oj.uz

Submission #888867

# Submission time Handle Problem Language Result Execution time Memory
888867 2023-12-18T10:00:33 Z viwlesxq Passport (JOI23_passport) C++17
16 / 100
 2000 ms 1048576 KB 
#include <bits/stdc++.h>
using namespace std;
typedef int64_t ll;
#define all(x) x.begin(), x.end()
#define size(x) (int)x.size()

template<class S, class T> 
bool chmin(S &a, const T &b) {
    return (a > b ? (a = b) == b : false);
}
template<class S, class T> 
bool chmax(S &a, const T &b) {
    return (a < b ? (a = b) == b : false);
}
const int inf = 1e9;
const ll INF = 1e18;
const int mod = 998244353;

signed main() {
    cin.tie(nullptr)->sync_with_stdio(false);
    int n;
    cin >> n;
    int l[n], r[n];
    vector<vector<int>> d(n, vector<int> (n, inf));
    for (int i = 0; i < n; ++i) {
        cin >> l[i] >> r[i];
        l[i]--, r[i]--;
    }
    int q;
    cin >> q;
    while (q--) {
        int x;
        cin >> x;
        x--;
        if (!x) {
            int res = 0, last = -1;
            bool flag = true;
            priority_queue<int> q;
            q.push(r[x]);
            for (int i = 1; i < n; ++i) {
                if (last < i) {
                    if (q.empty() || q.top() < i) {
                        flag = false;
                        break;
                    }
                    last = q.top();
                    q.pop();
                    res++;
                }
                q.push(r[i]);
            }
            cout << (flag ? res : -1) << '\n';
        } else {
            queue<pair<int, int>> q;
            d[l[x]][r[x]] = 1;
            q.push({l[x], r[x]});
            while (!q.empty()) {
                auto [L, R] = q.front(); 
                q.pop();
                for (int i = L; i <= R; ++i) {
                    int new_l = min(L, l[i]), new_r = max(R, r[i]);
                    if (chmin(d[new_l][new_r], d[L][R] + 1)) {
                        q.push({new_l, new_r});
                    }
                }
            }
            cout << (d[0][n - 1] == inf ? -1 : d[0][n - 1]) << '\n';
        }
    }
}

Subtask #1
0 / 6.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 344 KB Output is correct
2 Correct 0 ms 344 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Runtime error 437 ms 1048576 KB Execution killed with signal 9
5 Halted 0 ms 0 KB -

Subtask #2
16.0 / 16.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 0 ms 348 KB Output is correct
7 Correct 0 ms 348 KB Output is correct
8 Correct 0 ms 348 KB Output is correct
9 Correct 0 ms 348 KB Output is correct
10 Correct 0 ms 348 KB Output is correct
11 Correct 2 ms 604 KB Output is correct
12 Correct 3 ms 604 KB Output is correct
13 Correct 1 ms 604 KB Output is correct
14 Correct 1 ms 756 KB Output is correct
15 Correct 4 ms 604 KB Output is correct

Subtask #3
0 / 24.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 0 ms 348 KB Output is correct
7 Correct 0 ms 348 KB Output is correct
8 Correct 0 ms 348 KB Output is correct
9 Correct 0 ms 348 KB Output is correct
10 Correct 0 ms 348 KB Output is correct
11 Correct 2 ms 604 KB Output is correct
12 Correct 3 ms 604 KB Output is correct
13 Correct 1 ms 604 KB Output is correct
14 Correct 1 ms 756 KB Output is correct
15 Correct 4 ms 604 KB Output is correct
16 Correct 1409 ms 23752 KB Output is correct
17 Correct 1114 ms 24732 KB Output is correct
18 Correct 32 ms 25172 KB Output is correct
19 Correct 42 ms 23712 KB Output is correct
20 Execution timed out 2096 ms 24920 KB Time limit exceeded
21 Halted 0 ms 0 KB -

Subtask #4
0 / 8.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 0 ms 348 KB Output is correct
7 Correct 0 ms 348 KB Output is correct
8 Correct 0 ms 348 KB Output is correct
9 Correct 0 ms 348 KB Output is correct
10 Correct 0 ms 348 KB Output is correct
11 Correct 2 ms 604 KB Output is correct
12 Correct 3 ms 604 KB Output is correct
13 Correct 1 ms 604 KB Output is correct
14 Correct 1 ms 756 KB Output is correct
15 Correct 4 ms 604 KB Output is correct
16 Correct 1409 ms 23752 KB Output is correct
17 Correct 1114 ms 24732 KB Output is correct
18 Correct 32 ms 25172 KB Output is correct
19 Correct 42 ms 23712 KB Output is correct
20 Execution timed out 2096 ms 24920 KB Time limit exceeded
21 Halted 0 ms 0 KB -

Subtask #5
0 / 46.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 344 KB Output is correct
2 Correct 0 ms 344 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Runtime error 437 ms 1048576 KB Execution killed with signal 9
5 Halted 0 ms 0 KB -