oj.uz

Submission #796556

# Submission time Handle Problem Language Result Execution time Memory
796556 2023-07-28T13:53:12 Z Khizri Fountain Parks (IOI21_parks) C++17
15 / 100
 787 ms 57452 KB 
#include "parks.h"
#include <bits/stdc++.h>
using namespace std;
#define ll long long
#define pb push_back
#define F first
#define S second
#define INF 1e18
#define all(v) (v).begin(),(v).end()
#define rall(v) (v).rbegin(),(v).rend()
#define pii pair<int,int>
#define pll pair<ll,ll>
#define OK cout<<"Ok"<<endl;
#define MOD (ll)(1e9+7)
const int mxn=2e5+5;
int n,x[mxn],y[mxn],p[mxn],sz[mxn];
int ax[4]={1,1,-1,-1};
int ay[4]={-1,1,1,-1};
vector<pair<pii,int>>vt;
map<pii,int>mp;
vector<int>adj[mxn];
int fnd(int u){
    if(p[u]==u) return u;
    return p[u]=fnd(p[u]);
}
void Union(int u,int v){
    u=fnd(u);
    v=fnd(v);
    if(u!=v){
        if(sz[u]>sz[v]) swap(u,v);
        sz[u]+=sz[v];
        p[v]=u;
    }
}
bool cmp(pair<pii,int> a,pair<pii,int> b){
    return a.F.S<b.F.S;
}
int construct_roads(vector<int> xx, vector<int> yy) {
    n=xx.size();
    if(n==1){
        build({},{},{},{});
        return 1;
    }
    for(int i=0;i<n;i++){
        vt.pb({{xx[i],yy[i]},i+1});
        mp[{xx[i],yy[i]}]=i+1;
        x[i+1]=xx[i];
        y[i+1]=yy[i];
    }
    set<pii>st;
    for(int i=1;i<=n;i++){
        p[i]=i;
        sz[i]=1;
    }
    vector<int>idxl,idxr,posl,posr;
    sort(all(vt));
    for(int i=1;i<n;i++){
        if(abs(vt[i].F.F-vt[i-1].F.F)+abs(vt[i].F.S-vt[i-1].F.S)==2){
            Union(vt[i-1].S,vt[i].S);
        }
    }
    sort(all(vt),cmp);
    for(int i=1;i<n;i++){
        if(abs(vt[i].F.F-vt[i-1].F.F)+abs(vt[i].F.S-vt[i-1].F.S)==2){
            Union(vt[i-1].S,vt[i].S);
        }
    }
    if(sz[fnd(1)]!=n) return 0;
    for(int i=1;i<=n;i++){
        int l=x[i],r=y[i];
        int node=mp[{l,r}];
        int a=l+2,b=r;
        int c=l,d=r+2;
        int color=((l+r)/2)%2;
        int idx=mp[{a,b}];
        int idx2=mp[{c,d}];
        if(idx){
            int pos1=(l+a)/2,pos2=(r+b)/2;
            if(color){
                pos2++;
            }
            else{
                pos2--;
            }
            if(!st.count({pos1,pos2})){
                idxl.pb(node-1);
                idxr.pb(idx-1);
                posl.pb(pos1);
                posr.pb(pos2);
                st.insert({pos1,pos2});
            }
        }
        if(idx2){
            int pos1=(l+c)/2,pos2=(r+d)/2;
            if(color){
                pos1--;
            }
            else{
                pos1++;
            }
            if(!st.count({pos1,pos2})){
                idxl.pb(node-1);
                idxr.pb(idx2-1);
                posl.pb(pos1);
                posr.pb(pos2);
                st.insert({pos1,pos2});
            }
        }
    }
    build(idxl,idxr,posl,posr);
    return 1;
}
/*
 { g++ parks.cpp grader.cpp } ; if ($?) { .\a.exe }
9
2 2
2 4
2 6
4 2
4 4
4 6
6 2
6 4
6 6
*/

Subtask #1
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 4948 KB Output is correct
2 Correct 3 ms 4920 KB Output is correct
3 Correct 3 ms 4948 KB Output is correct
4 Correct 2 ms 5004 KB Output is correct
5 Correct 2 ms 4948 KB Output is correct
6 Correct 2 ms 4948 KB Output is correct
7 Correct 3 ms 4948 KB Output is correct
8 Correct 2 ms 4948 KB Output is correct
9 Correct 297 ms 34684 KB Output is correct
10 Correct 13 ms 8020 KB Output is correct
11 Correct 77 ms 20940 KB Output is correct
12 Correct 24 ms 9500 KB Output is correct
13 Correct 24 ms 10392 KB Output is correct
14 Correct 3 ms 5140 KB Output is correct
15 Correct 3 ms 5204 KB Output is correct
16 Correct 272 ms 34728 KB Output is correct

Subtask #2
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 4948 KB Output is correct
2 Correct 3 ms 4920 KB Output is correct
3 Correct 3 ms 4948 KB Output is correct
4 Correct 2 ms 5004 KB Output is correct
5 Correct 2 ms 4948 KB Output is correct
6 Correct 2 ms 4948 KB Output is correct
7 Correct 3 ms 4948 KB Output is correct
8 Correct 2 ms 4948 KB Output is correct
9 Correct 297 ms 34684 KB Output is correct
10 Correct 13 ms 8020 KB Output is correct
11 Correct 77 ms 20940 KB Output is correct
12 Correct 24 ms 9500 KB Output is correct
13 Correct 24 ms 10392 KB Output is correct
14 Correct 3 ms 5140 KB Output is correct
15 Correct 3 ms 5204 KB Output is correct
16 Correct 272 ms 34728 KB Output is correct
17 Correct 3 ms 4948 KB Output is correct
18 Correct 3 ms 5008 KB Output is correct
19 Correct 3 ms 5016 KB Output is correct
20 Correct 3 ms 4948 KB Output is correct
21 Correct 3 ms 5008 KB Output is correct
22 Correct 2 ms 5012 KB Output is correct
23 Correct 756 ms 56976 KB Output is correct
24 Correct 2 ms 5004 KB Output is correct
25 Correct 4 ms 5332 KB Output is correct
26 Correct 4 ms 5312 KB Output is correct
27 Correct 5 ms 5460 KB Output is correct
28 Correct 188 ms 25700 KB Output is correct
29 Correct 383 ms 36172 KB Output is correct
30 Correct 567 ms 46904 KB Output is correct
31 Correct 787 ms 57084 KB Output is correct
32 Correct 3 ms 4948 KB Output is correct
33 Correct 3 ms 4948 KB Output is correct
34 Correct 4 ms 5012 KB Output is correct
35 Correct 3 ms 5004 KB Output is correct
36 Correct 3 ms 4948 KB Output is correct
37 Correct 3 ms 4948 KB Output is correct
38 Correct 3 ms 4948 KB Output is correct
39 Correct 4 ms 4948 KB Output is correct
40 Correct 3 ms 5008 KB Output is correct
41 Correct 3 ms 4948 KB Output is correct
42 Correct 3 ms 4948 KB Output is correct
43 Correct 3 ms 5204 KB Output is correct
44 Correct 4 ms 5332 KB Output is correct
45 Correct 358 ms 32504 KB Output is correct
46 Correct 547 ms 45304 KB Output is correct
47 Correct 465 ms 45260 KB Output is correct

Subtask #3
0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 4948 KB Output is correct
2 Correct 3 ms 4920 KB Output is correct
3 Correct 3 ms 4948 KB Output is correct
4 Correct 2 ms 5004 KB Output is correct
5 Correct 2 ms 4948 KB Output is correct
6 Correct 2 ms 4948 KB Output is correct
7 Correct 3 ms 4948 KB Output is correct
8 Correct 2 ms 4948 KB Output is correct
9 Correct 297 ms 34684 KB Output is correct
10 Correct 13 ms 8020 KB Output is correct
11 Correct 77 ms 20940 KB Output is correct
12 Correct 24 ms 9500 KB Output is correct
13 Correct 24 ms 10392 KB Output is correct
14 Correct 3 ms 5140 KB Output is correct
15 Correct 3 ms 5204 KB Output is correct
16 Correct 272 ms 34728 KB Output is correct
17 Correct 3 ms 4948 KB Output is correct
18 Correct 3 ms 5008 KB Output is correct
19 Correct 3 ms 5016 KB Output is correct
20 Correct 3 ms 4948 KB Output is correct
21 Correct 3 ms 5008 KB Output is correct
22 Correct 2 ms 5012 KB Output is correct
23 Correct 756 ms 56976 KB Output is correct
24 Correct 2 ms 5004 KB Output is correct
25 Correct 4 ms 5332 KB Output is correct
26 Correct 4 ms 5312 KB Output is correct
27 Correct 5 ms 5460 KB Output is correct
28 Correct 188 ms 25700 KB Output is correct
29 Correct 383 ms 36172 KB Output is correct
30 Correct 567 ms 46904 KB Output is correct
31 Correct 787 ms 57084 KB Output is correct
32 Correct 3 ms 4948 KB Output is correct
33 Correct 3 ms 4948 KB Output is correct
34 Correct 4 ms 5012 KB Output is correct
35 Correct 3 ms 5004 KB Output is correct
36 Correct 3 ms 4948 KB Output is correct
37 Correct 3 ms 4948 KB Output is correct
38 Correct 3 ms 4948 KB Output is correct
39 Correct 4 ms 4948 KB Output is correct
40 Correct 3 ms 5008 KB Output is correct
41 Correct 3 ms 4948 KB Output is correct
42 Correct 3 ms 4948 KB Output is correct
43 Correct 3 ms 5204 KB Output is correct
44 Correct 4 ms 5332 KB Output is correct
45 Correct 358 ms 32504 KB Output is correct
46 Correct 547 ms 45304 KB Output is correct
47 Correct 465 ms 45260 KB Output is correct
48 Correct 3 ms 4948 KB Output is correct
49 Correct 3 ms 5004 KB Output is correct
50 Correct 3 ms 5008 KB Output is correct
51 Correct 4 ms 4948 KB Output is correct
52 Correct 3 ms 4948 KB Output is correct
53 Correct 3 ms 4948 KB Output is correct
54 Correct 2 ms 4948 KB Output is correct
55 Incorrect 676 ms 54380 KB Given structure is not connected: There is no path between vertices 0 and 30121
56 Halted 0 ms 0 KB -

Subtask #4
0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 4948 KB Output is correct
2 Correct 3 ms 4920 KB Output is correct
3 Correct 3 ms 4948 KB Output is correct
4 Correct 2 ms 5004 KB Output is correct
5 Correct 2 ms 4948 KB Output is correct
6 Correct 2 ms 4948 KB Output is correct
7 Correct 3 ms 4948 KB Output is correct
8 Correct 2 ms 4948 KB Output is correct
9 Correct 297 ms 34684 KB Output is correct
10 Correct 13 ms 8020 KB Output is correct
11 Correct 77 ms 20940 KB Output is correct
12 Correct 24 ms 9500 KB Output is correct
13 Correct 24 ms 10392 KB Output is correct
14 Correct 3 ms 5140 KB Output is correct
15 Correct 3 ms 5204 KB Output is correct
16 Correct 272 ms 34728 KB Output is correct
17 Correct 2 ms 4948 KB Output is correct
18 Correct 2 ms 4948 KB Output is correct
19 Correct 2 ms 4948 KB Output is correct
20 Correct 581 ms 57452 KB Output is correct
21 Incorrect 161 ms 28412 KB Solution announced impossible, but it is possible.
22 Halted 0 ms 0 KB -

Subtask #5
0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 4948 KB Output is correct
2 Correct 3 ms 4920 KB Output is correct
3 Correct 3 ms 4948 KB Output is correct
4 Correct 2 ms 5004 KB Output is correct
5 Correct 2 ms 4948 KB Output is correct
6 Correct 2 ms 4948 KB Output is correct
7 Correct 3 ms 4948 KB Output is correct
8 Correct 2 ms 4948 KB Output is correct
9 Correct 297 ms 34684 KB Output is correct
10 Correct 13 ms 8020 KB Output is correct
11 Correct 77 ms 20940 KB Output is correct
12 Correct 24 ms 9500 KB Output is correct
13 Correct 24 ms 10392 KB Output is correct
14 Correct 3 ms 5140 KB Output is correct
15 Correct 3 ms 5204 KB Output is correct
16 Correct 272 ms 34728 KB Output is correct
17 Incorrect 168 ms 27920 KB Solution announced impossible, but it is possible.
18 Halted 0 ms 0 KB -

Subtask #6
0 / 30.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 4948 KB Output is correct
2 Correct 3 ms 4920 KB Output is correct
3 Correct 3 ms 4948 KB Output is correct
4 Correct 2 ms 5004 KB Output is correct
5 Correct 2 ms 4948 KB Output is correct
6 Correct 2 ms 4948 KB Output is correct
7 Correct 3 ms 4948 KB Output is correct
8 Correct 2 ms 4948 KB Output is correct
9 Correct 297 ms 34684 KB Output is correct
10 Correct 13 ms 8020 KB Output is correct
11 Correct 77 ms 20940 KB Output is correct
12 Correct 24 ms 9500 KB Output is correct
13 Correct 24 ms 10392 KB Output is correct
14 Correct 3 ms 5140 KB Output is correct
15 Correct 3 ms 5204 KB Output is correct
16 Correct 272 ms 34728 KB Output is correct
17 Correct 3 ms 4948 KB Output is correct
18 Correct 3 ms 5008 KB Output is correct
19 Correct 3 ms 5016 KB Output is correct
20 Correct 3 ms 4948 KB Output is correct
21 Correct 3 ms 5008 KB Output is correct
22 Correct 2 ms 5012 KB Output is correct
23 Correct 756 ms 56976 KB Output is correct
24 Correct 2 ms 5004 KB Output is correct
25 Correct 4 ms 5332 KB Output is correct
26 Correct 4 ms 5312 KB Output is correct
27 Correct 5 ms 5460 KB Output is correct
28 Correct 188 ms 25700 KB Output is correct
29 Correct 383 ms 36172 KB Output is correct
30 Correct 567 ms 46904 KB Output is correct
31 Correct 787 ms 57084 KB Output is correct
32 Correct 3 ms 4948 KB Output is correct
33 Correct 3 ms 4948 KB Output is correct
34 Correct 4 ms 5012 KB Output is correct
35 Correct 3 ms 5004 KB Output is correct
36 Correct 3 ms 4948 KB Output is correct
37 Correct 3 ms 4948 KB Output is correct
38 Correct 3 ms 4948 KB Output is correct
39 Correct 4 ms 4948 KB Output is correct
40 Correct 3 ms 5008 KB Output is correct
41 Correct 3 ms 4948 KB Output is correct
42 Correct 3 ms 4948 KB Output is correct
43 Correct 3 ms 5204 KB Output is correct
44 Correct 4 ms 5332 KB Output is correct
45 Correct 358 ms 32504 KB Output is correct
46 Correct 547 ms 45304 KB Output is correct
47 Correct 465 ms 45260 KB Output is correct
48 Correct 3 ms 4948 KB Output is correct
49 Correct 3 ms 5004 KB Output is correct
50 Correct 3 ms 5008 KB Output is correct
51 Correct 4 ms 4948 KB Output is correct
52 Correct 3 ms 4948 KB Output is correct
53 Correct 3 ms 4948 KB Output is correct
54 Correct 2 ms 4948 KB Output is correct
55 Incorrect 676 ms 54380 KB Given structure is not connected: There is no path between vertices 0 and 30121
56 Halted 0 ms 0 KB -