oj.uz

Submission #647871

# Submission time Handle Problem Language Result Execution time Memory
647871 2022-10-04T10:21:54 Z mychecksedad Political Development (BOI17_politicaldevelopment) C++17
0 / 100
 16 ms 24120 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;


int n, k;
vector<int> g[N], path;
vector<bool> vis(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();
}

void solve(){
    cin >> n >> k;
    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);
        }
    }
    if(k <= 2){
        for(int i = 0; i < n; ++i){
            if(g[i].size()){
                cout << 2;
                return;
            }
        }
        cout << 1;
    }
    if(k <= 3){
        for(int i = 0; i < n; ++i) dfs(i, i);
        for(int i = 0; i < n; ++i){
            if(g[i].size()){
                cout << 2;
                return;
            }
        }
        cout << 1;
    }
}   





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:75:16: warning: unused variable 'aa' [-Wunused-variable]
   75 |     int T = 1, aa;
      |                ^~

Subtask #1
0 / 4.0

# Verdict Execution time Memory Grader output
1 Correct 13 ms 23892 KB Output is correct
2 Correct 16 ms 23892 KB Output is correct
3 Correct 14 ms 24088 KB Output is correct
4 Correct 13 ms 24020 KB Output is correct
5 Correct 13 ms 24024 KB Output is correct
6 Correct 13 ms 24020 KB Output is correct
7 Correct 13 ms 24120 KB Output is correct
8 Incorrect 12 ms 23892 KB Output isn't correct
9 Halted 0 ms 0 KB -

Subtask #2
0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 13 ms 23892 KB Output is correct
2 Correct 16 ms 23892 KB Output is correct
3 Correct 14 ms 24088 KB Output is correct
4 Correct 13 ms 24020 KB Output is correct
5 Correct 13 ms 24024 KB Output is correct
6 Correct 13 ms 24020 KB Output is correct
7 Correct 13 ms 24120 KB Output is correct
8 Incorrect 12 ms 23892 KB Output isn't correct
9 Halted 0 ms 0 KB -

Subtask #3
0 / 23.0

# Verdict Execution time Memory Grader output
1 Incorrect 14 ms 23860 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #4
0 / 38.0

# Verdict Execution time Memory Grader output
1 Correct 13 ms 23892 KB Output is correct
2 Correct 16 ms 23892 KB Output is correct
3 Correct 14 ms 24088 KB Output is correct
4 Correct 13 ms 24020 KB Output is correct
5 Correct 13 ms 24024 KB Output is correct
6 Correct 13 ms 24020 KB Output is correct
7 Correct 13 ms 24120 KB Output is correct
8 Incorrect 12 ms 23892 KB Output isn't correct
9 Halted 0 ms 0 KB -

Subtask #5
0 / 23.0

# Verdict Execution time Memory Grader output
1 Correct 13 ms 23892 KB Output is correct
2 Correct 16 ms 23892 KB Output is correct
3 Correct 14 ms 24088 KB Output is correct
4 Correct 13 ms 24020 KB Output is correct
5 Correct 13 ms 24024 KB Output is correct
6 Correct 13 ms 24020 KB Output is correct
7 Correct 13 ms 24120 KB Output is correct
8 Incorrect 12 ms 23892 KB Output isn't correct
9 Halted 0 ms 0 KB -