oj.uz

답안 #747846

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
747846 2023-05-24T22:03:49 Z stevancv Passport (JOI23_passport) C++14
48 / 100
 2000 ms 121680 KB 
#include <bits/stdc++.h>
#define ll long long
#define ld long double
#define sp ' '
#define en '\n'
#define smin(a, b) a = min(a, b)
#define smax(a, b) a = max(a, b)
using namespace std;
const int N = 2e5 + 2;
const int inf = 1e9;
int n, l[N], r[N];
int dl[5 * N], dr[5 * N], dist[5 * N], gde[N];
void Init(int node, int l, int r) {
    if (l == r) {gde[l] = node; return;}
    int mid = l + r >> 1;
    Init(2 * node, l, mid);
    Init(2 * node + 1, mid + 1, r);
}
vector<int> g[5 * N];
void Add(int node, int l, int r, int ql, int qr, int i) {
    if (r < ql || qr < l) return;
    if (ql <= l && r <= qr) {
        g[i].push_back(n + node);
        g[n + node].push_back(i);
        return;
    }
    int mid = l + r >> 1;
    Add(2 * node, l, mid, ql, qr, i);
    Add(2 * node + 1, mid + 1, r, ql, qr, i);
}
void Bfs(int* d) {
    set<pair<int, int>> st;
    for (int i = 1; i <= 5 * n; i++) st.insert({d[i], i});
    while (!st.empty()) {
        auto it = st.begin();
        int s = it->second;
        st.erase(it);
        if (s <= n) {
            for (int u = gde[s]; u >= 1; u /= 2) {
                if (d[u + n] > d[s]) {
                    st.erase({d[u + n], u + n});
                    d[u + n] = d[s];
                    st.insert({d[u + n], u + n});
                }
            }
            continue;
        }
        for (int u : g[s]) {
            if (d[u] > d[s] + 1) {
                st.erase({d[u], u});
                d[u] = d[s] + 1;
                st.insert({d[u], u});
            }
        }
    }
}
int main() {
    ios::sync_with_stdio(false);
    cin.tie(0);
    cout.tie(0);
    cin >> n;
    Init(1, 1, n);
    for (int i = 1; i <= n; i++) {
        cin >> l[i] >> r[i];
        Add(1, 1, n, l[i], r[i], i);
    }
    for (int i = 1; i <= 5 * n; i++) dl[i] = dr[i] = dist[i] = inf;
    dl[1] = 0; dr[n] = 0;
    Bfs(dl); Bfs(dr);
    dl[1] = 1; dr[n] = 1;
    for (int i = 1; i <= n; i++) dist[i] = dl[i] + dr[i];
    Bfs(dist);
    for (int i = 1; i <= n; i++) {
        if (dist[i] >= inf) dist[i] = -1;
        else dist[i] -= 1;
    }
    int q; cin >> q;
    while (q--) {
        int x; cin >> x;
        cout << dist[x] << en;
    }
    return 0;
}

Compilation message

passport.cpp: In function 'void Init(int, int, int)':
passport.cpp:15:17: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
   15 |     int mid = l + r >> 1;
      |               ~~^~~
passport.cpp: In function 'void Add(int, int, int, int, int, int)':
passport.cpp:27:17: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
   27 |     int mid = l + r >> 1;
      |               ~~^~~

Subtask #1
0 / 6.0

# 결과 실행 시간 메모리 Grader output
1 Correct 12 ms 23764 KB Output is correct
2 Correct 12 ms 23724 KB Output is correct
3 Correct 12 ms 23764 KB Output is correct
4 Execution timed out 2012 ms 121680 KB Time limit exceeded
5 Halted 0 ms 0 KB -

Subtask #2
16.0 / 16.0

# 결과 실행 시간 메모리 Grader output
1 Correct 13 ms 23764 KB Output is correct
2 Correct 13 ms 23788 KB Output is correct
3 Correct 15 ms 23748 KB Output is correct
4 Correct 14 ms 23764 KB Output is correct
5 Correct 12 ms 23756 KB Output is correct
6 Correct 18 ms 23828 KB Output is correct
7 Correct 14 ms 23760 KB Output is correct
8 Correct 13 ms 23764 KB Output is correct
9 Correct 13 ms 23764 KB Output is correct
10 Correct 17 ms 23808 KB Output is correct
11 Correct 15 ms 23848 KB Output is correct
12 Correct 19 ms 23896 KB Output is correct
13 Correct 15 ms 23892 KB Output is correct
14 Correct 15 ms 23936 KB Output is correct
15 Correct 14 ms 23936 KB Output is correct

Subtask #3
24.0 / 24.0

# 결과 실행 시간 메모리 Grader output
1 Correct 13 ms 23764 KB Output is correct
2 Correct 13 ms 23788 KB Output is correct
3 Correct 15 ms 23748 KB Output is correct
4 Correct 14 ms 23764 KB Output is correct
5 Correct 12 ms 23756 KB Output is correct
6 Correct 18 ms 23828 KB Output is correct
7 Correct 14 ms 23760 KB Output is correct
8 Correct 13 ms 23764 KB Output is correct
9 Correct 13 ms 23764 KB Output is correct
10 Correct 17 ms 23808 KB Output is correct
11 Correct 15 ms 23848 KB Output is correct
12 Correct 19 ms 23896 KB Output is correct
13 Correct 15 ms 23892 KB Output is correct
14 Correct 15 ms 23936 KB Output is correct
15 Correct 14 ms 23936 KB Output is correct
16 Correct 33 ms 24788 KB Output is correct
17 Correct 26 ms 24808 KB Output is correct
18 Correct 28 ms 24880 KB Output is correct
19 Correct 31 ms 25148 KB Output is correct
20 Correct 24 ms 24724 KB Output is correct
21 Correct 25 ms 24828 KB Output is correct
22 Correct 26 ms 24660 KB Output is correct
23 Correct 33 ms 24764 KB Output is correct
24 Correct 25 ms 24840 KB Output is correct

Subtask #4
8.0 / 8.0

# 결과 실행 시간 메모리 Grader output
1 Correct 13 ms 23764 KB Output is correct
2 Correct 13 ms 23788 KB Output is correct
3 Correct 15 ms 23748 KB Output is correct
4 Correct 14 ms 23764 KB Output is correct
5 Correct 12 ms 23756 KB Output is correct
6 Correct 18 ms 23828 KB Output is correct
7 Correct 14 ms 23760 KB Output is correct
8 Correct 13 ms 23764 KB Output is correct
9 Correct 13 ms 23764 KB Output is correct
10 Correct 17 ms 23808 KB Output is correct
11 Correct 15 ms 23848 KB Output is correct
12 Correct 19 ms 23896 KB Output is correct
13 Correct 15 ms 23892 KB Output is correct
14 Correct 15 ms 23936 KB Output is correct
15 Correct 14 ms 23936 KB Output is correct
16 Correct 33 ms 24788 KB Output is correct
17 Correct 26 ms 24808 KB Output is correct
18 Correct 28 ms 24880 KB Output is correct
19 Correct 31 ms 25148 KB Output is correct
20 Correct 24 ms 24724 KB Output is correct
21 Correct 25 ms 24828 KB Output is correct
22 Correct 26 ms 24660 KB Output is correct
23 Correct 33 ms 24764 KB Output is correct
24 Correct 25 ms 24840 KB Output is correct
25 Correct 13 ms 23764 KB Output is correct
26 Correct 15 ms 23764 KB Output is correct
27 Correct 29 ms 24872 KB Output is correct
28 Correct 30 ms 24788 KB Output is correct
29 Correct 25 ms 24836 KB Output is correct
30 Correct 31 ms 24824 KB Output is correct
31 Correct 27 ms 24788 KB Output is correct

Subtask #5
0 / 46.0

# 결과 실행 시간 메모리 Grader output
1 Correct 12 ms 23764 KB Output is correct
2 Correct 12 ms 23724 KB Output is correct
3 Correct 12 ms 23764 KB Output is correct
4 Execution timed out 2012 ms 121680 KB Time limit exceeded
5 Halted 0 ms 0 KB -