oj.uz

Submission #647973

# Submission time Handle Problem Language Result Execution time Memory
647973 2022-10-04T17:22:13 Z mychecksedad Political Development (BOI17_politicaldevelopment) C++17
16 / 100
 215 ms 341292 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 = 9900047;


int n, k;
vector<int> g[N], path;
vector<bool> vis(N);
vector<bitset<50001>> 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){
    if(a < 0) a += MO;
    return a >= MO ? a - MO : a;
}
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);
    int a = 0;
    for(int i = 0; i < n; ++i){
        int d; cin >> d; a += 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] * 3) % 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) if(!vis[i]) dfs(i, i);

    if(v.size() == 0){
        cout << 2;
        return;
    }

    for(int j = 4; j <= k; ++j){
        bitset<50001> out, in;
        vector<vector<int>> t;
        bitset<N*10> m;

        for(auto &u: v){
            ll h = 0;
            for(int x: u) in[x] = 1, h += e[x];
            h = mod(h%MO);
            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:168:16: warning: unused variable 'aa' [-Wunused-variable]
  168 |     int T = 1, aa;
      |                ^~

Subtask #1
4.0 / 4.0

# Verdict Execution time Memory Grader output
1 Correct 14 ms 25172 KB Output is correct
2 Correct 15 ms 25140 KB Output is correct
3 Correct 33 ms 55900 KB Output is correct
4 Correct 27 ms 55976 KB Output is correct
5 Correct 29 ms 55852 KB Output is correct
6 Correct 29 ms 55872 KB Output is correct
7 Correct 31 ms 55936 KB Output is correct
8 Correct 24 ms 55764 KB Output is correct
9 Correct 13 ms 25172 KB Output is correct
10 Correct 25 ms 55796 KB Output is correct

Subtask #2
12.0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 14 ms 25172 KB Output is correct
2 Correct 15 ms 25140 KB Output is correct
3 Correct 33 ms 55900 KB Output is correct
4 Correct 27 ms 55976 KB Output is correct
5 Correct 29 ms 55852 KB Output is correct
6 Correct 29 ms 55872 KB Output is correct
7 Correct 31 ms 55936 KB Output is correct
8 Correct 24 ms 55764 KB Output is correct
9 Correct 13 ms 25172 KB Output is correct
10 Correct 25 ms 55796 KB Output is correct
11 Correct 24 ms 55884 KB Output is correct
12 Correct 29 ms 55940 KB Output is correct
13 Correct 14 ms 25172 KB Output is correct
14 Correct 27 ms 55972 KB Output is correct
15 Correct 14 ms 25172 KB Output is correct
16 Correct 31 ms 55892 KB Output is correct
17 Correct 14 ms 25168 KB Output is correct
18 Correct 27 ms 55924 KB Output is correct
19 Correct 28 ms 55700 KB Output is correct
20 Correct 27 ms 55892 KB Output is correct
21 Correct 25 ms 55892 KB Output is correct
22 Correct 24 ms 55776 KB Output is correct
23 Correct 27 ms 55892 KB Output is correct
24 Correct 26 ms 55784 KB Output is correct
25 Correct 34 ms 55840 KB Output is correct
26 Correct 28 ms 56020 KB Output is correct
27 Correct 26 ms 56256 KB Output is correct
28 Correct 27 ms 56048 KB Output is correct
29 Correct 27 ms 56256 KB Output is correct
30 Correct 26 ms 55964 KB Output is correct
31 Correct 30 ms 56124 KB Output is correct
32 Correct 28 ms 55860 KB Output is correct
33 Correct 27 ms 56124 KB Output is correct
34 Correct 32 ms 56108 KB Output is correct
35 Correct 25 ms 40660 KB Output is correct
36 Correct 21 ms 40660 KB Output is correct
37 Correct 21 ms 40660 KB Output is correct
38 Correct 17 ms 32852 KB Output is correct
39 Correct 17 ms 32852 KB Output is correct
40 Correct 29 ms 55928 KB Output is correct
41 Correct 17 ms 32740 KB Output is correct
42 Correct 30 ms 55880 KB Output is correct
43 Correct 31 ms 55920 KB Output is correct

Subtask #3
0 / 23.0

# Verdict Execution time Memory Grader output
1 Correct 34 ms 63500 KB Output is correct
2 Correct 21 ms 33108 KB Output is correct
3 Correct 21 ms 33068 KB Output is correct
4 Correct 19 ms 32948 KB Output is correct
5 Incorrect 20 ms 33108 KB Output isn't correct
6 Halted 0 ms 0 KB -

Subtask #4
0 / 38.0

# Verdict Execution time Memory Grader output
1 Correct 14 ms 25172 KB Output is correct
2 Correct 15 ms 25140 KB Output is correct
3 Correct 33 ms 55900 KB Output is correct
4 Correct 27 ms 55976 KB Output is correct
5 Correct 29 ms 55852 KB Output is correct
6 Correct 29 ms 55872 KB Output is correct
7 Correct 31 ms 55936 KB Output is correct
8 Correct 24 ms 55764 KB Output is correct
9 Correct 13 ms 25172 KB Output is correct
10 Correct 25 ms 55796 KB Output is correct
11 Correct 24 ms 55884 KB Output is correct
12 Correct 29 ms 55940 KB Output is correct
13 Correct 14 ms 25172 KB Output is correct
14 Correct 27 ms 55972 KB Output is correct
15 Correct 14 ms 25172 KB Output is correct
16 Correct 31 ms 55892 KB Output is correct
17 Correct 14 ms 25168 KB Output is correct
18 Correct 27 ms 55924 KB Output is correct
19 Correct 28 ms 55700 KB Output is correct
20 Correct 27 ms 55892 KB Output is correct
21 Correct 25 ms 55892 KB Output is correct
22 Correct 24 ms 55776 KB Output is correct
23 Correct 27 ms 55892 KB Output is correct
24 Correct 26 ms 55784 KB Output is correct
25 Correct 34 ms 55840 KB Output is correct
26 Correct 28 ms 56020 KB Output is correct
27 Correct 26 ms 56256 KB Output is correct
28 Correct 27 ms 56048 KB Output is correct
29 Correct 27 ms 56256 KB Output is correct
30 Correct 26 ms 55964 KB Output is correct
31 Correct 30 ms 56124 KB Output is correct
32 Correct 28 ms 55860 KB Output is correct
33 Correct 27 ms 56124 KB Output is correct
34 Correct 32 ms 56108 KB Output is correct
35 Correct 25 ms 40660 KB Output is correct
36 Correct 21 ms 40660 KB Output is correct
37 Correct 21 ms 40660 KB Output is correct
38 Correct 17 ms 32852 KB Output is correct
39 Correct 17 ms 32852 KB Output is correct
40 Correct 29 ms 55928 KB Output is correct
41 Correct 17 ms 32740 KB Output is correct
42 Correct 30 ms 55880 KB Output is correct
43 Correct 31 ms 55920 KB Output is correct
44 Incorrect 37 ms 63796 KB Output isn't correct
45 Halted 0 ms 0 KB -

Subtask #5
0 / 23.0

# Verdict Execution time Memory Grader output
1 Correct 14 ms 25172 KB Output is correct
2 Correct 15 ms 25140 KB Output is correct
3 Correct 33 ms 55900 KB Output is correct
4 Correct 27 ms 55976 KB Output is correct
5 Correct 29 ms 55852 KB Output is correct
6 Correct 29 ms 55872 KB Output is correct
7 Correct 31 ms 55936 KB Output is correct
8 Correct 24 ms 55764 KB Output is correct
9 Correct 13 ms 25172 KB Output is correct
10 Correct 25 ms 55796 KB Output is correct
11 Correct 24 ms 55884 KB Output is correct
12 Correct 29 ms 55940 KB Output is correct
13 Correct 14 ms 25172 KB Output is correct
14 Correct 27 ms 55972 KB Output is correct
15 Correct 14 ms 25172 KB Output is correct
16 Correct 31 ms 55892 KB Output is correct
17 Correct 14 ms 25168 KB Output is correct
18 Correct 27 ms 55924 KB Output is correct
19 Correct 28 ms 55700 KB Output is correct
20 Correct 27 ms 55892 KB Output is correct
21 Correct 25 ms 55892 KB Output is correct
22 Correct 24 ms 55776 KB Output is correct
23 Correct 27 ms 55892 KB Output is correct
24 Correct 26 ms 55784 KB Output is correct
25 Correct 34 ms 55840 KB Output is correct
26 Correct 28 ms 56020 KB Output is correct
27 Correct 26 ms 56256 KB Output is correct
28 Correct 27 ms 56048 KB Output is correct
29 Correct 27 ms 56256 KB Output is correct
30 Correct 26 ms 55964 KB Output is correct
31 Correct 30 ms 56124 KB Output is correct
32 Correct 28 ms 55860 KB Output is correct
33 Correct 27 ms 56124 KB Output is correct
34 Correct 32 ms 56108 KB Output is correct
35 Correct 25 ms 40660 KB Output is correct
36 Correct 21 ms 40660 KB Output is correct
37 Correct 21 ms 40660 KB Output is correct
38 Correct 17 ms 32852 KB Output is correct
39 Correct 17 ms 32852 KB Output is correct
40 Correct 29 ms 55928 KB Output is correct
41 Correct 17 ms 32740 KB Output is correct
42 Correct 30 ms 55880 KB Output is correct
43 Correct 31 ms 55920 KB Output is correct
44 Correct 21 ms 32980 KB Output is correct
45 Incorrect 215 ms 341292 KB Output isn't correct
46 Halted 0 ms 0 KB -