oj.uz

Submission #694979

# Submission time Handle Problem Language Result Execution time Memory
694979 2023-02-04T16:24:24 Z finn__ Stranded Far From Home (BOI22_island) C++17
10 / 100
 1000 ms 18948 KB 
#include <bits/stdc++.h>
using namespace std;

int main()
{
    size_t n, m;
    cin >> n >> m;

    vector<uint64_t> s(n);
    uint64_t total_size = 0;
    for (uint64_t &x : s)
        cin >> x, total_size += x;

    vector<pair<unsigned, unsigned>> p(n);
    for (size_t i = 0; i < n; i++)
        p[i] = {s[i], i};
    sort(p.begin(), p.end());

    vector<vector<unsigned>> g(n);
    for (size_t i = 0; i < m; i++)
    {
        unsigned u, v;
        cin >> u >> v;
        g[u - 1].push_back(v - 1);
        g[v - 1].push_back(u - 1);
    }

    vector<bool> z(n, 0);

    for (auto const &[___, i] : p)
    {
        if (z[i])
            continue;

        priority_queue<pair<unsigned, unsigned>, vector<pair<unsigned, unsigned>>, greater<pair<unsigned, unsigned>>> q;
        vector<bool> visited(n, 0);
        visited[i] = 1;
        uint64_t curr_size = s[i];
        for (unsigned const &v : g[i])
            q.emplace(s[v], v), visited[v] = 1;

        while (!q.empty())
        {
            auto const [x, u] = q.top();
            q.pop();
            if (x > curr_size)
                break;
            curr_size += x;
            for (unsigned const &v : g[u])
                if (!visited[v])
                {
                    q.emplace(s[v], v);
                    visited[v] = 1;
                }
        }

        z[i] = curr_size == total_size;

        if (z[i])
        {
            queue<unsigned> q;
            for (unsigned const &v : g[i])
                if (s[v] >= s[i] && !z[v])
                    q.push(v);
            while (!q.empty())
            {
                z[q.front()] = 1;
                for (unsigned const &v : g[q.front()])
                    if (s[v] >= s[q.front()] && !z[v])
                        q.push(v);
                q.pop();
            }
        }
    }

    for (size_t i = 0; i < n; i++)
        cout << (unsigned)z[i];
    cout << '\n';
}

Subtask #1
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 1 ms 296 KB Output is correct
3 Correct 0 ms 212 KB Output is correct
4 Correct 68 ms 344 KB Output is correct
5 Correct 77 ms 456 KB Output is correct
6 Correct 3 ms 440 KB Output is correct
7 Correct 73 ms 436 KB Output is correct
8 Correct 42 ms 340 KB Output is correct
9 Correct 195 ms 444 KB Output is correct
10 Correct 36 ms 468 KB Output is correct
11 Correct 37 ms 468 KB Output is correct
12 Correct 31 ms 340 KB Output is correct
13 Correct 98 ms 440 KB Output is correct
14 Correct 87 ms 444 KB Output is correct

Subtask #2
0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 212 KB Output is correct
2 Correct 1 ms 212 KB Output is correct
3 Execution timed out 1079 ms 18852 KB Time limit exceeded
4 Halted 0 ms 0 KB -

Subtask #3
0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 212 KB Output is correct
2 Execution timed out 1069 ms 18900 KB Time limit exceeded
3 Halted 0 ms 0 KB -

Subtask #4
0 / 30.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 212 KB Output is correct
2 Execution timed out 1085 ms 18948 KB Time limit exceeded
3 Halted 0 ms 0 KB -

Subtask #5
0 / 35.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 1 ms 296 KB Output is correct
3 Correct 0 ms 212 KB Output is correct
4 Correct 68 ms 344 KB Output is correct
5 Correct 77 ms 456 KB Output is correct
6 Correct 3 ms 440 KB Output is correct
7 Correct 73 ms 436 KB Output is correct
8 Correct 42 ms 340 KB Output is correct
9 Correct 195 ms 444 KB Output is correct
10 Correct 36 ms 468 KB Output is correct
11 Correct 37 ms 468 KB Output is correct
12 Correct 31 ms 340 KB Output is correct
13 Correct 98 ms 440 KB Output is correct
14 Correct 87 ms 444 KB Output is correct
15 Correct 1 ms 212 KB Output is correct
16 Correct 1 ms 212 KB Output is correct
17 Execution timed out 1079 ms 18852 KB Time limit exceeded
18 Halted 0 ms 0 KB -