oj.uz

Submission #567334

# Submission time Handle Problem Language Result Execution time Memory
567334 2022-05-23T10:38:59 Z SavicS Political Development (BOI17_politicaldevelopment) C++17
27 / 100
 1931 ms 36176 KB 
#include <ext/pb_ds/assoc_container.hpp>
#include <ext/pb_ds/tree_policy.hpp>
#include <bits/stdc++.h>
 
using namespace std;
using namespace __gnu_pbds;
 
typedef long long ll;
typedef long double ldb;
 
typedef pair<int,int> pii;
typedef pair<ll,ll> pll;
typedef pair<ldb,ldb> pdd;

#define ff(i,a,b) for(int i = a; i <= b; i++)
#define fb(i,b,a) for(int i = b; i >= a; i--)
#define trav(a,x) for (auto& a : x)
 
#define sz(a) (int)(a).size()
#define fi first
#define se second
#define pb push_back
#define lb lower_bound
#define ub upper_bound
#define all(a) a.begin(), a.end()
#define rall(a) a.rbegin(), a.rend()
 
mt19937 rng(chrono::steady_clock::now().time_since_epoch().count());

template<typename T>
using ordered_set = tree<T, null_type, less<T>, rb_tree_tag, tree_order_statistics_node_update>;

// os.order_of_key(k) the number of elements in the os less than k
// *os.find_by_order(k)  print the k-th smallest number in os(0-based)

const int mod = 1000000007;
const int inf = 1e9 + 5;
const int mxN = 50005; 

int n, K;

vector<int> g[mxN];
int deg[mxN];

bool los[mxN];

int dp[(1 << 10)];
int msk[(1 << 10)];

int main() {
    cin.tie(0)->sync_with_stdio(0);

    cin >> n >> K; 

    map<pii,bool> ima;
    ff(i,1,n){
        int len;
        cin >> len;
        ff(j,1,len){
            int X;
            cin >> X; X++;
            g[i].pb(X); deg[i] += 1;
            ima[{i, X}] = ima[{X, i}] = 1;
        }
    }

    set<pii> s;
    ff(i,1,n)s.insert({deg[i], i});

    int rez = 0;
    while(sz(s)){
        pii X = *s.begin(); s.erase(X); los[X.se] = 1;

        vector<int> vec; vec.pb(X.se);
        for(auto c : g[X.se]){
            if(los[c] == 0){
                vec.pb(c);
            }
        }

        int L = sz(vec); // assert(L <= 10);

        if(L > 10){
            cout << 0 << '\n';
            return 0;
        }

        ff(i,0,L - 1){
            msk[(1 << i)] = (1 << i);
            ff(j,0,L - 1){
                if(ima.count({vec[i], vec[j]}) == 1){
                    msk[(1 << i)] |= (1 << j);
                }
            }
        }

        dp[0] = (1 << L) - 1;
        ff(mask,1,(1 << L) - 1){
            int j = mask & (-mask);
            dp[mask] = dp[mask ^ j] & msk[j];
        }        

        ff(mask,1,(1 << L) - 1){
            if((dp[mask] & mask) == mask){
                rez = max(rez, __builtin_popcount(mask));
            }
        }

        ff(i,0,L - 1){
            s.erase({deg[vec[i]], vec[i]});
            deg[vec[i]] -= 1;
            if(deg[vec[i]] > 0)s.insert({deg[vec[i]], vec[i]});
        }

    }

    cout << rez << '\n';

    return 0;
}
/*

5 3
2 1 2
3 0 2 3
3 0 1 4
2 1 4
2 2 3

// probati bojenje sahovski
*/

Subtask #1
4.0 / 4.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 1492 KB Output is correct
2 Correct 1 ms 1492 KB Output is correct
3 Correct 17 ms 2516 KB Output is correct
4 Correct 13 ms 2516 KB Output is correct
5 Correct 9 ms 2516 KB Output is correct
6 Correct 11 ms 2520 KB Output is correct
7 Correct 17 ms 2528 KB Output is correct
8 Correct 4 ms 1748 KB Output is correct
9 Correct 1 ms 1492 KB Output is correct
10 Correct 3 ms 1748 KB Output is correct

Subtask #2
0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 1492 KB Output is correct
2 Correct 1 ms 1492 KB Output is correct
3 Correct 17 ms 2516 KB Output is correct
4 Correct 13 ms 2516 KB Output is correct
5 Correct 9 ms 2516 KB Output is correct
6 Correct 11 ms 2520 KB Output is correct
7 Correct 17 ms 2528 KB Output is correct
8 Correct 4 ms 1748 KB Output is correct
9 Correct 1 ms 1492 KB Output is correct
10 Correct 3 ms 1748 KB Output is correct
11 Correct 11 ms 2580 KB Output is correct
12 Correct 9 ms 2516 KB Output is correct
13 Correct 1 ms 1492 KB Output is correct
14 Correct 13 ms 2516 KB Output is correct
15 Correct 1 ms 1492 KB Output is correct
16 Correct 12 ms 2588 KB Output is correct
17 Correct 1 ms 1492 KB Output is correct
18 Correct 13 ms 2528 KB Output is correct
19 Correct 4 ms 1748 KB Output is correct
20 Correct 9 ms 2132 KB Output is correct
21 Correct 9 ms 2120 KB Output is correct
22 Correct 3 ms 1748 KB Output is correct
23 Correct 23 ms 2696 KB Output is correct
24 Correct 3 ms 1748 KB Output is correct
25 Correct 19 ms 2728 KB Output is correct
26 Correct 19 ms 2640 KB Output is correct
27 Correct 17 ms 2516 KB Output is correct
28 Correct 17 ms 2552 KB Output is correct
29 Correct 16 ms 2552 KB Output is correct
30 Incorrect 18 ms 2772 KB Output isn't correct
31 Halted 0 ms 0 KB -

Subtask #3
23.0 / 23.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 1748 KB Output is correct
2 Correct 2 ms 1512 KB Output is correct
3 Correct 1 ms 1492 KB Output is correct
4 Correct 1 ms 1492 KB Output is correct
5 Correct 1 ms 1492 KB Output is correct
6 Correct 1 ms 1492 KB Output is correct
7 Correct 2 ms 1492 KB Output is correct
8 Correct 1 ms 1492 KB Output is correct
9 Correct 1 ms 1492 KB Output is correct
10 Correct 1 ms 1492 KB Output is correct
11 Correct 1806 ms 36176 KB Output is correct
12 Correct 2 ms 1540 KB Output is correct
13 Correct 1776 ms 36176 KB Output is correct
14 Correct 2 ms 1492 KB Output is correct
15 Correct 1772 ms 36112 KB Output is correct
16 Correct 1830 ms 36172 KB Output is correct
17 Correct 1906 ms 36172 KB Output is correct
18 Correct 1931 ms 36176 KB Output is correct

Subtask #4
0 / 38.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 1492 KB Output is correct
2 Correct 1 ms 1492 KB Output is correct
3 Correct 17 ms 2516 KB Output is correct
4 Correct 13 ms 2516 KB Output is correct
5 Correct 9 ms 2516 KB Output is correct
6 Correct 11 ms 2520 KB Output is correct
7 Correct 17 ms 2528 KB Output is correct
8 Correct 4 ms 1748 KB Output is correct
9 Correct 1 ms 1492 KB Output is correct
10 Correct 3 ms 1748 KB Output is correct
11 Correct 11 ms 2580 KB Output is correct
12 Correct 9 ms 2516 KB Output is correct
13 Correct 1 ms 1492 KB Output is correct
14 Correct 13 ms 2516 KB Output is correct
15 Correct 1 ms 1492 KB Output is correct
16 Correct 12 ms 2588 KB Output is correct
17 Correct 1 ms 1492 KB Output is correct
18 Correct 13 ms 2528 KB Output is correct
19 Correct 4 ms 1748 KB Output is correct
20 Correct 9 ms 2132 KB Output is correct
21 Correct 9 ms 2120 KB Output is correct
22 Correct 3 ms 1748 KB Output is correct
23 Correct 23 ms 2696 KB Output is correct
24 Correct 3 ms 1748 KB Output is correct
25 Correct 19 ms 2728 KB Output is correct
26 Correct 19 ms 2640 KB Output is correct
27 Correct 17 ms 2516 KB Output is correct
28 Correct 17 ms 2552 KB Output is correct
29 Correct 16 ms 2552 KB Output is correct
30 Incorrect 18 ms 2772 KB Output isn't correct
31 Halted 0 ms 0 KB -

Subtask #5
0 / 23.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 1492 KB Output is correct
2 Correct 1 ms 1492 KB Output is correct
3 Correct 17 ms 2516 KB Output is correct
4 Correct 13 ms 2516 KB Output is correct
5 Correct 9 ms 2516 KB Output is correct
6 Correct 11 ms 2520 KB Output is correct
7 Correct 17 ms 2528 KB Output is correct
8 Correct 4 ms 1748 KB Output is correct
9 Correct 1 ms 1492 KB Output is correct
10 Correct 3 ms 1748 KB Output is correct
11 Correct 11 ms 2580 KB Output is correct
12 Correct 9 ms 2516 KB Output is correct
13 Correct 1 ms 1492 KB Output is correct
14 Correct 13 ms 2516 KB Output is correct
15 Correct 1 ms 1492 KB Output is correct
16 Correct 12 ms 2588 KB Output is correct
17 Correct 1 ms 1492 KB Output is correct
18 Correct 13 ms 2528 KB Output is correct
19 Correct 4 ms 1748 KB Output is correct
20 Correct 9 ms 2132 KB Output is correct
21 Correct 9 ms 2120 KB Output is correct
22 Correct 3 ms 1748 KB Output is correct
23 Correct 23 ms 2696 KB Output is correct
24 Correct 3 ms 1748 KB Output is correct
25 Correct 19 ms 2728 KB Output is correct
26 Correct 19 ms 2640 KB Output is correct
27 Correct 17 ms 2516 KB Output is correct
28 Correct 17 ms 2552 KB Output is correct
29 Correct 16 ms 2552 KB Output is correct
30 Incorrect 18 ms 2772 KB Output isn't correct
31 Halted 0 ms 0 KB -