oj.uz

Submission #1061532

# Submission time Handle Problem Language Result Execution time Memory
1061532 2024-08-16T10:37:28 Z onbert Ancient Books (IOI17_books) C++17
22 / 100
 953 ms 1048576 KB 
#include "books.h"
#include <bits/stdc++.h>
using namespace std;
#define int long long
const int maxn = 1e6 + 5, INF = 1e9;
int p[maxn], vis[maxn];
vector<pair<int,int>> vec = {{-1, -1}};

int minimum_walk(vector<int32_t> P, int32_t s) {
    int n = P.size();
    for (int i=0;i<n;i++) p[i] = P[i];
    for (int i=0;i<n;i++) vis[i] = 0;
    int ans = 0, cnt = 0;
    for (int i=0;i<n;i++) if (!vis[i]) {
        if (p[i]==i && i==s) {
            cnt++;
            vis[i] = cnt;
            vec.push_back({s, s});
        }
        if (p[i]==i) continue;
        int u = i;
        pair<int,int> val = {u, u};
        cnt++;
        while (true) {
            vis[u] = cnt;
            val.first = min(u, val.first);
            val.second = max(u, val.second);
            int v = p[u];
            ans += abs(v-u);
            if (v==i) break;
            u = v;
        }
        vec.push_back(val);
    }

    sort(vec.begin(), vec.end());
    int lastl = vec[1].first, mx = vec[1].second;
    int LL = -1, RR = -1;
    for (int i=2;i<vec.size();i++) {
        if (vec[i].first > mx) {
            if (lastl<=s && s<=mx) {
                LL = lastl, RR = mx;
            }
            lastl = vec[i].first;
            ans += (vec[i].first - mx)*2;
        }
        mx = max(vec[i].second, mx);
    }
    if (LL == -1) LL = lastl, RR = mx;

    priority_queue<pair<int,int>, vector<pair<int,int>>, greater<pair<int,int>>> pq;
    pq.push({0, vis[s]});
    int dist[cnt+5];
    for (int i=1;i<=cnt;i++) dist[i] = -1;
    while (pq.size() > 0) {
        int u = pq.top().second, d = pq.top().first;
        pq.pop();
        if (vec[u].second < LL || vec[u].first > RR) dist[u] = -2;
        if (dist[u]!=-1) continue;
        dist[u] = d;
        for (int i=vec[u].first; i<=vec[u].second;i++) {
            if (p[i]!=i && dist[vis[i]]==-1) pq.push({d, vis[i]});
        }
        for (int i=vec[u].first-1;i>=LL;i--) {
            if (p[i]!=i) {
                if (dist[vis[i]]==-1) pq.push({d + (vec[u].first - i)*2, vis[i]});
            }
        }
        for (int i=vec[u].second+1;i<=RR;i++) {
            if (p[i]!=i) {
                if (dist[vis[i]]==-1) pq.push({d + (i - vec[u].first)*2, vis[i]});
            }
        }
    }
    for (int i=1;i<=cnt;i++) assert((dist[i]==-1) == (vec[i].first>RR || vec[i].second<LL));
    int MX = 0;
    for (int i=1;i<=cnt;i++) if (dist[i]!=-1) MX = max(dist[i], MX);
    ans += MX;

    return ans;
}

Compilation message

books.cpp: In function 'long long int minimum_walk(std::vector<int>, int32_t)':
books.cpp:39:19: warning: comparison of integer expressions of different signedness: 'long long int' and 'std::vector<std::pair<long long int, long long int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   39 |     for (int i=2;i<vec.size();i++) {
      |                  ~^~~~~~~~~~~

Subtask #1
12.0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 2392 KB Output is correct
2 Correct 1 ms 2396 KB Output is correct
3 Correct 0 ms 2396 KB Output is correct
4 Correct 0 ms 2396 KB Output is correct
5 Correct 1 ms 2396 KB Output is correct
6 Correct 0 ms 2396 KB Output is correct
7 Correct 1 ms 2392 KB Output is correct
8 Correct 0 ms 2396 KB Output is correct
9 Correct 1 ms 2396 KB Output is correct
10 Correct 1 ms 2392 KB Output is correct
11 Correct 1 ms 2392 KB Output is correct
12 Correct 0 ms 2396 KB Output is correct
13 Correct 0 ms 2396 KB Output is correct
14 Correct 0 ms 2396 KB Output is correct
15 Correct 0 ms 2396 KB Output is correct
16 Correct 0 ms 2396 KB Output is correct
17 Correct 0 ms 2396 KB Output is correct
18 Correct 1 ms 2396 KB Output is correct

Subtask #2
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 2392 KB Output is correct
2 Correct 1 ms 2396 KB Output is correct
3 Correct 0 ms 2396 KB Output is correct
4 Correct 0 ms 2396 KB Output is correct
5 Correct 1 ms 2396 KB Output is correct
6 Correct 0 ms 2396 KB Output is correct
7 Correct 1 ms 2392 KB Output is correct
8 Correct 0 ms 2396 KB Output is correct
9 Correct 1 ms 2396 KB Output is correct
10 Correct 1 ms 2392 KB Output is correct
11 Correct 1 ms 2392 KB Output is correct
12 Correct 0 ms 2396 KB Output is correct
13 Correct 0 ms 2396 KB Output is correct
14 Correct 0 ms 2396 KB Output is correct
15 Correct 0 ms 2396 KB Output is correct
16 Correct 0 ms 2396 KB Output is correct
17 Correct 0 ms 2396 KB Output is correct
18 Correct 1 ms 2396 KB Output is correct
19 Correct 1 ms 2392 KB Output is correct
20 Correct 1 ms 2396 KB Output is correct
21 Correct 1 ms 2396 KB Output is correct
22 Correct 0 ms 2396 KB Output is correct
23 Correct 1 ms 2392 KB Output is correct
24 Correct 0 ms 2396 KB Output is correct
25 Correct 0 ms 2396 KB Output is correct
26 Correct 1 ms 2396 KB Output is correct
27 Correct 0 ms 2396 KB Output is correct
28 Correct 1 ms 2392 KB Output is correct
29 Correct 7 ms 3536 KB Output is correct

Subtask #3
0 / 28.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 2392 KB Output is correct
2 Correct 1 ms 2396 KB Output is correct
3 Correct 0 ms 2396 KB Output is correct
4 Correct 0 ms 2396 KB Output is correct
5 Correct 1 ms 2396 KB Output is correct
6 Correct 0 ms 2396 KB Output is correct
7 Correct 1 ms 2392 KB Output is correct
8 Correct 0 ms 2396 KB Output is correct
9 Correct 1 ms 2396 KB Output is correct
10 Correct 1 ms 2392 KB Output is correct
11 Correct 1 ms 2392 KB Output is correct
12 Correct 0 ms 2396 KB Output is correct
13 Correct 0 ms 2396 KB Output is correct
14 Correct 0 ms 2396 KB Output is correct
15 Correct 0 ms 2396 KB Output is correct
16 Correct 0 ms 2396 KB Output is correct
17 Correct 0 ms 2396 KB Output is correct
18 Correct 1 ms 2396 KB Output is correct
19 Correct 1 ms 2392 KB Output is correct
20 Correct 1 ms 2396 KB Output is correct
21 Correct 1 ms 2396 KB Output is correct
22 Correct 0 ms 2396 KB Output is correct
23 Correct 1 ms 2392 KB Output is correct
24 Correct 0 ms 2396 KB Output is correct
25 Correct 0 ms 2396 KB Output is correct
26 Correct 1 ms 2396 KB Output is correct
27 Correct 0 ms 2396 KB Output is correct
28 Correct 1 ms 2392 KB Output is correct
29 Correct 7 ms 3536 KB Output is correct
30 Correct 137 ms 28608 KB Output is correct
31 Correct 212 ms 41912 KB Output is correct
32 Correct 63 ms 23804 KB Output is correct
33 Correct 77 ms 28524 KB Output is correct
34 Correct 71 ms 28352 KB Output is correct
35 Correct 74 ms 29288 KB Output is correct
36 Correct 79 ms 29892 KB Output is correct
37 Correct 66 ms 24524 KB Output is correct
38 Correct 68 ms 24060 KB Output is correct
39 Correct 67 ms 24144 KB Output is correct
40 Correct 70 ms 24148 KB Output is correct
41 Correct 86 ms 24456 KB Output is correct
42 Correct 81 ms 23816 KB Output is correct
43 Runtime error 953 ms 1048576 KB Execution killed with signal 9
44 Halted 0 ms 0 KB -

Subtask #4
0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 6 ms 3028 KB Output is correct
2 Correct 5 ms 3032 KB Output is correct
3 Correct 7 ms 3540 KB Output is correct
4 Correct 0 ms 2396 KB Output is correct
5 Correct 0 ms 2396 KB Output is correct
6 Correct 7 ms 3540 KB Output is correct
7 Correct 8 ms 3604 KB Output is correct
8 Incorrect 14 ms 4556 KB 3rd lines differ - on the 1st token, expected: '10478', found: '10504'
9 Halted 0 ms 0 KB -

Subtask #5
0 / 30.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 2392 KB Output is correct
2 Correct 1 ms 2396 KB Output is correct
3 Correct 0 ms 2396 KB Output is correct
4 Correct 0 ms 2396 KB Output is correct
5 Correct 1 ms 2396 KB Output is correct
6 Correct 0 ms 2396 KB Output is correct
7 Correct 1 ms 2392 KB Output is correct
8 Correct 0 ms 2396 KB Output is correct
9 Correct 1 ms 2396 KB Output is correct
10 Correct 1 ms 2392 KB Output is correct
11 Correct 1 ms 2392 KB Output is correct
12 Correct 0 ms 2396 KB Output is correct
13 Correct 0 ms 2396 KB Output is correct
14 Correct 0 ms 2396 KB Output is correct
15 Correct 0 ms 2396 KB Output is correct
16 Correct 0 ms 2396 KB Output is correct
17 Correct 0 ms 2396 KB Output is correct
18 Correct 1 ms 2396 KB Output is correct
19 Correct 1 ms 2392 KB Output is correct
20 Correct 1 ms 2396 KB Output is correct
21 Correct 1 ms 2396 KB Output is correct
22 Correct 0 ms 2396 KB Output is correct
23 Correct 1 ms 2392 KB Output is correct
24 Correct 0 ms 2396 KB Output is correct
25 Correct 0 ms 2396 KB Output is correct
26 Correct 1 ms 2396 KB Output is correct
27 Correct 0 ms 2396 KB Output is correct
28 Correct 1 ms 2392 KB Output is correct
29 Correct 7 ms 3536 KB Output is correct
30 Correct 137 ms 28608 KB Output is correct
31 Correct 212 ms 41912 KB Output is correct
32 Correct 63 ms 23804 KB Output is correct
33 Correct 77 ms 28524 KB Output is correct
34 Correct 71 ms 28352 KB Output is correct
35 Correct 74 ms 29288 KB Output is correct
36 Correct 79 ms 29892 KB Output is correct
37 Correct 66 ms 24524 KB Output is correct
38 Correct 68 ms 24060 KB Output is correct
39 Correct 67 ms 24144 KB Output is correct
40 Correct 70 ms 24148 KB Output is correct
41 Correct 86 ms 24456 KB Output is correct
42 Correct 81 ms 23816 KB Output is correct
43 Runtime error 953 ms 1048576 KB Execution killed with signal 9
44 Halted 0 ms 0 KB -