Submission #848192

#	Time	Username	Problem	Language	Result	Execution time	Memory
848192		Alora	Stranded Far From Home (BOI22_island)	C++17	10 / 100	272 ms	16480 KiB

island

#include <bits/stdc++.h>
#define name "cownav"
#define fi(i,a,b) for(int i = a; i <= b; i++)
#define fid(i,a,b) for(int i = a; i >= b; i--)
#define ll long long
#define f first
#define se second
#define pii pair<int, ll>
#define getbit(i, j) ((i >> j) & 1)
#define pb push_back
#define all(v) v.begin(), v.end()
#define maxn 200005
const int M = 1e9 + 7;
using namespace std;
mt19937_64 rng(time(0));
int n, m, a[maxn];
vector <int> g[maxn];
priority_queue <pii> q;
bool xd[maxn];

bool check(int x){
    fi(i, 1, n) xd[i] = 0;
    xd[x] = 1;
    ll sum = a[x];
    while(q.size()) q.pop();
    for(auto v: g[x]) xd[v] = 1, q.push({-a[v], v});
    while(q.size()){
        auto [h, u] = q.top(); q.pop();
        if(sum < a[u]) return 0;
        sum += a[u];
        for(auto v: g[u]) if(!xd[v]) xd[v] = 1, q.push({-a[v], v});
    }
    return 1;
}

signed main(){
	ios_base::sync_with_stdio(0);
	cin.tie(NULL);
//	freopen(name".inp","r",stdin);
	//freopen(name".out","w",stdout);
    cin >> n >> m;
    fi(i, 1, n) cin >> a[i];
    fi(i, 1, m){
        int u, v; cin >> u >> v;
        g[u].pb(v); g[v].pb(u);
    }
    if(n <= 2000 && m <= 2000){
        fi(i, 1, n) cout << check(i);
        return 0;
    }
	return 0;
}

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