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Submission #755307

# Submission time Handle Problem Language Result Execution time Memory
755307 2023-06-09T17:58:09 Z Rafi22 Fountain Parks (IOI21_parks) C++17
55 / 100
 1370 ms 164072 KB 
#include <bits/stdc++.h>
#include "parks.h"

using namespace std;

#define endl '\n'
#define st first
#define nd second
#define pb push_back
#define sz(x) (int)(x).size()
#define all(x) (x).begin(), (x).end()
#define ll long long
ll mod=1000000007;
int inf=1000000007;
ll infl=1000000000000000007;

const int N=200007;
map<int,int>id[N];
map<int,int>id1[N];
vector<int>G[3*N];
bool odw[3*N];
int Pair[3*N];

int r[N];

int Find(int v)
{
    if(r[v]==v) return v;
    return r[v]=Find(r[v]);
}
void Union(int u,int v)
{
    r[u]=v;
}

int dx[4]={2,-2,0,0};
int dy[4]={0,0,2,-2};

void edge(int u,int v)
{
    G[u].pb(v);
    G[v].pb(u);
}

bool match(int v)
{
    if(odw[v]) return 0;
    odw[v]=1;
    for(auto u:G[v])
    {
        if(!Pair[u]&&!odw[u])
        {
            Pair[u]=v;
            Pair[v]=u;
            return 1;
        }
    }
    for(auto u:G[v])
    {
        if(!odw[u]&&match(Pair[u]))
        {
            Pair[u]=v;
            Pair[v]=u;
            return 1;
        }
    }
    return 0;
}
/*
void build(vector<int>u,vector<int>v,vector<int>a,vector<int>b)
{
    for(int i=0;i<sz(u);i++)
    {
        cout<<u[i]<<" "<<v[i]<<" "<<a[i]<<" "<<b[i]<<endl;
    }
}
*/

int construct_roads(vector<int>x,vector<int>y)
{
    int n=sz(x);
    for(int i=0;i<n;i++)
    {
        id[x[i]][y[i]]=i+1;
        r[i+1]=i+1;
    }
    int cnt=0,it=n-1;
    vector<int>U,V,A,B;
    vector<pair<int,int>>Q;
    for(int i=0;i<n;i++)
    {
        for(int j=0;j<4;j++)
        {
            int nx=x[i]+dx[j],ny=y[i]+dy[j];
            if(id[nx][ny]>0&&Find(id[nx][ny])!=Find(i+1))
            {
                cnt++;
                U.pb(id[nx][ny]-1);
                V.pb(i);
                Union(Find(id[nx][ny]),Find(i+1));
                int X=min(x[i],x[id[nx][ny]-1]),Y=min(y[i],y[id[nx][ny]-1]);
                if(x[i]==x[id[nx][ny]-1])
                {
                    if(id1[X+1][Y+1]==0)
                    {
                        id1[X+1][Y+1]=++it;
                        Q.pb({X+1,Y+1});
                    }
                    if(id1[X-1][Y+1]==0)
                    {
                        id1[X-1][Y+1]=++it;
                        Q.pb({X-1,Y+1});
                    }
                    edge(id1[X+1][Y+1],cnt);
                    edge(id1[X-1][Y+1],cnt);
                }
                else
                {
                    if(id1[X+1][Y+1]==0)
                    {
                        id1[X+1][Y+1]=++it;
                        Q.pb({X+1,Y+1});
                    }
                    if(id1[X+1][Y-1]==0)
                    {
                        id1[X+1][Y-1]=++it;
                        Q.pb({X+1,Y-1});
                    }
                    edge(id1[X+1][Y+1],cnt);
                    edge(id1[X+1][Y-1],cnt);
                }
            }
        }

    }
    if(cnt!=n-1) return 0;
    while(true)
    {
        memset(odw,0,sizeof odw);
        bool xd=0;
        for(int i=1;i<=it;i++) if(!Pair[i]) xd|=match(i);
        if(!xd) break;
    }
    for(int i=1;i<=n-1;i++)
    {
        A.pb(Q[Pair[i]-n].st);
        B.pb(Q[Pair[i]-n].nd);
      //  if(Pair[i]==0) return 2137;
    }
    build(U,V,A,B);
    return 1;
}

/*
int main()
{
    construct_roads({2, 2, 4, 4}, {2, 4, 2, 4});
    return 0;
}
*/

Subtask #1
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 16 ms 33740 KB Output is correct
2 Correct 16 ms 33740 KB Output is correct
3 Correct 20 ms 33160 KB Output is correct
4 Correct 18 ms 33696 KB Output is correct
5 Correct 18 ms 33784 KB Output is correct
6 Correct 16 ms 33068 KB Output is correct
7 Correct 16 ms 33080 KB Output is correct
8 Correct 17 ms 33180 KB Output is correct
9 Correct 571 ms 76648 KB Output is correct
10 Correct 39 ms 38088 KB Output is correct
11 Correct 179 ms 56776 KB Output is correct
12 Correct 54 ms 40196 KB Output is correct
13 Correct 121 ms 49688 KB Output is correct
14 Correct 20 ms 33492 KB Output is correct
15 Correct 23 ms 33908 KB Output is correct
16 Correct 553 ms 76596 KB Output is correct

Subtask #2
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 16 ms 33740 KB Output is correct
2 Correct 16 ms 33740 KB Output is correct
3 Correct 20 ms 33160 KB Output is correct
4 Correct 18 ms 33696 KB Output is correct
5 Correct 18 ms 33784 KB Output is correct
6 Correct 16 ms 33068 KB Output is correct
7 Correct 16 ms 33080 KB Output is correct
8 Correct 17 ms 33180 KB Output is correct
9 Correct 571 ms 76648 KB Output is correct
10 Correct 39 ms 38088 KB Output is correct
11 Correct 179 ms 56776 KB Output is correct
12 Correct 54 ms 40196 KB Output is correct
13 Correct 121 ms 49688 KB Output is correct
14 Correct 20 ms 33492 KB Output is correct
15 Correct 23 ms 33908 KB Output is correct
16 Correct 553 ms 76596 KB Output is correct
17 Correct 17 ms 33748 KB Output is correct
18 Correct 17 ms 33736 KB Output is correct
19 Correct 18 ms 33680 KB Output is correct
20 Correct 17 ms 33748 KB Output is correct
21 Correct 19 ms 33104 KB Output is correct
22 Correct 17 ms 33752 KB Output is correct
23 Correct 1315 ms 94992 KB Output is correct
24 Correct 19 ms 33748 KB Output is correct
25 Correct 22 ms 34152 KB Output is correct
26 Correct 25 ms 33876 KB Output is correct
27 Correct 28 ms 34220 KB Output is correct
28 Correct 407 ms 58332 KB Output is correct
29 Correct 769 ms 70636 KB Output is correct
30 Correct 989 ms 82376 KB Output is correct
31 Correct 1370 ms 94948 KB Output is correct
32 Correct 19 ms 33748 KB Output is correct
33 Correct 18 ms 33748 KB Output is correct
34 Correct 16 ms 33748 KB Output is correct
35 Correct 17 ms 33160 KB Output is correct
36 Correct 17 ms 33064 KB Output is correct
37 Correct 17 ms 33696 KB Output is correct
38 Correct 17 ms 33748 KB Output is correct
39 Correct 19 ms 33664 KB Output is correct
40 Correct 18 ms 33776 KB Output is correct
41 Correct 18 ms 33172 KB Output is correct
42 Correct 18 ms 33696 KB Output is correct
43 Correct 22 ms 33704 KB Output is correct
44 Correct 26 ms 34004 KB Output is correct
45 Correct 680 ms 68328 KB Output is correct
46 Correct 943 ms 83628 KB Output is correct
47 Correct 931 ms 83464 KB Output is correct

Subtask #3
0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 16 ms 33740 KB Output is correct
2 Correct 16 ms 33740 KB Output is correct
3 Correct 20 ms 33160 KB Output is correct
4 Correct 18 ms 33696 KB Output is correct
5 Correct 18 ms 33784 KB Output is correct
6 Correct 16 ms 33068 KB Output is correct
7 Correct 16 ms 33080 KB Output is correct
8 Correct 17 ms 33180 KB Output is correct
9 Correct 571 ms 76648 KB Output is correct
10 Correct 39 ms 38088 KB Output is correct
11 Correct 179 ms 56776 KB Output is correct
12 Correct 54 ms 40196 KB Output is correct
13 Correct 121 ms 49688 KB Output is correct
14 Correct 20 ms 33492 KB Output is correct
15 Correct 23 ms 33908 KB Output is correct
16 Correct 553 ms 76596 KB Output is correct
17 Correct 17 ms 33748 KB Output is correct
18 Correct 17 ms 33736 KB Output is correct
19 Correct 18 ms 33680 KB Output is correct
20 Correct 17 ms 33748 KB Output is correct
21 Correct 19 ms 33104 KB Output is correct
22 Correct 17 ms 33752 KB Output is correct
23 Correct 1315 ms 94992 KB Output is correct
24 Correct 19 ms 33748 KB Output is correct
25 Correct 22 ms 34152 KB Output is correct
26 Correct 25 ms 33876 KB Output is correct
27 Correct 28 ms 34220 KB Output is correct
28 Correct 407 ms 58332 KB Output is correct
29 Correct 769 ms 70636 KB Output is correct
30 Correct 989 ms 82376 KB Output is correct
31 Correct 1370 ms 94948 KB Output is correct
32 Correct 19 ms 33748 KB Output is correct
33 Correct 18 ms 33748 KB Output is correct
34 Correct 16 ms 33748 KB Output is correct
35 Correct 17 ms 33160 KB Output is correct
36 Correct 17 ms 33064 KB Output is correct
37 Correct 17 ms 33696 KB Output is correct
38 Correct 17 ms 33748 KB Output is correct
39 Correct 19 ms 33664 KB Output is correct
40 Correct 18 ms 33776 KB Output is correct
41 Correct 18 ms 33172 KB Output is correct
42 Correct 18 ms 33696 KB Output is correct
43 Correct 22 ms 33704 KB Output is correct
44 Correct 26 ms 34004 KB Output is correct
45 Correct 680 ms 68328 KB Output is correct
46 Correct 943 ms 83628 KB Output is correct
47 Correct 931 ms 83464 KB Output is correct
48 Correct 17 ms 33748 KB Output is correct
49 Correct 17 ms 33748 KB Output is correct
50 Correct 17 ms 33676 KB Output is correct
51 Correct 18 ms 33688 KB Output is correct
52 Correct 17 ms 33640 KB Output is correct
53 Correct 17 ms 33756 KB Output is correct
54 Correct 18 ms 33700 KB Output is correct
55 Runtime error 1242 ms 164072 KB Execution killed with signal 11
56 Halted 0 ms 0 KB -

Subtask #4
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 16 ms 33740 KB Output is correct
2 Correct 16 ms 33740 KB Output is correct
3 Correct 20 ms 33160 KB Output is correct
4 Correct 18 ms 33696 KB Output is correct
5 Correct 18 ms 33784 KB Output is correct
6 Correct 16 ms 33068 KB Output is correct
7 Correct 16 ms 33080 KB Output is correct
8 Correct 17 ms 33180 KB Output is correct
9 Correct 571 ms 76648 KB Output is correct
10 Correct 39 ms 38088 KB Output is correct
11 Correct 179 ms 56776 KB Output is correct
12 Correct 54 ms 40196 KB Output is correct
13 Correct 121 ms 49688 KB Output is correct
14 Correct 20 ms 33492 KB Output is correct
15 Correct 23 ms 33908 KB Output is correct
16 Correct 553 ms 76596 KB Output is correct
17 Correct 17 ms 33748 KB Output is correct
18 Correct 17 ms 33684 KB Output is correct
19 Correct 16 ms 33124 KB Output is correct
20 Correct 744 ms 109252 KB Output is correct
21 Correct 661 ms 101668 KB Output is correct
22 Correct 783 ms 101480 KB Output is correct
23 Correct 652 ms 105920 KB Output is correct
24 Correct 482 ms 65568 KB Output is correct
25 Correct 990 ms 98308 KB Output is correct
26 Correct 886 ms 98388 KB Output is correct
27 Correct 1016 ms 109676 KB Output is correct
28 Correct 1025 ms 109788 KB Output is correct
29 Correct 1095 ms 109688 KB Output is correct
30 Correct 1014 ms 109780 KB Output is correct
31 Correct 17 ms 33748 KB Output is correct
32 Correct 57 ms 38476 KB Output is correct
33 Correct 120 ms 49432 KB Output is correct
34 Correct 596 ms 109432 KB Output is correct
35 Correct 43 ms 35784 KB Output is correct
36 Correct 153 ms 45516 KB Output is correct
37 Correct 345 ms 57528 KB Output is correct
38 Correct 355 ms 57820 KB Output is correct
39 Correct 526 ms 66920 KB Output is correct
40 Correct 688 ms 76316 KB Output is correct
41 Correct 872 ms 84472 KB Output is correct
42 Correct 1042 ms 94008 KB Output is correct
43 Correct 18 ms 33748 KB Output is correct
44 Correct 17 ms 33784 KB Output is correct
45 Correct 17 ms 33748 KB Output is correct
46 Correct 18 ms 33228 KB Output is correct
47 Correct 17 ms 33108 KB Output is correct
48 Correct 18 ms 33740 KB Output is correct
49 Correct 17 ms 33692 KB Output is correct
50 Correct 17 ms 33692 KB Output is correct
51 Correct 16 ms 33748 KB Output is correct
52 Correct 16 ms 33188 KB Output is correct
53 Correct 17 ms 33748 KB Output is correct
54 Correct 22 ms 33712 KB Output is correct
55 Correct 24 ms 34004 KB Output is correct
56 Correct 574 ms 68432 KB Output is correct
57 Correct 949 ms 83504 KB Output is correct
58 Correct 964 ms 83616 KB Output is correct
59 Correct 17 ms 33164 KB Output is correct
60 Correct 18 ms 33696 KB Output is correct
61 Correct 17 ms 33108 KB Output is correct
62 Correct 1265 ms 114464 KB Output is correct
63 Correct 1229 ms 114396 KB Output is correct
64 Correct 1257 ms 114084 KB Output is correct
65 Correct 29 ms 34300 KB Output is correct
66 Correct 40 ms 35352 KB Output is correct
67 Correct 594 ms 66860 KB Output is correct
68 Correct 945 ms 83152 KB Output is correct
69 Correct 1345 ms 99900 KB Output is correct

Subtask #5
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 16 ms 33740 KB Output is correct
2 Correct 16 ms 33740 KB Output is correct
3 Correct 20 ms 33160 KB Output is correct
4 Correct 18 ms 33696 KB Output is correct
5 Correct 18 ms 33784 KB Output is correct
6 Correct 16 ms 33068 KB Output is correct
7 Correct 16 ms 33080 KB Output is correct
8 Correct 17 ms 33180 KB Output is correct
9 Correct 571 ms 76648 KB Output is correct
10 Correct 39 ms 38088 KB Output is correct
11 Correct 179 ms 56776 KB Output is correct
12 Correct 54 ms 40196 KB Output is correct
13 Correct 121 ms 49688 KB Output is correct
14 Correct 20 ms 33492 KB Output is correct
15 Correct 23 ms 33908 KB Output is correct
16 Correct 553 ms 76596 KB Output is correct
17 Correct 887 ms 119024 KB Output is correct
18 Correct 909 ms 119220 KB Output is correct
19 Correct 806 ms 104612 KB Output is correct
20 Correct 1002 ms 88948 KB Output is correct
21 Correct 1014 ms 97656 KB Output is correct
22 Correct 18 ms 33756 KB Output is correct
23 Correct 115 ms 43880 KB Output is correct
24 Correct 59 ms 38040 KB Output is correct
25 Correct 248 ms 49932 KB Output is correct
26 Correct 443 ms 61984 KB Output is correct
27 Correct 418 ms 63460 KB Output is correct
28 Correct 617 ms 70920 KB Output is correct
29 Correct 712 ms 77992 KB Output is correct
30 Correct 900 ms 85488 KB Output is correct
31 Correct 1107 ms 92836 KB Output is correct
32 Correct 1303 ms 100304 KB Output is correct
33 Correct 1275 ms 114544 KB Output is correct
34 Correct 30 ms 34532 KB Output is correct
35 Correct 41 ms 35680 KB Output is correct
36 Correct 606 ms 66676 KB Output is correct
37 Correct 961 ms 82512 KB Output is correct
38 Correct 1340 ms 99364 KB Output is correct

Subtask #6
0 / 30.0

# Verdict Execution time Memory Grader output
1 Correct 16 ms 33740 KB Output is correct
2 Correct 16 ms 33740 KB Output is correct
3 Correct 20 ms 33160 KB Output is correct
4 Correct 18 ms 33696 KB Output is correct
5 Correct 18 ms 33784 KB Output is correct
6 Correct 16 ms 33068 KB Output is correct
7 Correct 16 ms 33080 KB Output is correct
8 Correct 17 ms 33180 KB Output is correct
9 Correct 571 ms 76648 KB Output is correct
10 Correct 39 ms 38088 KB Output is correct
11 Correct 179 ms 56776 KB Output is correct
12 Correct 54 ms 40196 KB Output is correct
13 Correct 121 ms 49688 KB Output is correct
14 Correct 20 ms 33492 KB Output is correct
15 Correct 23 ms 33908 KB Output is correct
16 Correct 553 ms 76596 KB Output is correct
17 Correct 17 ms 33748 KB Output is correct
18 Correct 17 ms 33736 KB Output is correct
19 Correct 18 ms 33680 KB Output is correct
20 Correct 17 ms 33748 KB Output is correct
21 Correct 19 ms 33104 KB Output is correct
22 Correct 17 ms 33752 KB Output is correct
23 Correct 1315 ms 94992 KB Output is correct
24 Correct 19 ms 33748 KB Output is correct
25 Correct 22 ms 34152 KB Output is correct
26 Correct 25 ms 33876 KB Output is correct
27 Correct 28 ms 34220 KB Output is correct
28 Correct 407 ms 58332 KB Output is correct
29 Correct 769 ms 70636 KB Output is correct
30 Correct 989 ms 82376 KB Output is correct
31 Correct 1370 ms 94948 KB Output is correct
32 Correct 19 ms 33748 KB Output is correct
33 Correct 18 ms 33748 KB Output is correct
34 Correct 16 ms 33748 KB Output is correct
35 Correct 17 ms 33160 KB Output is correct
36 Correct 17 ms 33064 KB Output is correct
37 Correct 17 ms 33696 KB Output is correct
38 Correct 17 ms 33748 KB Output is correct
39 Correct 19 ms 33664 KB Output is correct
40 Correct 18 ms 33776 KB Output is correct
41 Correct 18 ms 33172 KB Output is correct
42 Correct 18 ms 33696 KB Output is correct
43 Correct 22 ms 33704 KB Output is correct
44 Correct 26 ms 34004 KB Output is correct
45 Correct 680 ms 68328 KB Output is correct
46 Correct 943 ms 83628 KB Output is correct
47 Correct 931 ms 83464 KB Output is correct
48 Correct 17 ms 33748 KB Output is correct
49 Correct 17 ms 33748 KB Output is correct
50 Correct 17 ms 33676 KB Output is correct
51 Correct 18 ms 33688 KB Output is correct
52 Correct 17 ms 33640 KB Output is correct
53 Correct 17 ms 33756 KB Output is correct
54 Correct 18 ms 33700 KB Output is correct
55 Runtime error 1242 ms 164072 KB Execution killed with signal 11
56 Halted 0 ms 0 KB -