oj.uz

Submission #481682

# Submission time Handle Problem Language Result Execution time Memory
481682 2021-10-21T10:53:15 Z Haruto810198 Parachute rings (IOI12_rings) C++17
52 / 100
 1286 ms 262148 KB 
#include <bits/stdc++.h>

using namespace std;

//#define int long long
#define double long double

#define FOR(i, l, r, d) for(int i=(l); i<=(r); i+=(d))
#define szof(x) ((int)(x).size())

#define vi vector<int>
#define pii pair<int, int>

#define F first
#define S second

#define pb push_back
#define eb emplace_back
#define mkp make_pair

const int MAX = 1000010;

int n;
vi check_id;

struct Graph{
    vi edge[MAX];
    int deg[MAX];
    int p[MAX], sz[MAX];
    int cyc, cyclen, deg3;

    void init(){
        FOR(i, 0, n-1, 1){
            edge[i].clear();
            deg[i] = 0;
            p[i] = i;
            sz[i] = 1;
        }
        cyc = 0;
        cyclen = 0;
        deg3 = 0;
    }

    int findp(int v){
        if(v == p[v]) return v;
        return p[v] = findp(p[v]);
    }

    bool uni(int u, int v){
        int pu = findp(u);
        int pv = findp(v);
        if(pu == pv) return 0;
        if(sz[pu] > sz[pv]){
            p[pv] = pu;
            sz[pu] += sz[pv];
        }
        else{
            p[pu] = pv;
            sz[pv] += sz[pu];
        }
        return 1;
    }

    void add_edge(int u, int v){
        edge[u].pb(v);
        edge[v].pb(u);
        deg[u]++;
        deg[v]++;
        if(deg[u] == 3) deg3++;
        if(deg[v] == 3) deg3++;
        if(!uni(u, v) and deg3 == 0){
            cyc++;
            cyclen = sz[findp(u)];
        }
    }
};

Graph G_now, G_check[4];

void Init(int N){
    n = N;
    G_now.init();
}

void Link(int u, int v){

    if(G_now.deg3 == 0){
        G_now.add_edge(u, v);

        if(G_now.deg3 > 0){
            if(G_now.deg[u] < G_now.deg[v]) swap(u, v);
            check_id = G_now.edge[u];
            check_id.pb(u);

            FOR(i, 0, 3, 1){
                G_check[i].init();
                FOR(uu, 0, n-1, 1){
                    if(uu == check_id[i]) continue;
                    for(int vv : G_now.edge[uu]){
                        if(vv == check_id[i] or uu < vv) continue;
                        G_check[i].add_edge(uu, vv);
                    }
                }
            }
        }

        return;
    }

    if(G_now.deg3 > 0){
        FOR(i, 0, 3, 1){
            if(u != check_id[i] and v != check_id[i]){
                G_check[i].add_edge(u, v);
            }
        }
    }

}

int CountCritical(){
    if(G_now.deg3 == 0){
        if(G_now.cyc == 0) return n;
        else if(G_now.cyc == 1) return G_now.cyclen;
        else return 0;
    }
    else{
        int ret = 0;
        FOR(i, 0, 3, 1){
            if(G_check[i].cyc == 0 and G_check[i].deg3 == 0) ret++;
        }
        return ret;
    }
}

Subtask #1
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 51 ms 117700 KB Output is correct
2 Correct 55 ms 118744 KB Output is correct
3 Correct 57 ms 118768 KB Output is correct
4 Correct 52 ms 117716 KB Output is correct
5 Correct 59 ms 117848 KB Output is correct
6 Correct 55 ms 118056 KB Output is correct
7 Correct 53 ms 118260 KB Output is correct
8 Correct 61 ms 117976 KB Output is correct
9 Correct 57 ms 118892 KB Output is correct
10 Correct 63 ms 118856 KB Output is correct

Subtask #2
0 / 17.0

# Verdict Execution time Memory Grader output
1 Correct 431 ms 142960 KB Output is correct
2 Runtime error 1286 ms 262148 KB Execution killed with signal 9
3 Halted 0 ms 0 KB -

Subtask #3
18.0 / 18.0

# Verdict Execution time Memory Grader output
1 Correct 51 ms 117700 KB Output is correct
2 Correct 55 ms 118744 KB Output is correct
3 Correct 57 ms 118768 KB Output is correct
4 Correct 52 ms 117716 KB Output is correct
5 Correct 59 ms 117848 KB Output is correct
6 Correct 55 ms 118056 KB Output is correct
7 Correct 53 ms 118260 KB Output is correct
8 Correct 61 ms 117976 KB Output is correct
9 Correct 57 ms 118892 KB Output is correct
10 Correct 63 ms 118856 KB Output is correct
11 Correct 68 ms 118796 KB Output is correct
12 Correct 84 ms 120112 KB Output is correct
13 Correct 60 ms 119876 KB Output is correct
14 Correct 57 ms 119156 KB Output is correct
15 Correct 58 ms 119492 KB Output is correct
16 Correct 55 ms 118284 KB Output is correct
17 Correct 61 ms 119748 KB Output is correct
18 Correct 62 ms 120700 KB Output is correct
19 Correct 55 ms 118216 KB Output is correct
20 Correct 67 ms 120132 KB Output is correct

Subtask #4
14.0 / 14.0

# Verdict Execution time Memory Grader output
1 Correct 51 ms 117700 KB Output is correct
2 Correct 55 ms 118744 KB Output is correct
3 Correct 57 ms 118768 KB Output is correct
4 Correct 52 ms 117716 KB Output is correct
5 Correct 59 ms 117848 KB Output is correct
6 Correct 55 ms 118056 KB Output is correct
7 Correct 53 ms 118260 KB Output is correct
8 Correct 61 ms 117976 KB Output is correct
9 Correct 57 ms 118892 KB Output is correct
10 Correct 63 ms 118856 KB Output is correct
11 Correct 68 ms 118796 KB Output is correct
12 Correct 84 ms 120112 KB Output is correct
13 Correct 60 ms 119876 KB Output is correct
14 Correct 57 ms 119156 KB Output is correct
15 Correct 58 ms 119492 KB Output is correct
16 Correct 55 ms 118284 KB Output is correct
17 Correct 61 ms 119748 KB Output is correct
18 Correct 62 ms 120700 KB Output is correct
19 Correct 55 ms 118216 KB Output is correct
20 Correct 67 ms 120132 KB Output is correct
21 Correct 72 ms 119752 KB Output is correct
22 Correct 77 ms 120912 KB Output is correct
23 Correct 96 ms 121776 KB Output is correct
24 Correct 163 ms 129752 KB Output is correct
25 Correct 84 ms 124540 KB Output is correct
26 Correct 161 ms 132424 KB Output is correct
27 Correct 93 ms 122500 KB Output is correct
28 Correct 184 ms 135044 KB Output is correct
29 Correct 130 ms 130240 KB Output is correct
30 Correct 95 ms 123204 KB Output is correct

Subtask #5
0 / 31.0

# Verdict Execution time Memory Grader output
1 Correct 51 ms 117700 KB Output is correct
2 Correct 55 ms 118744 KB Output is correct
3 Correct 57 ms 118768 KB Output is correct
4 Correct 52 ms 117716 KB Output is correct
5 Correct 59 ms 117848 KB Output is correct
6 Correct 55 ms 118056 KB Output is correct
7 Correct 53 ms 118260 KB Output is correct
8 Correct 61 ms 117976 KB Output is correct
9 Correct 57 ms 118892 KB Output is correct
10 Correct 63 ms 118856 KB Output is correct
11 Correct 431 ms 142960 KB Output is correct
12 Runtime error 1286 ms 262148 KB Execution killed with signal 9
13 Halted 0 ms 0 KB -