Submission #948797

#	Time	Username	Problem	Language	Result	Execution time	Memory
948797		ifateen	Stranded Far From Home (BOI22_island)	C++17	10 / 100	164 ms	884 KiB

island

#include <bits/stdc++.h>
using namespace std;
#define int long long

const int MAXN = 2003;
vector<int> adj[MAXN];
int population[MAXN];

bool djikstra(int start) {
    priority_queue<pair<int, int>, vector<pair<int, int>>, greater<>> pq;
    pq.emplace(0, start);
    int have = population[start];
    vector<bool> vis(MAXN);
    vis[start] = true;
    while (!pq.empty()) {
        auto [need, u] = pq.top();
        pq.pop();
        if (have >= need) have += need;
        else return false;
        for (auto& v : adj[u]) {
            if (vis[v]) continue;
            vis[v] = true;
            pq.emplace(population[v], v);
        }
    }
    return true;
}

signed main() {
    ios_base::sync_with_stdio(false);
    cin.tie(nullptr);
    int n, m;
    cin >> n >> m;
    for (int i = 1; i <= n; ++i) cin >> population[i];
    for (int i = 1; i <= m; ++i) {
        int u, v;
        cin >> u >> v;
        adj[u].push_back(v);
        adj[v].push_back(u);
    }
    for (int i = 1; i <= n; ++i) cout << djikstra(i);
}

• Subtask 1: 10 / 10
• Subtask 2: 0 / 10
• Subtask 3: 0 / 15
• Subtask 4: 0 / 30
• Subtask 5: 0 / 35