Submission #944006

#	Time	Username	Problem	Language	Result	Execution time	Memory
944006		vjudge1	Building Skyscrapers (CEOI19_skyscrapers)	C++17	54 / 100	514 ms	52040 KiB

skyscrapers

#include <bits/stdc++.h>
#define int long long
#define ff first
#define ss second
#define pb push_back
#define all(x) x.begin(),x.end()
using namespace std;
signed main(){
    ios_base::sync_with_stdio();
    cin.tie(0);cout.tie(0);
    int n,t;
    cin>>n>>t;
    vector <int> x(n),y(n);
    map <pair <int,int> ,int> mp,ind;
    for(int i=0;i<n;i++){
        cin>>x[i]>>y[i];
        mp[{x[i],y[i]}]=1;
        ind[{x[i],y[i]}]=i+1;
    }
    int X=mp.begin()->ff.ff;
    int Y=mp.begin()->ff.ss;
    set <pair <int,int> > st;
    vector <int> v={-1,0,1};
    st.insert({X,Y});
    mp[{X,Y}]=2;
    vector <int> ans;
    while(!st.empty()){
        int X=st.begin()->ff;
        int Y=st.begin()->ss;
        st.erase(st.begin());
        ans.pb(ind[{X,Y}]);
        for(auto a : v){
            for(auto b : v){
                if(mp[{X+a,Y+b}]==1){
                    mp[{X+a,Y+b}]=2;
                    st.insert({X+a,Y+b});
                }
            }
        }
    }
    bool ok=1;
    for(int i=0;i<n;i++){
        if(mp[{x[i],y[i]}]==1){
            ok=0;break;
        }
    }
    if(ok){
        cout<<"YES\n";
        for(auto x : ans)cout<<x<<" ";
        cout<<"\n";
    }
    else cout<<"NO\n";
}
/*
 
 */

• 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