Submission #564513

#	Time	Username	Problem	Language	Result	Execution time	Memory
564513		RealSnake	Building Skyscrapers (CEOI19_skyscrapers)	C++14	0 / 100	37 ms	5452 KiB

skyscrapers

#include "bits/stdc++.h"
using namespace std;

#include <ext/pb_ds/assoc_container.hpp>
#include <ext/pb_ds/tree_policy.hpp>
using namespace __gnu_pbds;
typedef tree<int, null_type, less<int>, rb_tree_tag, tree_order_statistics_node_update> ordered_set;

#define ll long long
#define mod 1000000007

ofstream fout(".out");
ifstream fin(".in");

map<pair<int, int>, int> mp;
int n, t, j;
int a[1500001];
bool vis[1500001];
int xi[8] = {0, 0, 1, 1, 1, -1, -1, -1};
int yi[8] = {-1, 1, -1, 0, -1, -1, 0, -1};

bool check(int x, int y) {
    return x >= 0 && x < n && y >= 0 && y < n;
}

signed main() {

    ios::sync_with_stdio(false);
    cin.tie(NULL);
    cout.tie(NULL);

    cin >> n >> t;
    vector<pair<int, int>> v;
    for(int i = 0; i < n; i++) {
        int x, y;
        cin >> x >> y;
        v.push_back({x, y});
        mp[{x, y}] = i + 1;
    }
    priority_queue<int> pq;
    pq.push(n - 1);
    j = n - 1;
    while(!pq.empty()) {
        int ind = pq.top();
        pq.pop();
        vis[ind] = 1;
        a[j--] = ind;
        int x = v[ind].first, y = v[ind].second;
        for(int i = 0; i < 8; i++) {
            int xx = x + xi[i];
            int yy = y + yi[i];
            if(check(xx, yy) && mp[{xx, yy}] && !vis[mp[{xx, yy}] - 1]) {
                vis[mp[{xx, yy}] - 1] = 1;
                pq.push(mp[{xx, yy}] - 1);
            }
        }
    }
    if(j >= 0) {
        cout << "NO";
        return 0;
    }
    cout << "YES\n";
    for(int i = 0; i < n; i++)
        cout << a[i] + 1 << "\n";

    return 0;
}

• 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