답안 #718757

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
718757	2023-04-04T17:30:36 Z	Jarif_Rahman	고대 책들 (IOI17_books)	C++17	22 / 100	2000 ms	38480 KB

books

#include <bits/stdc++.h>
#define pb push_back
#define f first
#define sc second
using namespace std;
typedef long long int ll;
typedef string str;

struct dsu{
    int n;
    vector<int> sz, p;
    dsu(int nn){
        n = nn;
        sz.resize(n, 1);
        p.resize(n);
        for(int i = 0; i < n; i++) p[i] = i;
    }
    int get(int x){
        if(p[x] != x) p[x] = get(p[x]);
        return p[x];
    }
    void unite(int a, int b){
        a = get(a), b  = get(b);
        if(a == b) return;
        if(sz[b] > sz[a]) swap(a, b);
        sz[a]+=sz[b];
        sz[b] = 0;
        p[b] = a;
    }
};
 
ll minimum_walk(vector<int> p, int s){
    int n = p.size();
    ll ans = 0;
 
    vector<int> C(n, -1), sz;
    int k = 0;
    for(int i = 0; i < n; i++){
        if(C[i] != -1) continue;
        int x = p[i];
        C[i] = k;
        sz.pb(1);
        ans+=abs(i-x);
        while(x != i){
            C[x] = k;
            sz.back()++;
            ans+=abs(p[x]-x);
            x = p[x];
        }
        k++;
    }

    vector<int> first(k, -1), last(k);
    for(int i = 0; i < n; i++){
        if(first[C[i]] == -1) first[C[i]] = i;
        last[C[i]] = i;
    }

    vector<bool> unnecessary(k, 0);
    for(int i = 0; i < n; i++){
        if(sz[C[i]] > 1 || i == s) break;
        unnecessary[C[i]] = 1;
    }
    for(int i = n-1; i >= 0; i--){
        if(sz[C[i]] > 1 || i == s) break;
        unnecessary[C[i]] = 1;
    }

    dsu ds(k);
    for(int i = 0; i < k; i++) for(int j = i+1; j < k; j++){
        if(unnecessary[i] || unnecessary[j]) continue;
        if(last[i] < first[j] || first[i] > last[j]) continue;
        ds.unite(i, j);
    }

    for(int i = 0; i+1 < n; i++){
        if(unnecessary[C[i]] || unnecessary[C[i+1]]) continue;
        if(ds.get(C[i]) != ds.get(C[i+1])) ds.unite(C[i], C[i+1]), ans+=2;
    }

    return ans;
}

Subtask #1

12.0 / 12.0

#	결과	실행 시간	메모리	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	1 ms	212 KB	Output is correct
5	Correct	0 ms	212 KB	Output is correct
6	Correct	1 ms	212 KB	Output is correct
7	Correct	0 ms	300 KB	Output is correct
8	Correct	0 ms	212 KB	Output is correct
9	Correct	0 ms	212 KB	Output is correct
10	Correct	1 ms	296 KB	Output is correct
11	Correct	1 ms	212 KB	Output is correct
12	Correct	1 ms	212 KB	Output is correct
13	Correct	1 ms	300 KB	Output is correct
14	Correct	1 ms	212 KB	Output is correct
15	Correct	1 ms	212 KB	Output is correct
16	Correct	1 ms	296 KB	Output is correct
17	Correct	1 ms	300 KB	Output is correct
18	Correct	1 ms	212 KB	Output is correct

Subtask #2

10.0 / 10.0

#	결과	실행 시간	메모리	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	1 ms	212 KB	Output is correct
5	Correct	0 ms	212 KB	Output is correct
6	Correct	1 ms	212 KB	Output is correct
7	Correct	0 ms	300 KB	Output is correct
8	Correct	0 ms	212 KB	Output is correct
9	Correct	0 ms	212 KB	Output is correct
10	Correct	1 ms	296 KB	Output is correct
11	Correct	1 ms	212 KB	Output is correct
12	Correct	1 ms	212 KB	Output is correct
13	Correct	1 ms	300 KB	Output is correct
14	Correct	1 ms	212 KB	Output is correct
15	Correct	1 ms	212 KB	Output is correct
16	Correct	1 ms	296 KB	Output is correct
17	Correct	1 ms	300 KB	Output is correct
18	Correct	1 ms	212 KB	Output is correct
19	Correct	1 ms	304 KB	Output is correct
20	Correct	1 ms	212 KB	Output is correct
21	Correct	1 ms	296 KB	Output is correct
22	Correct	1 ms	212 KB	Output is correct
23	Correct	1 ms	300 KB	Output is correct
24	Correct	1 ms	212 KB	Output is correct
25	Correct	1 ms	212 KB	Output is correct
26	Correct	1 ms	300 KB	Output is correct
27	Correct	1 ms	212 KB	Output is correct
28	Correct	1 ms	300 KB	Output is correct
29	Correct	2 ms	212 KB	Output is correct

Subtask #3

0 / 28.0

#	결과	실행 시간	메모리	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	1 ms	212 KB	Output is correct
5	Correct	0 ms	212 KB	Output is correct
6	Correct	1 ms	212 KB	Output is correct
7	Correct	0 ms	300 KB	Output is correct
8	Correct	0 ms	212 KB	Output is correct
9	Correct	0 ms	212 KB	Output is correct
10	Correct	1 ms	296 KB	Output is correct
11	Correct	1 ms	212 KB	Output is correct
12	Correct	1 ms	212 KB	Output is correct
13	Correct	1 ms	300 KB	Output is correct
14	Correct	1 ms	212 KB	Output is correct
15	Correct	1 ms	212 KB	Output is correct
16	Correct	1 ms	296 KB	Output is correct
17	Correct	1 ms	300 KB	Output is correct
18	Correct	1 ms	212 KB	Output is correct
19	Correct	1 ms	304 KB	Output is correct
20	Correct	1 ms	212 KB	Output is correct
21	Correct	1 ms	296 KB	Output is correct
22	Correct	1 ms	212 KB	Output is correct
23	Correct	1 ms	300 KB	Output is correct
24	Correct	1 ms	212 KB	Output is correct
25	Correct	1 ms	212 KB	Output is correct
26	Correct	1 ms	300 KB	Output is correct
27	Correct	1 ms	212 KB	Output is correct
28	Correct	1 ms	300 KB	Output is correct
29	Correct	2 ms	212 KB	Output is correct
30	Correct	158 ms	18660 KB	Output is correct
31	Correct	175 ms	18772 KB	Output is correct
32	Execution timed out	2064 ms	38480 KB	Time limit exceeded
33	Halted	0 ms	0 KB	-

Subtask #4

0 / 20.0

#	결과	실행 시간	메모리	Grader output
1	Incorrect	1 ms	212 KB	3rd lines differ - on the 1st token, expected: '3304', found: '2744'
2	Halted	0 ms	0 KB	-

Subtask #5

0 / 30.0

#	결과	실행 시간	메모리	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	1 ms	212 KB	Output is correct
5	Correct	0 ms	212 KB	Output is correct
6	Correct	1 ms	212 KB	Output is correct
7	Correct	0 ms	300 KB	Output is correct
8	Correct	0 ms	212 KB	Output is correct
9	Correct	0 ms	212 KB	Output is correct
10	Correct	1 ms	296 KB	Output is correct
11	Correct	1 ms	212 KB	Output is correct
12	Correct	1 ms	212 KB	Output is correct
13	Correct	1 ms	300 KB	Output is correct
14	Correct	1 ms	212 KB	Output is correct
15	Correct	1 ms	212 KB	Output is correct
16	Correct	1 ms	296 KB	Output is correct
17	Correct	1 ms	300 KB	Output is correct
18	Correct	1 ms	212 KB	Output is correct
19	Correct	1 ms	304 KB	Output is correct
20	Correct	1 ms	212 KB	Output is correct
21	Correct	1 ms	296 KB	Output is correct
22	Correct	1 ms	212 KB	Output is correct
23	Correct	1 ms	300 KB	Output is correct
24	Correct	1 ms	212 KB	Output is correct
25	Correct	1 ms	212 KB	Output is correct
26	Correct	1 ms	300 KB	Output is correct
27	Correct	1 ms	212 KB	Output is correct
28	Correct	1 ms	300 KB	Output is correct
29	Correct	2 ms	212 KB	Output is correct
30	Correct	158 ms	18660 KB	Output is correct
31	Correct	175 ms	18772 KB	Output is correct
32	Execution timed out	2064 ms	38480 KB	Time limit exceeded
33	Halted	0 ms	0 KB	-