Submission #641556

#	Time	Username	Problem	Language	Result	Execution time	Memory
641556		christinelynn	Stranded Far From Home (BOI22_island)	C++17	0 / 100	1081 ms	25828 KiB

island

#include <bits/stdc++.h>
using namespace std;
typedef long long ll;

const int N = 2e5 + 5;
vector<int> g[N];
int a[N], n, m;
ll cur = 0, cnt = 1;
bool vis[N];

void dfs(int v) {
    for(auto u : g[v]) {
        if(cur >= a[u] && !vis[u]) {
            vis[u] = 1;
            cur += a[u];
            cnt++;
            dfs(u);
        }
    }
}

int main() 
{
    cin.tie(0); ios_base::sync_with_stdio(0);  
    
    cin >> n >> m;
    for(int i = 0; i < n; i++) cin >> a[i];
    for(int i = 0; i < m; i++) {
        int u, v;
        cin >> u >> v;
        u--, v--;
        g[u].push_back(v);
        g[v].push_back(u);
    }

    for(int i = 0; i < n; i++) {
        sort(g[i].begin(), g[i].end(), [&](int x, int y) {
            return a[x] < a[y];
        });
    }
    
    for(int i = 0; i < n; i++) {
        cnt = 1;
        vis[i] = 1;
        cur = a[i];
        dfs(i);
        for(int j = 0; j < n; j++) vis[j] = 0;

        if(cnt == n) {
            cout << '1';
        } else {
            cout << '0';
        }
    }
}

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