Submission #1089029

#	Time	Username	Problem	Language	Result	Execution time	Memory
1089029		LilPluton	Building Skyscrapers (CEOI19_skyscrapers)	C++14	54 / 100	563 ms	53500 KiB

skyscrapers

#include <bits/stdc++.h>
using namespace std;
#define int ll 
#define ll long long
const int inf = 1e9 + 7;
int dx[] = {1, -1, 0, 0};
int dy[] = {0, 0, 1, -1};
const int sz = 2e5 + 5;


vector<int>moves = {-1, 0, 1};

signed main(){
    int n, t;
    cin >> n >> t;
    vector<pair<int,int>> a(n);
    vector<pair<pair<int,int>, int>>v;
    map<pair<int,int>, int> ind, mp;
    for(int i = 0; i < n; ++i){
        cin >> a[i].first >> a[i].second;
        v.push_back({{a[i].first, a[i].second}, i + 1}); 
        mp[{a[i].first, a[i].second}] = 1;
        ind[{a[i].first, a[i].second}] = i + 1;
    }
    int x = begin(mp) -> first.first;
    int y = begin(mp) -> first.second;
    set<pair<int,int>> st;
    st.insert({x, y});
    mp[{x, y}] = 2;
    vector<int>res;
    while(!st.empty()){
        int x = begin(st)->first;
        int y = begin(st)->second;
        st.erase(begin(st));
        res.push_back(ind[{x, y}]);
        for(auto v1 : moves){
            for(auto v2 : moves){
                if(mp[{x + v1, y + v2}] == 1){
                    mp[{x + v1, y + v2}] = 2;
                    st.insert({x + v1, y + v2});
                }
            }
        }
    }
    bool ok = true;
    for(int i = 0; i < n; ++i){
        if(mp[{a[i].first, a[i].second}] == 1){
            ok = false;
        }
    }
    if(!ok){
        cout << "NO" << endl;
        return 0;
    }
    cout << "YES" << endl;
    for(auto &i : res){
        cout << i << endl;
    }
    
}

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