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Submission #569793

# Submission time Handle Problem Language Result Execution time Memory
569793 2022-05-27T19:59:30 Z definitelynotmee Parachute rings (IOI12_rings) C++
38 / 100
 1093 ms 262144 KB 
#include<bits/stdc++.h>
#define mp make_pair
#define mt make_tuple
#define all(x) x.begin(), x.end()
#define ff first
#define ss second
using namespace std;
template <typename T>
using matrix = vector<vector<T>>;
typedef unsigned int uint;
typedef unsigned long long ull;
typedef long long ll;
typedef pair<int,int> pii;
typedef pair<ll,ll> pll;
const ll INFL = (1LL<<62)-1;
const int INF = (1<<30)-1;
const double EPS = 1e-7;
const int MOD = 1e9 + 7;
const int RANDOM = chrono::high_resolution_clock::now().time_since_epoch().count();
const int MAXN = 1e6+1;

struct UnionFind{
    bool good = 1;
    int root;
    vector<int> pai, degree;

    UnionFind(int n = 0, int start = 0){
        root = start;
        pai = vector<int>(n+1);
        iota(all(pai),0);
        degree = vector<int>(n+1);
    }
    int find (int id){
        if(pai[id] == id)
            return id;
        return pai[id] = find(pai[id]);
    }
    void onion(int a, int b){

        if(a == root || b == root)
            return;
        //cout << root << " push(" << a << ',' << b << ")\n";
        degree[a]++;
        degree[b]++;
        if(degree[a] == 3)
            good = 0;//, cout << "=>" << root << " bad " << a <<  "\n";
        if(degree[b] == 3)
            good = 0;//, cout << "=>" << root << " bad " << b <<  "\n";
        a = find(a), b = find(b);
        if(a!=b){
            pai[b] = a;
        } else {
            good = 0;//, cout << "=>" << root << " badc\n";
        }
    }
};

struct UnionFind2{
    int cycle = -1;
    int cyclect = 0;
    vector<int> pai, sizee;

    UnionFind2(int n = 0){
        pai = vector<int>(n+1);
        sizee = vector<int> (n+1,1);
        iota(all(pai),0);
    }
    int find (int id){
        if(pai[id] == id)
            return id;
        return pai[id] = find(pai[id]);
    }
    void onion(int a, int b){
        a = find(a), b = find(b);
        if(a == b){
            cycle = a;
            cyclect++;
        } else{
            sizee[a] += sizee[b];
            pai[b] = a;
        }
    }
} ufsmall;

int n;

matrix<int> g;
vector<int> cand;
vector<UnionFind> uf;

int mode = 0;
int mode2big;

void inituf(int x, int y){
    if(mode < 2)
    for(int i : g[x]){
        if(cand[i]!=-1)
            continue;
        cand[i] = uf.size();
        uf.push_back(UnionFind(n,i));
        for(int j = 0; j < n; j++){
            for(int k : g[j]){
                if(j > k)
                    continue;
                int a = j , b = k;
                if(!(a == min(x,y) && b == max(x,y)))
                    uf.back().onion(j,k);
            }
        }
    }
    if(cand[x]==-1){
        cand[x] = uf.size();
        uf.push_back(UnionFind(n,x));
        for(int j = 0; j < n; j++){
            for(int k : g[j]){
                if(j > k)
                    continue;
                int a = j , b = k;
                if(!(a == min(x,y) && b == max(x,y)))
                    uf.back().onion(j,k);
            }
        }
    }

}


void Init(int N_) {

  n = N_;
  g = matrix<int>(n+1);
  cand = vector<int>(n+1,-1);
  ufsmall = UnionFind2(n);
}

void Link(int A, int B) {
    if(mode == 3)
        return;
    g[A].push_back(B);
    g[B].push_back(A);
    if(g[A].size() == 4){
        if(mode == 2){
            mode = 3;
            return;
        }else mode2big = A, mode = 2, uf.clear(), fill(all(cand),-1), inituf(A,B);
    }
    if(g[B].size() == 4){
        if(mode == 2){
            mode = 3;
            return;
        }else mode2big = B, mode = 2, uf.clear(), fill(all(cand),-1), inituf(B,A);
    }
    if(g[A].size() == 3 && mode < 2){
        mode = 1;
        inituf(A,B);
    }
    if(g[B].size() == 3 && mode < 2){
        mode = 1;
        inituf(B,A);
    }
    if(mode == 0){
        ufsmall.onion(A,B);
        if(ufsmall.cyclect >= 2)
            mode = 3;
    }
    for(auto& i : uf){
        i.onion(A,B);
    }

}

int CountCritical() {
    if(mode == 3)
        return 0;
    if(mode == 0){
        if(ufsmall.cyclect == 0)
            return n;
        else return ufsmall.sizee[ufsmall.cycle];
    }
    int resp =0;
    for(auto& i : uf){
        //cout << "->" << i.root << ' ' << i.good << '\n';
        resp+=i.good;
    }

    return resp;
}

Subtask #1
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 212 KB Output is correct
2 Correct 3 ms 724 KB Output is correct
3 Correct 2 ms 732 KB Output is correct
4 Correct 1 ms 340 KB Output is correct
5 Correct 1 ms 468 KB Output is correct
6 Correct 2 ms 596 KB Output is correct
7 Correct 2 ms 2004 KB Output is correct
8 Correct 2 ms 592 KB Output is correct
9 Correct 3 ms 852 KB Output is correct
10 Correct 4 ms 980 KB Output is correct

Subtask #2
0 / 17.0

# Verdict Execution time Memory Grader output
1 Correct 408 ms 41712 KB Output is correct
2 Correct 1082 ms 72936 KB Output is correct
3 Correct 317 ms 130604 KB Output is correct
4 Correct 998 ms 80204 KB Output is correct
5 Correct 1020 ms 80168 KB Output is correct
6 Correct 995 ms 78636 KB Output is correct
7 Runtime error 301 ms 262144 KB Execution killed with signal 9
8 Halted 0 ms 0 KB -

Subtask #3
18.0 / 18.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 212 KB Output is correct
2 Correct 3 ms 724 KB Output is correct
3 Correct 2 ms 732 KB Output is correct
4 Correct 1 ms 340 KB Output is correct
5 Correct 1 ms 468 KB Output is correct
6 Correct 2 ms 596 KB Output is correct
7 Correct 2 ms 2004 KB Output is correct
8 Correct 2 ms 592 KB Output is correct
9 Correct 3 ms 852 KB Output is correct
10 Correct 4 ms 980 KB Output is correct
11 Correct 82 ms 17736 KB Output is correct
12 Correct 195 ms 39316 KB Output is correct
13 Correct 8 ms 1672 KB Output is correct
14 Correct 3 ms 1008 KB Output is correct
15 Correct 3 ms 1748 KB Output is correct
16 Correct 4 ms 1108 KB Output is correct
17 Correct 1093 ms 78520 KB Output is correct
18 Correct 32 ms 18412 KB Output is correct
19 Correct 6 ms 1108 KB Output is correct
20 Correct 7 ms 1676 KB Output is correct

Subtask #4
0 / 14.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 212 KB Output is correct
2 Correct 3 ms 724 KB Output is correct
3 Correct 2 ms 732 KB Output is correct
4 Correct 1 ms 340 KB Output is correct
5 Correct 1 ms 468 KB Output is correct
6 Correct 2 ms 596 KB Output is correct
7 Correct 2 ms 2004 KB Output is correct
8 Correct 2 ms 592 KB Output is correct
9 Correct 3 ms 852 KB Output is correct
10 Correct 4 ms 980 KB Output is correct
11 Correct 82 ms 17736 KB Output is correct
12 Correct 195 ms 39316 KB Output is correct
13 Correct 8 ms 1672 KB Output is correct
14 Correct 3 ms 1008 KB Output is correct
15 Correct 3 ms 1748 KB Output is correct
16 Correct 4 ms 1108 KB Output is correct
17 Correct 1093 ms 78520 KB Output is correct
18 Correct 32 ms 18412 KB Output is correct
19 Correct 6 ms 1108 KB Output is correct
20 Correct 7 ms 1676 KB Output is correct
21 Correct 17 ms 3456 KB Output is correct
22 Correct 35 ms 5324 KB Output is correct
23 Correct 31 ms 6568 KB Output is correct
24 Correct 40 ms 6740 KB Output is correct
25 Correct 14 ms 7124 KB Output is correct
26 Correct 37 ms 7400 KB Output is correct
27 Correct 38 ms 6608 KB Output is correct
28 Runtime error 444 ms 262144 KB Execution killed with signal 9
29 Halted 0 ms 0 KB -

Subtask #5
0 / 31.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 212 KB Output is correct
2 Correct 3 ms 724 KB Output is correct
3 Correct 2 ms 732 KB Output is correct
4 Correct 1 ms 340 KB Output is correct
5 Correct 1 ms 468 KB Output is correct
6 Correct 2 ms 596 KB Output is correct
7 Correct 2 ms 2004 KB Output is correct
8 Correct 2 ms 592 KB Output is correct
9 Correct 3 ms 852 KB Output is correct
10 Correct 4 ms 980 KB Output is correct
11 Correct 408 ms 41712 KB Output is correct
12 Correct 1082 ms 72936 KB Output is correct
13 Correct 317 ms 130604 KB Output is correct
14 Correct 998 ms 80204 KB Output is correct
15 Correct 1020 ms 80168 KB Output is correct
16 Correct 995 ms 78636 KB Output is correct
17 Runtime error 301 ms 262144 KB Execution killed with signal 9
18 Halted 0 ms 0 KB -