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Submission #1014394

# Submission time Handle Problem Language Result Execution time Memory
1014394 2024-07-04T20:09:21 Z Ahmed_Solyman Connecting Supertrees (IOI20_supertrees) C++14
40 / 100
 173 ms 24288 KB 
/*
In the name of Allah
made by: Ahmed_Solyman
*/
#include <bits/stdc++.h>
#include <ext/rope>

using namespace std;
using namespace __gnu_cxx;
#pragma GCC optimize("-Ofast")
#pragma GCC optimize("-O1")
//-------------------------------------------------------------//
typedef long long ll;
typedef unsigned long long ull;
#define fast ios_base::sync_with_stdio(0);cin.tie(0);cout.tie(0);
#define PI acos(-1)
#define lb lower_bound
#define ub upper_bound
#define all(v) v.begin(),v.end()
#define allr(v) v.rbegin(),v.rend()
#define sum_to(n) (n*(n+1))/2
#define pb push_back
#define pf push_front
#define fil(arr,x) memset(arr,x,sizeof(arr))
#define endl '\n'
const ll mod=1e9+7;
int dx[8]={0,1,0,-1,1,1,-1,-1};
int dy[8]={1,0,-1,0,1,-1,-1,1};
//-------------------------------------------------------------//
ll lcm(ll a,ll b)
{
    return (max(a,b)/__gcd(a,b))*min(a,b);
}
void person_bool(bool x)
{
    cout<<(x?"YES":"NO")<<endl;
}
void build(vector<vector<int>>b);
struct DSU{
    vector<int>P,sz;
    void init(int n){
        P.resize(n+5);
        sz.assign(n+5,1);
        for(int i=0;i<n+5;i++)P[i]=i;
    }
    int find(int node){
        if(P[node]==node)return node;
        return P[node]=find(P[node]);
    }
    bool unite(int a,int b){
        int p1=find(a);
        int p2=find(b);
        if(p1==p2){
            return 0;
        }
        if(sz[p1]>sz[p2]){
            swap(p1,p2);
        }
        P[p1]=p2;
        sz[p2]+=sz[p1];
        return 1;
    }
}d,dsu,dsu2;
int construct(vector<vector<int>> p){
    int n=p.size();
    dsu.init(n);
    dsu2.init(n);
    set<int>s;
    for(int i=0;i<n;i++){
        for(int j=0;j<n;j++){
            s.insert(p[i][j]);
        }
    }
    if((s.size()==2 && s.find(1)!=s.end() && s.find(2)!=s.end()) && s.size()==3){
        for(int i=0;i<n;i++){
            for(int j=0;j<n;j++){
                if(p[i][j]==1)dsu.unite(i,j);
                if(p[i][j]==2)dsu2.unite(i,j);
            }
        }
        for(int i=0;i<n;i++){
            for(int j=0;j<n;j++){
                if(!p[i][j] && (dsu.find(i)==dsu.find(j) || dsu2.find(i)==dsu2.find(j))){
                    return 0;
                }
                if(dsu.find(i)==dsu2.find(i)){
                    return 0;
                }
            }
        }
        vector<int>v[n];
        for(int i=0;i<n;i++)v[dsu.find(i)].push_back(i);
        vector<vector<int>>b(n,vector<int>(n));
        for(int i=0;i<n;i++){
            int m=(int)v[i].size();
            for(int j=1;j<m;j++){
                b[v[i][j-1]][v[i][j]]=1;
                b[v[i][j]][v[i][j-1]]=1;
            }
        }
        for(int i=0;i<n;i++){
            v[i].clear();
        }
        for(int i=0;i<n;i++)v[dsu2.find(i)].push_back(i);
        d=dsu;
        for(int i=0;i<n;i++){
            int m=(int)v[i].size();
            if(m<=1)continue;
            for(int j=1;j<m;j++){
                b[v[i][j-1]][v[i][j]]=1;
                b[v[i][j]][v[i][j-1]]=1;
                dsu.unite(v[i][j-1],v[i][j]);
            }
            if(m==2){
                return 0;
            }
            b[v[i][0]][v[i][m-1]]=1;
            b[v[i][m-1]][v[i][0]]=1;
            dsu.unite(v[i][0],v[i][m-1]);
        }
        for(int i=0;i<n;i++){
            for(int j=0;j<n;j++){
                if(dsu.find(i) == dsu.find(j) && p[i][j]==0){
                    return 0;
                }
                if((dsu.find(i) == dsu.find(j) && d.find(i) != d.find(j)) && p[i][j]==1){
                    return 0;
                }
            }
        }
        build(b);
        return 1;
    }
    for(int i=0;i<n;i++){
        for(int j=0;j<n;j++){
            if(p[i][j])dsu.unite(i,j);
        }
    }
    for(int i=0;i<n;i++){
        for(int j=0;j<n;j++){
            if(!p[i][j] && dsu.find(i)==dsu.find(j)){
                return 0;
            }
        }
    }
    vector<int>v[n];
    for(int i=0;i<n;i++)v[dsu.find(i)].push_back(i);
    vector<vector<int>>b(n,vector<int>(n));
    for(int i=0;i<n;i++){
        bool cyc=1;
        int m=(int)v[i].size();
        for(int j=1;j<m;j++){
            b[v[i][j-1]][v[i][j]]=1;
            b[v[i][j]][v[i][j-1]]=1;
            cyc&=(p[v[i][j]][v[i][j-1]]==2);
        }
        if(cyc){
            if(m>2){
                b[v[i][m-1]][v[i][0]]=1;
                b[v[i][0]][v[i][m-1]]=1;
            }
            else if(m==2){
                return 0;
            }
        }
    }
    build(b);
    return 1;
}

Subtask #1
11.0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 5 ms 1372 KB Output is correct
7 Correct 136 ms 24120 KB Output is correct

Subtask #2
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 5 ms 1372 KB Output is correct
7 Correct 136 ms 24120 KB Output is correct
8 Correct 0 ms 348 KB Output is correct
9 Correct 0 ms 356 KB Output is correct
10 Correct 0 ms 348 KB Output is correct
11 Correct 0 ms 344 KB Output is correct
12 Correct 7 ms 1368 KB Output is correct
13 Correct 111 ms 24120 KB Output is correct
14 Correct 0 ms 348 KB Output is correct
15 Correct 0 ms 348 KB Output is correct
16 Correct 3 ms 604 KB Output is correct
17 Correct 69 ms 10284 KB Output is correct
18 Correct 0 ms 348 KB Output is correct
19 Correct 0 ms 348 KB Output is correct
20 Correct 30 ms 6256 KB Output is correct
21 Correct 167 ms 24148 KB Output is correct
22 Correct 112 ms 24124 KB Output is correct
23 Correct 122 ms 23984 KB Output is correct
24 Correct 116 ms 24072 KB Output is correct
25 Correct 61 ms 10320 KB Output is correct
26 Correct 52 ms 10068 KB Output is correct
27 Correct 120 ms 24148 KB Output is correct
28 Correct 144 ms 24144 KB Output is correct

Subtask #3
19.0 / 19.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 0 ms 348 KB Output is correct
7 Correct 0 ms 344 KB Output is correct
8 Correct 5 ms 1364 KB Output is correct
9 Correct 133 ms 24288 KB Output is correct
10 Correct 0 ms 344 KB Output is correct
11 Correct 0 ms 348 KB Output is correct
12 Correct 5 ms 1360 KB Output is correct
13 Correct 117 ms 24148 KB Output is correct
14 Correct 0 ms 344 KB Output is correct
15 Correct 0 ms 348 KB Output is correct
16 Correct 3 ms 676 KB Output is correct
17 Correct 90 ms 10104 KB Output is correct
18 Correct 0 ms 348 KB Output is correct
19 Correct 0 ms 348 KB Output is correct
20 Correct 0 ms 348 KB Output is correct
21 Correct 30 ms 6236 KB Output is correct
22 Correct 120 ms 24068 KB Output is correct
23 Correct 173 ms 23940 KB Output is correct
24 Correct 115 ms 24144 KB Output is correct
25 Correct 55 ms 14164 KB Output is correct
26 Correct 60 ms 10068 KB Output is correct
27 Correct 118 ms 24144 KB Output is correct
28 Correct 117 ms 23944 KB Output is correct
29 Correct 55 ms 14216 KB Output is correct

Subtask #4
0 / 35.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 0 ms 436 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 31 ms 6304 KB Output is correct
5 Correct 119 ms 24068 KB Output is correct
6 Correct 117 ms 23940 KB Output is correct
7 Correct 129 ms 24144 KB Output is correct
8 Correct 0 ms 348 KB Output is correct
9 Correct 29 ms 6236 KB Output is correct
10 Correct 117 ms 24144 KB Output is correct
11 Correct 123 ms 24068 KB Output is correct
12 Correct 122 ms 24184 KB Output is correct
13 Correct 0 ms 344 KB Output is correct
14 Correct 0 ms 348 KB Output is correct
15 Incorrect 0 ms 348 KB Too many ways to get from 0 to 4, should be 1 found no less than 2
16 Halted 0 ms 0 KB -

Subtask #5
0 / 21.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 5 ms 1372 KB Output is correct
7 Correct 136 ms 24120 KB Output is correct
8 Correct 0 ms 348 KB Output is correct
9 Correct 0 ms 356 KB Output is correct
10 Correct 0 ms 348 KB Output is correct
11 Correct 0 ms 344 KB Output is correct
12 Correct 7 ms 1368 KB Output is correct
13 Correct 111 ms 24120 KB Output is correct
14 Correct 0 ms 348 KB Output is correct
15 Correct 0 ms 348 KB Output is correct
16 Correct 3 ms 604 KB Output is correct
17 Correct 69 ms 10284 KB Output is correct
18 Correct 0 ms 348 KB Output is correct
19 Correct 0 ms 348 KB Output is correct
20 Correct 30 ms 6256 KB Output is correct
21 Correct 167 ms 24148 KB Output is correct
22 Correct 112 ms 24124 KB Output is correct
23 Correct 122 ms 23984 KB Output is correct
24 Correct 116 ms 24072 KB Output is correct
25 Correct 61 ms 10320 KB Output is correct
26 Correct 52 ms 10068 KB Output is correct
27 Correct 120 ms 24148 KB Output is correct
28 Correct 144 ms 24144 KB Output is correct
29 Correct 0 ms 348 KB Output is correct
30 Correct 0 ms 348 KB Output is correct
31 Correct 0 ms 348 KB Output is correct
32 Correct 0 ms 348 KB Output is correct
33 Correct 0 ms 348 KB Output is correct
34 Correct 0 ms 348 KB Output is correct
35 Correct 0 ms 344 KB Output is correct
36 Correct 5 ms 1364 KB Output is correct
37 Correct 133 ms 24288 KB Output is correct
38 Correct 0 ms 344 KB Output is correct
39 Correct 0 ms 348 KB Output is correct
40 Correct 5 ms 1360 KB Output is correct
41 Correct 117 ms 24148 KB Output is correct
42 Correct 0 ms 344 KB Output is correct
43 Correct 0 ms 348 KB Output is correct
44 Correct 3 ms 676 KB Output is correct
45 Correct 90 ms 10104 KB Output is correct
46 Correct 0 ms 348 KB Output is correct
47 Correct 0 ms 348 KB Output is correct
48 Correct 0 ms 348 KB Output is correct
49 Correct 30 ms 6236 KB Output is correct
50 Correct 120 ms 24068 KB Output is correct
51 Correct 173 ms 23940 KB Output is correct
52 Correct 115 ms 24144 KB Output is correct
53 Correct 55 ms 14164 KB Output is correct
54 Correct 60 ms 10068 KB Output is correct
55 Correct 118 ms 24144 KB Output is correct
56 Correct 117 ms 23944 KB Output is correct
57 Correct 55 ms 14216 KB Output is correct
58 Correct 0 ms 348 KB Output is correct
59 Correct 0 ms 436 KB Output is correct
60 Correct 3 ms 604 KB Output is correct
61 Correct 70 ms 10120 KB Output is correct
62 Correct 0 ms 348 KB Output is correct
63 Correct 0 ms 348 KB Output is correct
64 Correct 0 ms 348 KB Output is correct
65 Incorrect 28 ms 6260 KB Too many ways to get from 28 to 464, should be 1 found no less than 2
66 Halted 0 ms 0 KB -

Subtask #6
0 / 4.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 5 ms 1372 KB Output is correct
7 Correct 136 ms 24120 KB Output is correct
8 Correct 0 ms 348 KB Output is correct
9 Correct 0 ms 356 KB Output is correct
10 Correct 0 ms 348 KB Output is correct
11 Correct 0 ms 344 KB Output is correct
12 Correct 7 ms 1368 KB Output is correct
13 Correct 111 ms 24120 KB Output is correct
14 Correct 0 ms 348 KB Output is correct
15 Correct 0 ms 348 KB Output is correct
16 Correct 3 ms 604 KB Output is correct
17 Correct 69 ms 10284 KB Output is correct
18 Correct 0 ms 348 KB Output is correct
19 Correct 0 ms 348 KB Output is correct
20 Correct 30 ms 6256 KB Output is correct
21 Correct 167 ms 24148 KB Output is correct
22 Correct 112 ms 24124 KB Output is correct
23 Correct 122 ms 23984 KB Output is correct
24 Correct 116 ms 24072 KB Output is correct
25 Correct 61 ms 10320 KB Output is correct
26 Correct 52 ms 10068 KB Output is correct
27 Correct 120 ms 24148 KB Output is correct
28 Correct 144 ms 24144 KB Output is correct
29 Correct 0 ms 348 KB Output is correct
30 Correct 0 ms 348 KB Output is correct
31 Correct 0 ms 348 KB Output is correct
32 Correct 0 ms 348 KB Output is correct
33 Correct 0 ms 348 KB Output is correct
34 Correct 0 ms 348 KB Output is correct
35 Correct 0 ms 344 KB Output is correct
36 Correct 5 ms 1364 KB Output is correct
37 Correct 133 ms 24288 KB Output is correct
38 Correct 0 ms 344 KB Output is correct
39 Correct 0 ms 348 KB Output is correct
40 Correct 5 ms 1360 KB Output is correct
41 Correct 117 ms 24148 KB Output is correct
42 Correct 0 ms 344 KB Output is correct
43 Correct 0 ms 348 KB Output is correct
44 Correct 3 ms 676 KB Output is correct
45 Correct 90 ms 10104 KB Output is correct
46 Correct 0 ms 348 KB Output is correct
47 Correct 0 ms 348 KB Output is correct
48 Correct 0 ms 348 KB Output is correct
49 Correct 30 ms 6236 KB Output is correct
50 Correct 120 ms 24068 KB Output is correct
51 Correct 173 ms 23940 KB Output is correct
52 Correct 115 ms 24144 KB Output is correct
53 Correct 55 ms 14164 KB Output is correct
54 Correct 60 ms 10068 KB Output is correct
55 Correct 118 ms 24144 KB Output is correct
56 Correct 117 ms 23944 KB Output is correct
57 Correct 55 ms 14216 KB Output is correct
58 Correct 0 ms 348 KB Output is correct
59 Correct 0 ms 436 KB Output is correct
60 Correct 0 ms 348 KB Output is correct
61 Correct 31 ms 6304 KB Output is correct
62 Correct 119 ms 24068 KB Output is correct
63 Correct 117 ms 23940 KB Output is correct
64 Correct 129 ms 24144 KB Output is correct
65 Correct 0 ms 348 KB Output is correct
66 Correct 29 ms 6236 KB Output is correct
67 Correct 117 ms 24144 KB Output is correct
68 Correct 123 ms 24068 KB Output is correct
69 Correct 122 ms 24184 KB Output is correct
70 Correct 0 ms 344 KB Output is correct
71 Correct 0 ms 348 KB Output is correct
72 Incorrect 0 ms 348 KB Too many ways to get from 0 to 4, should be 1 found no less than 2
73 Halted 0 ms 0 KB -