oj.uz

Submission #647982

# Submission time Handle Problem Language Result Execution time Memory
647982 2022-10-04T17:37:48 Z mychecksedad Political Development (BOI17_politicaldevelopment) C++17
77 / 100
 3000 ms 366428 KB 
/* Author : Mychecksdead */
#include<bits/stdc++.h>
#include <ext/pb_ds/tree_policy.hpp>
using namespace __gnu_pbds;
using namespace std;
typedef long long int ll;
typedef long double ld;
#define MOD (1000000000+7)
#define MOD1 (998244353)
#define PI 3.1415926535
#define pb push_back
#define setp() cout << setprecision(15)
#define all(x) x.begin(), x.end()
#define oset tree<int, null_type,less_equal<int>, rb_tree_tag,tree_order_statistics_node_update>
#define debug(x) cerr << #x << " is " << x << '\n';
const int N = 1e6+100, M = 1e5+10, F = 2147483646, K = 20, MO = 99000007;


int n, k;
vector<int> g[N], path;
vector<bool> vis(N);
vector<bitset<50005>> is;
ll e[N];
void dfs(int v, int p){
    vis[v] = 1;
    path.pb(v);
    for(int u: g[v]){
        if(u != p){
            if(vis[u]){
                if(path[path.size() - 3] == u){
                    cout << 3;
                    exit(0);
                }
            }else{
                dfs(u, v);
            }
        }    
    }
    path.pop_back();
}

int mod(ll a){
    return ((a%MO)+MO)%MO;
}
vector<vector<int>> v;
void dfs2(int vv, int p){
    vis[vv] = 1;
    path.pb(vv);
    for(int u: g[vv]){
        if(u != p){
            if(vis[u]){
                if(path[path.size() - 3] == u){
                    v.pb({vv, path[path.size() - 2], path[path.size() - 3]});
                }
            }else{
                dfs2(u, vv);
            }
        }    
    }
    path.pop_back();
}

void solve(){
    cin >> n >> k;
    is.resize(n+1);
    for(int i = 0; i < n; ++i){
        int d; cin >> d; 
        for(int j = 0; j < d; ++j){
            int x; cin >> x; g[i].pb(x); is[i][x] = 1;
        }
    }
    if(k <= 2){
        for(int i = 0; i < n; ++i){
            if(g[i].size()){
                cout << 2;
                return;
            }
        }
        cout << 1;
        return;
    }
    if(k <= 3){
        for(int i = 0; i < n; ++i) if(!vis[i]) dfs(i, i);
        for(int i = 0; i < n; ++i){
            if(g[i].size()){
                cout << 2;
                return;
            }
        }
        cout << 1;
        return;
    }

    e[0] = 1;
    for(int i = 1; i < N; ++i) e[i] = (e[i - 1] * 5) % MO;

    bool o = 0;
    for(int i = 0; i < n; ++i) if(g[i].size() > 0) o = 1;
    if(!o){
        cout << 1;
        return;
    }
    for(int i = 0; i < n; ++i) for(int u: g[i]) if(u < i) v.pb(vector<int> {u, i});
    for(int j = 3; j <= k; ++j){
        bitset<50005> out, in;
        vector<vector<int>> t;
        bitset<N*100> m;

        for(auto &u: v){
            ll h = 0;
            for(int x: u) in[x] = 1, h += e[x];
            h = mod(h);
            vector<int> extend;
            for(int x: u){
                for(int e: g[x]){
                    if(!out[e] && !in[e]){
                        out[e] = 1;
                        extend.pb(e);
                    }
                }
            }
            for(int x: extend){
                out[x] = 0;
                bool ok = 1;
                for(int p: u){
                    if(!is[p][x]){
                        ok = 0;
                        break;
                    }
                }
                if(ok){
                    h = mod(h + e[x]);
                    if(!m[h]){
                        m[h] = 1;
                        u.pb(x);
                        t.pb(u);
                        u.pop_back();
                    }
                    h = mod(h - e[x]);
                }
            }
            for(int x: u) in[x] = 0;
        }
        if(t.size() == 0){
            cout << j - 1;
            return;
        }
        v = t;
    }
    cout << k;
}   





int main(){
    cin.tie(0); ios::sync_with_stdio(0);
    int T = 1, aa;
    // cin >> T;aa=T;
    while(T--){
        // cout << "Case #" << aa-T << ": ";
        solve();
        cout << '\n';
    }
    return 0;
 
}

Compilation message

politicaldevelopment.cpp: In function 'int main()':
politicaldevelopment.cpp:159:16: warning: unused variable 'aa' [-Wunused-variable]
  159 |     int T = 1, aa;
      |                ^~

Subtask #1
4.0 / 4.0

# Verdict Execution time Memory Grader output
1 Correct 18 ms 36228 KB Output is correct
2 Correct 22 ms 36148 KB Output is correct
3 Correct 40 ms 66932 KB Output is correct
4 Correct 31 ms 66968 KB Output is correct
5 Correct 36 ms 66900 KB Output is correct
6 Correct 30 ms 66860 KB Output is correct
7 Correct 31 ms 66968 KB Output is correct
8 Correct 29 ms 66708 KB Output is correct
9 Correct 18 ms 36124 KB Output is correct
10 Correct 33 ms 66772 KB Output is correct

Subtask #2
12.0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 18 ms 36228 KB Output is correct
2 Correct 22 ms 36148 KB Output is correct
3 Correct 40 ms 66932 KB Output is correct
4 Correct 31 ms 66968 KB Output is correct
5 Correct 36 ms 66900 KB Output is correct
6 Correct 30 ms 66860 KB Output is correct
7 Correct 31 ms 66968 KB Output is correct
8 Correct 29 ms 66708 KB Output is correct
9 Correct 18 ms 36124 KB Output is correct
10 Correct 33 ms 66772 KB Output is correct
11 Correct 30 ms 66888 KB Output is correct
12 Correct 34 ms 66940 KB Output is correct
13 Correct 20 ms 36120 KB Output is correct
14 Correct 31 ms 66844 KB Output is correct
15 Correct 18 ms 36192 KB Output is correct
16 Correct 32 ms 66924 KB Output is correct
17 Correct 20 ms 36180 KB Output is correct
18 Correct 32 ms 66964 KB Output is correct
19 Correct 32 ms 66692 KB Output is correct
20 Correct 31 ms 66896 KB Output is correct
21 Correct 31 ms 66900 KB Output is correct
22 Correct 30 ms 66724 KB Output is correct
23 Correct 31 ms 66884 KB Output is correct
24 Correct 30 ms 66688 KB Output is correct
25 Correct 34 ms 66952 KB Output is correct
26 Correct 31 ms 67028 KB Output is correct
27 Correct 32 ms 67292 KB Output is correct
28 Correct 31 ms 67048 KB Output is correct
29 Correct 32 ms 67304 KB Output is correct
30 Correct 34 ms 66944 KB Output is correct
31 Correct 31 ms 67156 KB Output is correct
32 Correct 31 ms 66864 KB Output is correct
33 Correct 35 ms 67040 KB Output is correct
34 Correct 34 ms 67160 KB Output is correct
35 Correct 26 ms 51592 KB Output is correct
36 Correct 26 ms 51668 KB Output is correct
37 Correct 29 ms 51572 KB Output is correct
38 Correct 22 ms 43772 KB Output is correct
39 Correct 25 ms 43828 KB Output is correct
40 Correct 32 ms 66992 KB Output is correct
41 Correct 21 ms 43808 KB Output is correct
42 Correct 33 ms 66912 KB Output is correct
43 Correct 39 ms 66876 KB Output is correct

Subtask #3
23.0 / 23.0

# Verdict Execution time Memory Grader output
1 Correct 41 ms 74620 KB Output is correct
2 Correct 30 ms 44116 KB Output is correct
3 Correct 28 ms 44040 KB Output is correct
4 Correct 32 ms 43984 KB Output is correct
5 Correct 29 ms 44112 KB Output is correct
6 Correct 30 ms 44120 KB Output is correct
7 Correct 29 ms 44096 KB Output is correct
8 Correct 29 ms 44120 KB Output is correct
9 Correct 30 ms 44132 KB Output is correct
10 Correct 29 ms 44016 KB Output is correct
11 Correct 458 ms 366200 KB Output is correct
12 Correct 28 ms 44108 KB Output is correct
13 Correct 417 ms 366368 KB Output is correct
14 Correct 30 ms 44044 KB Output is correct
15 Correct 408 ms 366332 KB Output is correct
16 Correct 424 ms 366324 KB Output is correct
17 Correct 448 ms 366428 KB Output is correct
18 Correct 423 ms 366324 KB Output is correct

Subtask #4
38.0 / 38.0

# Verdict Execution time Memory Grader output
1 Correct 18 ms 36228 KB Output is correct
2 Correct 22 ms 36148 KB Output is correct
3 Correct 40 ms 66932 KB Output is correct
4 Correct 31 ms 66968 KB Output is correct
5 Correct 36 ms 66900 KB Output is correct
6 Correct 30 ms 66860 KB Output is correct
7 Correct 31 ms 66968 KB Output is correct
8 Correct 29 ms 66708 KB Output is correct
9 Correct 18 ms 36124 KB Output is correct
10 Correct 33 ms 66772 KB Output is correct
11 Correct 30 ms 66888 KB Output is correct
12 Correct 34 ms 66940 KB Output is correct
13 Correct 20 ms 36120 KB Output is correct
14 Correct 31 ms 66844 KB Output is correct
15 Correct 18 ms 36192 KB Output is correct
16 Correct 32 ms 66924 KB Output is correct
17 Correct 20 ms 36180 KB Output is correct
18 Correct 32 ms 66964 KB Output is correct
19 Correct 32 ms 66692 KB Output is correct
20 Correct 31 ms 66896 KB Output is correct
21 Correct 31 ms 66900 KB Output is correct
22 Correct 30 ms 66724 KB Output is correct
23 Correct 31 ms 66884 KB Output is correct
24 Correct 30 ms 66688 KB Output is correct
25 Correct 34 ms 66952 KB Output is correct
26 Correct 31 ms 67028 KB Output is correct
27 Correct 32 ms 67292 KB Output is correct
28 Correct 31 ms 67048 KB Output is correct
29 Correct 32 ms 67304 KB Output is correct
30 Correct 34 ms 66944 KB Output is correct
31 Correct 31 ms 67156 KB Output is correct
32 Correct 31 ms 66864 KB Output is correct
33 Correct 35 ms 67040 KB Output is correct
34 Correct 34 ms 67160 KB Output is correct
35 Correct 26 ms 51592 KB Output is correct
36 Correct 26 ms 51668 KB Output is correct
37 Correct 29 ms 51572 KB Output is correct
38 Correct 22 ms 43772 KB Output is correct
39 Correct 25 ms 43828 KB Output is correct
40 Correct 32 ms 66992 KB Output is correct
41 Correct 21 ms 43808 KB Output is correct
42 Correct 33 ms 66912 KB Output is correct
43 Correct 39 ms 66876 KB Output is correct
44 Correct 250 ms 87124 KB Output is correct
45 Correct 27 ms 44036 KB Output is correct
46 Correct 49 ms 75388 KB Output is correct
47 Correct 61 ms 76144 KB Output is correct
48 Correct 55 ms 75400 KB Output is correct
49 Correct 58 ms 76184 KB Output is correct
50 Correct 59 ms 76092 KB Output is correct
51 Correct 106 ms 77872 KB Output is correct
52 Correct 32 ms 66964 KB Output is correct
53 Correct 1855 ms 77700 KB Output is correct
54 Correct 134 ms 77792 KB Output is correct
55 Correct 60 ms 75216 KB Output is correct
56 Correct 38 ms 66952 KB Output is correct
57 Correct 42 ms 74572 KB Output is correct
58 Correct 1840 ms 77712 KB Output is correct
59 Correct 56 ms 75916 KB Output is correct
60 Correct 44 ms 75032 KB Output is correct
61 Correct 55 ms 75940 KB Output is correct
62 Correct 62 ms 75932 KB Output is correct
63 Correct 239 ms 87080 KB Output is correct
64 Correct 155 ms 81524 KB Output is correct
65 Correct 47 ms 75340 KB Output is correct
66 Correct 55 ms 75972 KB Output is correct
67 Correct 142 ms 77732 KB Output is correct
68 Correct 154 ms 81440 KB Output is correct
69 Correct 47 ms 75456 KB Output is correct
70 Correct 66 ms 76176 KB Output is correct
71 Correct 137 ms 77748 KB Output is correct
72 Correct 113 ms 76760 KB Output is correct
73 Correct 43 ms 75096 KB Output is correct
74 Correct 66 ms 76164 KB Output is correct
75 Correct 101 ms 76872 KB Output is correct
76 Correct 104 ms 75524 KB Output is correct
77 Correct 71 ms 76548 KB Output is correct
78 Correct 52 ms 75080 KB Output is correct
79 Correct 44 ms 60240 KB Output is correct
80 Correct 102 ms 75524 KB Output is correct
81 Correct 61 ms 76480 KB Output is correct
82 Correct 32 ms 51796 KB Output is correct
83 Correct 42 ms 60304 KB Output is correct
84 Correct 67 ms 76240 KB Output is correct
85 Correct 33 ms 51728 KB Output is correct
86 Correct 61 ms 76236 KB Output is correct

Subtask #5
0 / 23.0

# Verdict Execution time Memory Grader output
1 Correct 18 ms 36228 KB Output is correct
2 Correct 22 ms 36148 KB Output is correct
3 Correct 40 ms 66932 KB Output is correct
4 Correct 31 ms 66968 KB Output is correct
5 Correct 36 ms 66900 KB Output is correct
6 Correct 30 ms 66860 KB Output is correct
7 Correct 31 ms 66968 KB Output is correct
8 Correct 29 ms 66708 KB Output is correct
9 Correct 18 ms 36124 KB Output is correct
10 Correct 33 ms 66772 KB Output is correct
11 Correct 30 ms 66888 KB Output is correct
12 Correct 34 ms 66940 KB Output is correct
13 Correct 20 ms 36120 KB Output is correct
14 Correct 31 ms 66844 KB Output is correct
15 Correct 18 ms 36192 KB Output is correct
16 Correct 32 ms 66924 KB Output is correct
17 Correct 20 ms 36180 KB Output is correct
18 Correct 32 ms 66964 KB Output is correct
19 Correct 32 ms 66692 KB Output is correct
20 Correct 31 ms 66896 KB Output is correct
21 Correct 31 ms 66900 KB Output is correct
22 Correct 30 ms 66724 KB Output is correct
23 Correct 31 ms 66884 KB Output is correct
24 Correct 30 ms 66688 KB Output is correct
25 Correct 34 ms 66952 KB Output is correct
26 Correct 31 ms 67028 KB Output is correct
27 Correct 32 ms 67292 KB Output is correct
28 Correct 31 ms 67048 KB Output is correct
29 Correct 32 ms 67304 KB Output is correct
30 Correct 34 ms 66944 KB Output is correct
31 Correct 31 ms 67156 KB Output is correct
32 Correct 31 ms 66864 KB Output is correct
33 Correct 35 ms 67040 KB Output is correct
34 Correct 34 ms 67160 KB Output is correct
35 Correct 26 ms 51592 KB Output is correct
36 Correct 26 ms 51668 KB Output is correct
37 Correct 29 ms 51572 KB Output is correct
38 Correct 22 ms 43772 KB Output is correct
39 Correct 25 ms 43828 KB Output is correct
40 Correct 32 ms 66992 KB Output is correct
41 Correct 21 ms 43808 KB Output is correct
42 Correct 33 ms 66912 KB Output is correct
43 Correct 39 ms 66876 KB Output is correct
44 Correct 27 ms 43988 KB Output is correct
45 Correct 339 ms 362608 KB Output is correct
46 Execution timed out 3032 ms 356780 KB Time limit exceeded
47 Halted 0 ms 0 KB -