Submission #587111

#	Time	Username	Problem	Language	Result	Execution time	Memory
587111		BT21tata	Stranded Far From Home (BOI22_island)	C++17	0 / 100	4 ms	724 KiB

island

#include<bits/stdc++.h>
// #include <ext/pb_ds/assoc_container.hpp>
// using namespace __gnu_pbds;
// #pragma GCC target ("avx,avx2,fma")
// #pragma GCC optimize("Ofast")
// #pragma GCC optimize("unroll-loops")
typedef long long ll;
typedef long double ld;
typedef unsigned long long ull;
#define SPEED ios_base::sync_with_stdio(false); cin.tie(0), cout.tie(0)
#define rall(v) (v).rbegin(),(v).rend()
#define all(v) (v).begin(),(v).end()
#define setp fixed<<setprecision
#define OK cerr<<"OK"<<endl<<flush
#define pii pair<int, int>
#define pll pair<ll, ll>
#define pb push_back
#define F first
#define S second
#define y0 jahdakdh
#define y1 jahsadakdakdh
#define endl '\n'
const ll MOD=1e9+7;
const ll mod=(1ll<<31)-1;
const ld eps=1e-8;
using namespace std;
mt19937 rng(std::chrono::system_clock::now().time_since_epoch().count());

int n, m, cnt[20005];
vector<int>g[2005];
bool used[2005];

int main()
{
    SPEED;
    cin>>n>>m;
    for(int i=1; i<=n; i++)
        cin>>cnt[i];
    for(int i=0; i<m; i++)
    {
        int u, v;
        cin>>u>>v;
        g[u].pb(v);
        g[v].pb(u);
    }
    for(int i=1; i<=n; i++)
    {
        int cur=cnt[i];
        multiset<pii>s;
        bool pos=1;
        memset(used, 0, sizeof(used));
        for(int u : g[i])
            s.insert({cnt[u], u});
        used[i]=1;
        while(s.size())
        {
            int q=(*s.begin()).S; s.erase(s.begin());
           // cout<<q<<' '<<cnt[q]<<' '<<cur<<endl;
            if(used[q]) continue;
            if(cnt[q]>cur)
            {
                break;
            }
            used[q]=1;
            cur+=cnt[q];
            for(int u : g[q])
            {
            //    cout<<"push  "<<q<<' '<<u<<' '<<cnt[u]<<endl;
                if(!used[u]) s.insert({cnt[u], u});
            }
        }
        for(int i=1; i<=n; i++)
            if(!used[i]) pos=0;
        cout<<pos;
    }
    return 0;
}

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