Submission #589862

#	Time	Username	Problem	Language	Result	Execution time	Memory
589862		1zaid1	Stranded Far From Home (BOI22_island)	C++17	0 / 100	44 ms	888 KiB

island

#include <bits/stdc++.h>
using namespace std;
#define endl '\n'
const int M = 4e3+1;
#define int long long
vector<int> node[M];
int p[M];

bool bfs(int s) {
    bitset<100005> vis;
    int sum = p[s];
    queue<int> q;
    vis[s] = 1;
    q.push(s);
    while (!q.empty()) {
        int t = q.front(); q.pop();
        for (int i:node[t]) {
            if (!vis[i]) {
                if (p[i] > sum) return 0;
                sum += p[i];
                vis[i] = 1;
                q.push(i);
            }
        }
    } return true;
}

signed main() {
    cin.tie(0)->sync_with_stdio(0);

    int n, m;
    cin >> n >> m;

    for (int i = 1; i <= n; i++) cin >> p[i];
    for (int i = 1; i <= m; i++) {
        int a, b;
        cin >> a >> b;

        node[a].push_back(b);
        node[b].push_back(a);
    }

    for (int i = 1; i <= n; i++) sort(node[i].begin(), node[i].end(),[](int a, int b) {return p[a] < p[b];});
    for (int i = 1; i <= n; i++) cout << bfs(i); cout << endl;

    return 0;
}
/*
4 4
2 2 4 3
1 2
1 3
2 3
3 4

4 3
4 2 2 1
1 2
3 2
4 1
*/

Compilation message (stderr)

island.cpp: In function 'int main()':
island.cpp:44:5: warning: this 'for' clause does not guard... [-Wmisleading-indentation]
   44 |     for (int i = 1; i <= n; i++) cout << bfs(i); cout << endl;
      |     ^~~
island.cpp:44:50: note: ...this statement, but the latter is misleadingly indented as if it were guarded by the 'for'
   44 |     for (int i = 1; i <= n; i++) cout << bfs(i); cout << endl;
      |                                                  ^~~~

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