Submission #974773

#	Time	Username	Problem	Language	Result	Execution time	Memory
974773		p4r4d0_x	Stranded Far From Home (BOI22_island)	C++14	0 / 100	1027 ms	524288 KiB

island

#define _USE_MATH_DEFINES
#include <bits/stdc++.h>
#include <ext/pb_ds/assoc_container.hpp>
#include <ext/pb_ds/tree_policy.hpp>
#define PUT(a, b) freopen(a, "r", stdin); freopen(b, "w", stdout);
#define all(a) a.begin(), a.end()
#define answerNO {cout << "No" << endl; return;}
#define answerYES {cout << "Yes" << endl; return;}
using namespace std;
//#define int long long
#define ff first
#define ss second
#define pb push_back
#define replr(i, a, b) for (int i = int(a); i <= int(b); ++i)
#define reprl(i, a, b) for (int i = int(a); i >= int(b); --i)
#define rep(i, n) for (int i = 0; i < int(n); ++i)
#define mkp(a, b) make_pair(a, b)
typedef long long ll;
typedef long double ld;
typedef pair<int, int> PII;
typedef vector<int> VI;
typedef vector<PII> VPI;
typedef pair<ll, ll> PLL;
typedef vector<ll> VL;
typedef vector<PLL> VPL;
template<class T> T setmax(T& a, T b) {if (a < b) return a = b; return a;}
template<class T> T setmin(T& a, T b) {if (a < b) return a; return a = b;}
using namespace __gnu_pbds;
#define ordered_set tree<int, null_type,less<int>, rb_tree_tag,tree_order_statistics_node_update>
ll mod = 1e9+7;

vector<vector<ll>> gp;
vector<ll> a;
vector<ll> dist;
vector<ll> ans; 
vector<ll> par;
vector<ll> sbtr;
vector<ll> vis;


void sub(ll node, ll p = -1){
    sbtr[node] = a[node];
    for(auto v : gp[node]) if(v != p){
        sub(v, node);
        sbtr[node] += sbtr[v];
    }
}


void dfs1(ll u, ll p = -1){
    if(ans[u] == 0){
        for(auto v : gp[u]) if(v != p){
            ans[v] = 0;
        }
    }
}

void dfs(ll u, ll p = -1){
    if(p == -1){
        dist[u] = 0;
        par[u] = -1;
    }
    for(auto v : gp[u]) if(v != p){
        par[v] = u;
        dist[v] = dist[u] + 1;
    }
    
}



inline void solve(){
    ll n, m; cin >> n >> m;
    gp.resize(n);
    a.resize(n);
    vis.resize(n);
    sbtr.resize(n);
    dist.resize(n);
    par.resize(n);
    ans.resize(n, -1);
    rep(i, n){
        cin >> a[i];
    }
    rep(i, m){
        ll u, v; cin >> u >> v;
        --u, --v;
        gp[u].pb(v);
        gp[v].pb(u);
    }

    dfs(0, -1);
    sub(0, -1);

    rep(i, n){
        if(sbtr[par[i]] > sbtr[i]){
            ans[i] = 0;
        }
        else{
            ans[i] = 1;
        }
    }

    ans[0] = 1;
    dfs1(0, -1);
    for(auto x : ans){
        cout << x << " ";
    }
}
 
 
 
   
signed main() {
    ios_base::sync_with_stdio(false);
    cin.tie(NULL), cout.tie(NULL);
    //PUT(".in", ".out");
    int t = 1;
    //cin >> t;
    while(t--){
        solve();
    }
}

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