 1st token, expected: '3304', found: '3324'
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 0 ms 212 KB Output is correct
3 Correct 0 ms 212 KB Output is correct
4 Correct 0 ms 212 KB Output is correct
5 Correct 0 ms 212 KB Output is correct
6 Correct 0 ms 212 KB Output is correct
7 Correct 0 ms 212 KB Output is correct
8 Correct 0 ms 212 KB Output is correct
9 Correct 0 ms 212 KB Output is correct
10 Correct 0 ms 212 KB Output is correct
11 Correct 0 ms 212 KB Output is correct
12 Correct 0 ms 212 KB Output is correct
13 Correct 0 ms 212 KB Output is correct
14 Correct 1 ms 212 KB Output is correct
15 Correct 0 ms 212 KB Output is correct
16 Correct 0 ms 212 KB Output is correct
17 Correct 0 ms 212 KB Output is correct
18 Correct 0 ms 212 KB Output is correct
19 Correct 1 ms 340 KB Output is correct
20 Correct 1 ms 340 KB Output is correct
21 Correct 0 ms 212 KB Output is correct
22 Correct 1 ms 212 KB Output is correct
23 Correct 1 ms 212 KB Output is correct
24 Correct 1 ms 212 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 340 KB Output is correct
29 Correct 1 ms 212 KB Output is correct
30 Correct 1229 ms 60520 KB Output is correct
31 Correct 845 ms 63804 KB Output is correct
32 Correct 75 ms 12276 KB Output is correct
33 Correct 232 ms 35936 KB Output is correct
34 Correct 245 ms 35820 KB Output is correct
35 Correct 293 ms 43636 KB Output is correct
36 Correct 374 ms 54636 KB Output is correct
37 Correct 407 ms 58980 KB Output is correct
38 Correct 423 ms 59380 KB Output is correct
39 Correct 427 ms 59212 KB Output is correct
40 Correct 454 ms 59540 KB Output is correct
41 Correct 718 ms 60512 KB Output is correct
42 Correct 561 ms 60396 KB Output is correct
43 Correct 217 ms 38376 KB Output is correct
44 Incorrect 1 ms 212 KB 3rd lines differ - on the 1st token, expected: '3304', found: '3324'
45 Halted 0 ms 0 KB -