Submission #564784

#	Time	Username	Problem	Language	Result	Execution time	Memory
564784		AbdullahMW	Building Skyscrapers (CEOI19_skyscrapers)	C++14	0 / 100	228 ms	16076 KiB

skyscrapers

#include <bits/stdc++.h>
 
#define all(vec) vec.begin(), vec.end()
#define ll long long
#define db double
#define pb push_back
#define pf push_front
#define newl "\n"
#define fast ios_base::sync_with_stdio(0); cin.tie(0); cout.tie(0);
#define f first
#define s second
#define MOD 1000000007
 
using namespace std;
 
#pragma GCC diagnostic ignored "-Wunused-result"
void setIO(string name = "") {
    ios_base::sync_with_stdio(0); cin.tie(0);
    cout << fixed << setprecision(15);
    if (name.size()) {
        freopen((name+".in").c_str(), "r", stdin);
        freopen((name+".out").c_str(), "w", stdout);
    }
}
 
map <pair <ll, ll>, bool> vis, exist;
priority_queue <pair <ll, ll>> pq;
void bfs(ll i, ll j)
{
    pq.push({i, j});
    vis[{i, j}] = true;
    while (pq.size())
    {
        ll x = pq.top().f, y = pq.top().s;
        pq.pop();
        
        if (exist[{x + 1, y}] && !vis[{x + 1, y}]) 
        {
            pq.push({x + 1, y});
            vis[{x + 1, y}] = true;
        }
        if (exist[{x - 1, y}] && !vis[{x - 1, y}]) 
        {
            pq.push({x - 1, y});
            vis[{x - 1, y}] = true;
        }
        if (exist[{x, y + 1}] && !vis[{x, y + 1}]) 
        {
            pq.push({x, y + 1});
            vis[{x, y + 1}] = true;
        }
        if (exist[{x, y - 1}] && !vis[{x, y - 1}]) 
        {
            pq.push({x, y - 1});
            vis[{x, y - 1}] = true;
        }
        if (exist[{x + 1, y + 1}] && !vis[{x + 1, y + 1}]) 
        {
            pq.push({x + 1, y + 1});
            vis[{x + 1, y + 1}] = true;
        }
        if (exist[{x + 1, y - 1}] && !vis[{x + 1, y - 1}]) 
        {
            pq.push({x + 1, y - 1});
            vis[{x + 1, y - 1}] = true;
        }
        if (exist[{x - 1, y + 1}] && !vis[{x - 1, y + 1}]) 
        {
            pq.push({x - 1, y + 1});
            vis[{x - 1, y + 1}] = true;
        }
        if (exist[{x - 1, y - 1}] && !vis[{x - 1, y - 1}]) 
        {
            pq.push({x - 1, y - 1});
            vis[{x - 1, y - 1}] = true;
        }
        
    }
}
 
int main()
{
    //fast
    //setIO("");
    
    //freopen("filename.in", "r", stdin);
    //freopen("filename.out", "w", stdout);
    
    ll n, t; cin >> n >> t;
    vector <pair <ll, ll>> a(n);
    map <pair <ll, ll>, ll> mp;
    for (ll i = 0; i < n; i++) 
    {
        cin >> a[i].f >> a[i].s;
        mp[a[i]] = i + 1;
        exist[a[i]] = true;
    }
    
    sort(a.rbegin(), a.rend());
    bfs(a[0].f, a[0].s);

    for (auto v : a) 
    {
        if (!vis[v])
        {
            cout << "NO";
            return 0;
        }
    }
    
    cout << "YES" << newl;
    for (auto v : a) cout << mp[v] << newl;
    
    //cout << 1;
 
 
 
    
    
    
}

• Subtask 1: 0 / 8
• Subtask 2: 0 / 14
• Subtask 3: 0 / 12
• Subtask 4: 0 / 17
• Subtask 5: 0 / 20
• Subtask 6: 0 / 10
• Subtask 7: 0 / 19