oj.uz

Submission #760703

# Submission time Handle Problem Language Result Execution time Memory
760703 2023-06-18T07:58:31 Z fatemetmhr Parachute rings (IOI12_rings) C++17
100 / 100
 1006 ms 83408 KB 
//  ~ Be Name Khoda ~  //
 
#include <bits/stdc++.h>
//#pragma GCC optimize ("O3")
//#pragma GCC target("avx2")
//#pragma GCC optimize("unroll-loops,Ofast")
 
using namespace std;
 
typedef long long ll;
 
#define pb       push_back
#define mp       make_pair
#define all(x)   x.begin(), x.end()
#define fi       first
#define se       second
 
const int maxn  =  1e6   + 10;
const int maxn5 =  1e6   + 10;
const int maxnt =  1.2e6 + 10;
const int maxn3 =  1e3   + 10;
const int mod   =  1e9   + 7;
const ll  inf   =  1e18;
 
int n;
bool found = false;
bool cy = false, morecy = false, mark[maxn5];
int cynum = 0;
vector <int> adj[maxn5];
 
 
struct _dsu{
 
    int remver, par[maxn5];
    bool noans;
 
    _dsu(){
        remver = -1;
        noans = false;
        memset(par, -1, sizeof par);
    }
 
    int get_par(int a){return par[a] < 0 ? a : par[a] = get_par(par[a]);}
 
    inline void add(int a, int b){
        if(a == remver || b == remver || a == b)
            return;
        //if(remver == 3)
        //    cout << "here " << a << ' ' << b << endl;
        a = get_par(a);
        b = get_par(b);
        //if(remver == 3)
        //    cout << "and " << a << ' ' << b << endl;
        if(a == b){
            noans = true;
            if(cy)
                morecy = true;
            else{
                cy = true;
                cynum = -par[a];
            }
            return;
        }
        if(-par[a] < -par[b])
            swap(a, b);
        par[a] += par[b];
        par[b] = a;
    }
 
} dsu[6];
 
 
void Init(int N_) {
    n = N_;
}
 
void Link(int a, int b){
    adj[a].pb(b);
    adj[b].pb(a);
    dsu[0].add(a, b);
    if(found) for(int i = 1; i < 5; i++)
        dsu[i].add(a, b);
    if(!found && adj[a].size() == 3){
        found = true;
        dsu[1].remver = a;
        for(int v = 0; v < n; v++) for(auto u : adj[v]) if(u < v)
            dsu[1].add(v, u);
        for(int i = 0; i < 3; i++){
            dsu[i + 2].remver = adj[a][i];
            for(int v = 0; v < n; v++) for(auto u : adj[v]) if(u < v)
                dsu[i + 2].add(v, u);
        }
    }
    else if(adj[a].size() == 3){
        mark[a] = mark[adj[a][0]] = mark[adj[a][1]] = mark[adj[a][2]] = true;
        for(int i = 1; i < 5; i++) if(!mark[dsu[i].remver])
            dsu[i].noans = true;
        mark[a] = mark[adj[a][0]] = mark[adj[a][1]] = mark[adj[a][2]] = false;
    }
    else if(adj[a].size() == 4){
        for(int i = 1; i < 5; i++) if(dsu[i].remver != a)
            dsu[i].noans = true;
    }
    swap(a, b);
    if(!found && adj[a].size() == 3){
        found = true;
        dsu[1].remver = a;
        for(int v = 0; v < n; v++) for(auto u : adj[v]) if(u < v)
            dsu[1].add(v, u);
        for(int i = 0; i < 3; i++){
            dsu[i + 2].remver = adj[a][i];
            for(int v = 0; v < n; v++) for(auto u : adj[v]) if(u < v)
                dsu[i + 2].add(v, u);
        }
    }
    else if(adj[a].size() == 3){
        mark[a] = mark[adj[a][0]] = mark[adj[a][1]] = mark[adj[a][2]] = true;
        for(int i = 1; i < 5; i++) if(!mark[dsu[i].remver])
            dsu[i].noans = true;
        mark[a] = mark[adj[a][0]] = mark[adj[a][1]] = mark[adj[a][2]] = false;
    }
    else if(adj[a].size() == 4){
        for(int i = 1; i < 5; i++) if(dsu[i].remver != a)
            dsu[i].noans = true;
    }
}
 
int CountCritical() {
 
    if(found){
        int num = 0;
        for(int i = 1; i < 5; i++){
            num += (!dsu[i].noans);
            //cout << i << ' ' << dsu[i].noans << ' ' << dsu[i].remver << endl;
        }
        return num;
    }
    if(!cy)
        return n;
    if(morecy)
        return 0;
    return cynum;
}

/*
4 7
1 3
1 2
2 3
0 3
0 2
0 1
-1

*/

Subtask #1
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 20 ms 47216 KB Output is correct
2 Correct 22 ms 47424 KB Output is correct
3 Correct 21 ms 47524 KB Output is correct
4 Correct 20 ms 47264 KB Output is correct
5 Correct 22 ms 47340 KB Output is correct
6 Correct 22 ms 47520 KB Output is correct
7 Correct 21 ms 47184 KB Output is correct
8 Correct 22 ms 47424 KB Output is correct
9 Correct 22 ms 47444 KB Output is correct
10 Correct 27 ms 47464 KB Output is correct

Subtask #2
17.0 / 17.0

# Verdict Execution time Memory Grader output
1 Correct 210 ms 64132 KB Output is correct
2 Correct 802 ms 72772 KB Output is correct
3 Correct 955 ms 75892 KB Output is correct
4 Correct 667 ms 78884 KB Output is correct
5 Correct 702 ms 79408 KB Output is correct
6 Correct 658 ms 78348 KB Output is correct
7 Correct 918 ms 75640 KB Output is correct
8 Correct 1006 ms 77368 KB Output is correct
9 Correct 992 ms 79232 KB Output is correct
10 Correct 421 ms 77572 KB Output is correct

Subtask #3
18.0 / 18.0

# Verdict Execution time Memory Grader output
1 Correct 20 ms 47216 KB Output is correct
2 Correct 22 ms 47424 KB Output is correct
3 Correct 21 ms 47524 KB Output is correct
4 Correct 20 ms 47264 KB Output is correct
5 Correct 22 ms 47340 KB Output is correct
6 Correct 22 ms 47520 KB Output is correct
7 Correct 21 ms 47184 KB Output is correct
8 Correct 22 ms 47424 KB Output is correct
9 Correct 22 ms 47444 KB Output is correct
10 Correct 27 ms 47464 KB Output is correct
11 Correct 26 ms 47436 KB Output is correct
12 Correct 23 ms 47628 KB Output is correct
13 Correct 25 ms 47700 KB Output is correct
14 Correct 22 ms 47548 KB Output is correct
15 Correct 26 ms 47440 KB Output is correct
16 Correct 24 ms 47740 KB Output is correct
17 Correct 24 ms 47652 KB Output is correct
18 Correct 25 ms 47820 KB Output is correct
19 Correct 23 ms 47700 KB Output is correct
20 Correct 24 ms 47656 KB Output is correct

Subtask #4
14.0 / 14.0

# Verdict Execution time Memory Grader output
1 Correct 20 ms 47216 KB Output is correct
2 Correct 22 ms 47424 KB Output is correct
3 Correct 21 ms 47524 KB Output is correct
4 Correct 20 ms 47264 KB Output is correct
5 Correct 22 ms 47340 KB Output is correct
6 Correct 22 ms 47520 KB Output is correct
7 Correct 21 ms 47184 KB Output is correct
8 Correct 22 ms 47424 KB Output is correct
9 Correct 22 ms 47444 KB Output is correct
10 Correct 27 ms 47464 KB Output is correct
11 Correct 26 ms 47436 KB Output is correct
12 Correct 23 ms 47628 KB Output is correct
13 Correct 25 ms 47700 KB Output is correct
14 Correct 22 ms 47548 KB Output is correct
15 Correct 26 ms 47440 KB Output is correct
16 Correct 24 ms 47740 KB Output is correct
17 Correct 24 ms 47652 KB Output is correct
18 Correct 25 ms 47820 KB Output is correct
19 Correct 23 ms 47700 KB Output is correct
20 Correct 24 ms 47656 KB Output is correct
21 Correct 32 ms 48596 KB Output is correct
22 Correct 41 ms 49476 KB Output is correct
23 Correct 44 ms 50028 KB Output is correct
24 Correct 57 ms 49660 KB Output is correct
25 Correct 30 ms 47908 KB Output is correct
26 Correct 48 ms 50212 KB Output is correct
27 Correct 60 ms 50964 KB Output is correct
28 Correct 49 ms 51184 KB Output is correct
29 Correct 43 ms 49576 KB Output is correct
30 Correct 50 ms 51440 KB Output is correct

Subtask #5
31.0 / 31.0

# Verdict Execution time Memory Grader output
1 Correct 20 ms 47216 KB Output is correct
2 Correct 22 ms 47424 KB Output is correct
3 Correct 21 ms 47524 KB Output is correct
4 Correct 20 ms 47264 KB Output is correct
5 Correct 22 ms 47340 KB Output is correct
6 Correct 22 ms 47520 KB Output is correct
7 Correct 21 ms 47184 KB Output is correct
8 Correct 22 ms 47424 KB Output is correct
9 Correct 22 ms 47444 KB Output is correct
10 Correct 27 ms 47464 KB Output is correct
11 Correct 210 ms 64132 KB Output is correct
12 Correct 802 ms 72772 KB Output is correct
13 Correct 955 ms 75892 KB Output is correct
14 Correct 667 ms 78884 KB Output is correct
15 Correct 702 ms 79408 KB Output is correct
16 Correct 658 ms 78348 KB Output is correct
17 Correct 918 ms 75640 KB Output is correct
18 Correct 1006 ms 77368 KB Output is correct
19 Correct 992 ms 79232 KB Output is correct
20 Correct 421 ms 77572 KB Output is correct
21 Correct 26 ms 47436 KB Output is correct
22 Correct 23 ms 47628 KB Output is correct
23 Correct 25 ms 47700 KB Output is correct
24 Correct 22 ms 47548 KB Output is correct
25 Correct 26 ms 47440 KB Output is correct
26 Correct 24 ms 47740 KB Output is correct
27 Correct 24 ms 47652 KB Output is correct
28 Correct 25 ms 47820 KB Output is correct
29 Correct 23 ms 47700 KB Output is correct
30 Correct 24 ms 47656 KB Output is correct
31 Correct 32 ms 48596 KB Output is correct
32 Correct 41 ms 49476 KB Output is correct
33 Correct 44 ms 50028 KB Output is correct
34 Correct 57 ms 49660 KB Output is correct
35 Correct 30 ms 47908 KB Output is correct
36 Correct 48 ms 50212 KB Output is correct
37 Correct 60 ms 50964 KB Output is correct
38 Correct 49 ms 51184 KB Output is correct
39 Correct 43 ms 49576 KB Output is correct
40 Correct 50 ms 51440 KB Output is correct
41 Correct 144 ms 59300 KB Output is correct
42 Correct 410 ms 70136 KB Output is correct
43 Correct 215 ms 55268 KB Output is correct
44 Correct 580 ms 83408 KB Output is correct
45 Correct 655 ms 76836 KB Output is correct
46 Correct 456 ms 81292 KB Output is correct
47 Correct 582 ms 81772 KB Output is correct
48 Correct 431 ms 71152 KB Output is correct
49 Correct 436 ms 80120 KB Output is correct
50 Correct 525 ms 79680 KB Output is correct
51 Correct 246 ms 57136 KB Output is correct
52 Correct 496 ms 77904 KB Output is correct
53 Correct 415 ms 71352 KB Output is correct
54 Correct 815 ms 79816 KB Output is correct
55 Correct 891 ms 81612 KB Output is correct