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Submission #564557

# Submission time Handle Problem Language Result Execution time Memory
564557 2022-05-19T11:02:24 Z Uzouf Building Skyscrapers (CEOI19_skyscrapers) C++14
0 / 100
 290 ms 21076 KB 
#include <bits/stdc++.h>
#include <ext/pb_ds/assoc_container.hpp>
#include <ext/pb_ds/tree_policy.hpp>
using namespace std;
using namespace __gnu_pbds;
#define int long long
#define endl "\n"
int mod=1e9+7;
const int N=2e5+5;
template<class x>
using ordered_multiset = tree<x, null_type,less_equal<x>, rb_tree_tag,tree_order_statistics_node_update>;

int n,t;
map<pair<int,int>,bool> mp;
map<pair<int,int>,bool> vis;
map<pair<int,int>,int> plc;
vector<pair<int,int> > v;
vector<pair<int,int> > vv;

int dx[8]={0,0,1,-1,1,-1,-1,1};
int dy[8]={1,-1,0,0,1,-1,1,-1};

signed main()
{
    ios_base::sync_with_stdio(0); cin.tie(0); cout.tie(0);
    //freopen(".in", "r", stdin); freopen(".out", "w", stdout);

    cin>>n>>t;
    for (int i=0;i<n;i++) {
      int x,y; cin>>x>>y;
      mp[{x,y}]=true;
      plc[{x,y}]=i+1;
      v.push_back({x,y});
      vv.push_back({y,x});
    }
    sort(v.begin(),v.end());

    priority_queue<pair<int,pair<int,int> >,vector<pair<int,pair<int,int> > >,greater<pair<int,pair<int,int> > > > q;

    int fx=v[0].first,fy=v[0].second;
    int lx=v[n-1].first,ly=v[n-1].second;
    vector<pair<int,pair<int,int> > > borders;
    for (auto i:v) {
      if (i.first==fx && !vis[i]) {
        borders.push_back({plc[i],i});
      }
      if (i.second==fy && !vis[i]) {
        borders.push_back({plc[i],i});
      }
      if (i.first==lx && !vis[i]) {
        borders.push_back({plc[i],i});
      }
      if (i.second==ly && !vis[i]) {
        borders.push_back({plc[i],i});
      }
    }

    sort(borders.begin(),borders.end());
    q.push(borders[0]); vis[borders[0].second]=true;

    vector<int> ans;

    while (!q.empty()) {
      int pp=q.top().first,x=q.top().second.first,y=q.top().second.second;
      q.pop();
      ans.push_back(pp);

      for (int i=0;i<8;i++) {
        int xx=x+dx[i],yy=y+dy[i];
        if (!vis[{xx,yy}] && mp[{xx,yy}]) {
          q.push({plc[{xx,yy}],{xx,yy}}); vis[{xx,yy}]=true;
        }

      }
    }

    for (auto i:v) {
      if (!vis[i]) {
        cout<<"NO"; return 0;
      }
    }

    cout<<"YES"<<endl;
    for (int i:ans) cout<<i<<endl;

}

Subtask #1
0 / 8.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 212 KB ans=YES N=1
2 Correct 1 ms 212 KB ans=YES N=4
3 Correct 1 ms 212 KB ans=NO N=4
4 Correct 0 ms 212 KB ans=YES N=5
5 Correct 0 ms 212 KB ans=YES N=9
6 Correct 0 ms 212 KB ans=YES N=5
7 Correct 0 ms 212 KB ans=NO N=9
8 Correct 0 ms 212 KB ans=NO N=10
9 Correct 0 ms 212 KB ans=YES N=10
10 Incorrect 0 ms 212 KB Added cell 8 (2,0) not reachable from infinity
11 Halted 0 ms 0 KB -

Subtask #2
0 / 14.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 212 KB ans=YES N=1
2 Correct 1 ms 212 KB ans=YES N=4
3 Correct 1 ms 212 KB ans=NO N=4
4 Correct 0 ms 212 KB ans=YES N=5
5 Correct 0 ms 212 KB ans=YES N=9
6 Correct 0 ms 212 KB ans=YES N=5
7 Correct 0 ms 212 KB ans=NO N=9
8 Correct 0 ms 212 KB ans=NO N=10
9 Correct 0 ms 212 KB ans=YES N=10
10 Incorrect 0 ms 212 KB Added cell 8 (2,0) not reachable from infinity
11 Halted 0 ms 0 KB -

Subtask #3
0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 212 KB ans=YES N=1
2 Correct 1 ms 212 KB ans=YES N=4
3 Correct 1 ms 212 KB ans=NO N=4
4 Correct 0 ms 212 KB ans=YES N=5
5 Correct 0 ms 212 KB ans=YES N=9
6 Correct 0 ms 212 KB ans=YES N=5
7 Correct 0 ms 212 KB ans=NO N=9
8 Correct 0 ms 212 KB ans=NO N=10
9 Correct 0 ms 212 KB ans=YES N=10
10 Incorrect 0 ms 212 KB Added cell 8 (2,0) not reachable from infinity
11 Halted 0 ms 0 KB -

Subtask #4
0 / 17.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 596 KB ans=NO N=1934
2 Correct 2 ms 596 KB ans=NO N=1965
3 Incorrect 4 ms 784 KB Added cell 1824 (370,234) not reachable from infinity
4 Halted 0 ms 0 KB -

Subtask #5
0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 212 KB ans=YES N=1
2 Correct 1 ms 212 KB ans=YES N=4
3 Correct 1 ms 212 KB ans=NO N=4
4 Correct 0 ms 212 KB ans=YES N=5
5 Correct 0 ms 212 KB ans=YES N=9
6 Correct 0 ms 212 KB ans=YES N=5
7 Correct 0 ms 212 KB ans=NO N=9
8 Correct 0 ms 212 KB ans=NO N=10
9 Correct 0 ms 212 KB ans=YES N=10
10 Incorrect 0 ms 212 KB Added cell 8 (2,0) not reachable from infinity
11 Halted 0 ms 0 KB -

Subtask #6
0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 290 ms 21076 KB ans=NO N=66151
2 Correct 88 ms 10348 KB ans=NO N=64333
3 Incorrect 211 ms 18180 KB Added cell 69316 (-22,-94) not reachable from infinity
4 Halted 0 ms 0 KB -

Subtask #7
0 / 19.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 596 KB ans=NO N=1934
2 Correct 2 ms 596 KB ans=NO N=1965
3 Incorrect 4 ms 784 KB Added cell 1824 (370,234) not reachable from infinity
4 Halted 0 ms 0 KB -