Submission #654403

#	Time	Username	Problem	Language	Result	Execution time	Memory
654403		atigun	Stranded Far From Home (BOI22_island)	C++14	10 / 100	414 ms	724 KiB

island

#include<bits/stdc++.h>

using namespace std;
typedef long long ll;

const int maxn = 2e3;

int n, m;
vector<ll> a(maxn+5);
vector<vector<int>> g(maxn+5);
vector<bool> vis(maxn+5, 0);

bool test(int V){
  for(int i = 0; i < maxn+5; i++)
    vis[i] = 0;
  priority_queue<array<ll, 2>, vector<array<ll, 2>>, greater<array<ll, 2>>> PQ;
  int took = 0;
  ll curr_size = 0;
  PQ.push({0, V});
  while(!PQ.empty()){
    int v = PQ.top()[1];
    PQ.pop();
    if(vis[v])
      continue;
    vis[v] = 1;
    if(V!=v && a[v] > curr_size){
      return 0;
    }
    took++;
    curr_size+= a[v];
    for(int u : g[v]){
      if(!vis[u]){
        PQ.push({a[u], u});
      }
    }
  }
  return (took == n);
}

void solve(){
  cin >> n >> m;
  for(int i = 1; i <= n; i++)
    cin >> a[i];
  for(int i = 0; i < m; i++){
    int a, b;
    cin >> a >> b;
    g[a].push_back(b);
    g[b].push_back(a);
  }
  for(int i = 1; i <= n; i++)
    cout << test(i);
  cout << "\n";
}

int main(){
  ios::sync_with_stdio(false);
  cin.tie(0);
  int tt = 1;
  // cin >> tt;
  while(tt--){
    solve();
  }
}

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