oj.uz

Submission #888889

# Submission time Handle Problem Language Result Execution time Memory
888889 2023-12-18T10:39:53 Z Alihan_8 Passport (JOI23_passport) C++17
22 / 100
 2000 ms 49752 KB 
#include <bits/stdc++.h>

using namespace std;

#define all(x) x.begin(), x.end()
#define ar array
#define pb push_back
#define ln '\n'
#define int long long

using i64 = long long;

template <class F, class _S>
bool chmin(F &u, const _S &v){
    bool flag = false;
    if ( u > v ){
        u = v; flag |= true;
    }
    return flag;
}

template <class F, class _S>
bool chmax(F &u, const _S &v){
    bool flag = false;
    if ( u < v ){
        u = v; flag |= true;
    }
    return flag;
}

signed main(){
    ios_base::sync_with_stdio(false);
    cin.tie(nullptr);

    int n; cin >> n;
    vector <int> L(n), R(n);
    for ( int i = 0; i < n; i++ ){
        cin >> L[i] >> R[i];
        --L[i], --R[i];
    }
    int qq; cin >> qq;
    while ( qq-- ){
        int s; cin >> s;
        --s;
        if ( !s ){
            int ans = 0, lst = -1;
            bool flag = true;
            priority_queue <int> q;
            q.push(R[s]);
            for ( int i = 1; i < n; i++ ){
                if ( lst < i ){
                    if ( q.empty() || q.top() < i ){
                        flag = false;
                        break;
                    }
                    lst = q.top();
                    q.pop(); ++ans;
                } q.push(R[i]);
            }
            cout << (flag ? ans : -1) << ln;
            continue;
        }
        const int inf = 1e15;
        vector <vector<int>> dp(n, vector <int> (n, inf));
        dp[L[s]][R[s]] = 1;
        queue <ar<int,2>> q;
        q.push({L[s], R[s]});
        while ( !q.empty() ){
            auto [u, v] = q.front();
            q.pop();
            for ( int j = u; j <= v; j++ ){
                int x = min(u, L[j]), y = max(v, R[j]);
                if ( chmin(dp[x][y], dp[u][v] + 1) ){
                    q.push({x, y});
                }
            }
        }
        int ans = dp[0][n - 1];
        if ( ans == inf ){
            ans = -1;
        }
        cout << ans << ln;
    }

    cout << '\n';
}

Subtask #1
6.0 / 6.0

# 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 28 ms 5712 KB Output is correct
5 Correct 33 ms 5724 KB Output is correct
6 Correct 24 ms 3416 KB Output is correct
7 Correct 21 ms 5592 KB Output is correct
8 Correct 17 ms 4060 KB Output is correct

Subtask #2
16.0 / 16.0

# 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 Correct 0 ms 348 KB Output is correct
5 Correct 0 ms 404 KB Output is correct
6 Correct 0 ms 344 KB Output is correct
7 Correct 0 ms 348 KB Output is correct
8 Correct 0 ms 348 KB Output is correct
9 Correct 1 ms 348 KB Output is correct
10 Correct 0 ms 348 KB Output is correct
11 Correct 2 ms 1120 KB Output is correct
12 Correct 2 ms 1116 KB Output is correct
13 Correct 1 ms 1116 KB Output is correct
14 Correct 1 ms 1116 KB Output is correct
15 Correct 3 ms 1116 KB Output is correct

Subtask #3
0 / 24.0

# 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 Correct 0 ms 348 KB Output is correct
5 Correct 0 ms 404 KB Output is correct
6 Correct 0 ms 344 KB Output is correct
7 Correct 0 ms 348 KB Output is correct
8 Correct 0 ms 348 KB Output is correct
9 Correct 1 ms 348 KB Output is correct
10 Correct 0 ms 348 KB Output is correct
11 Correct 2 ms 1120 KB Output is correct
12 Correct 2 ms 1116 KB Output is correct
13 Correct 1 ms 1116 KB Output is correct
14 Correct 1 ms 1116 KB Output is correct
15 Correct 3 ms 1116 KB Output is correct
16 Correct 1658 ms 46836 KB Output is correct
17 Correct 809 ms 49228 KB Output is correct
18 Correct 35 ms 49752 KB Output is correct
19 Correct 42 ms 46684 KB Output is correct
20 Execution timed out 2060 ms 49500 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 344 KB Output is correct
2 Correct 0 ms 344 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 404 KB Output is correct
6 Correct 0 ms 344 KB Output is correct
7 Correct 0 ms 348 KB Output is correct
8 Correct 0 ms 348 KB Output is correct
9 Correct 1 ms 348 KB Output is correct
10 Correct 0 ms 348 KB Output is correct
11 Correct 2 ms 1120 KB Output is correct
12 Correct 2 ms 1116 KB Output is correct
13 Correct 1 ms 1116 KB Output is correct
14 Correct 1 ms 1116 KB Output is correct
15 Correct 3 ms 1116 KB Output is correct
16 Correct 1658 ms 46836 KB Output is correct
17 Correct 809 ms 49228 KB Output is correct
18 Correct 35 ms 49752 KB Output is correct
19 Correct 42 ms 46684 KB Output is correct
20 Execution timed out 2060 ms 49500 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 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 28 ms 5712 KB Output is correct
5 Correct 33 ms 5724 KB Output is correct
6 Correct 24 ms 3416 KB Output is correct
7 Correct 21 ms 5592 KB Output is correct
8 Correct 17 ms 4060 KB Output is correct
9 Correct 0 ms 344 KB Output is correct
10 Correct 0 ms 344 KB Output is correct
11 Correct 0 ms 348 KB Output is correct
12 Correct 0 ms 348 KB Output is correct
13 Correct 0 ms 404 KB Output is correct
14 Correct 0 ms 344 KB Output is correct
15 Correct 0 ms 348 KB Output is correct
16 Correct 0 ms 348 KB Output is correct
17 Correct 1 ms 348 KB Output is correct
18 Correct 0 ms 348 KB Output is correct
19 Correct 2 ms 1120 KB Output is correct
20 Correct 2 ms 1116 KB Output is correct
21 Correct 1 ms 1116 KB Output is correct
22 Correct 1 ms 1116 KB Output is correct
23 Correct 3 ms 1116 KB Output is correct
24 Correct 1658 ms 46836 KB Output is correct
25 Correct 809 ms 49228 KB Output is correct
26 Correct 35 ms 49752 KB Output is correct
27 Correct 42 ms 46684 KB Output is correct
28 Execution timed out 2060 ms 49500 KB Time limit exceeded
29 Halted 0 ms 0 KB -