oj.uz

Submission #567339

# Submission time Handle Problem Language Result Execution time Memory
567339 2022-05-23T10:41:05 Z SavicS Political Development (BOI17_politicaldevelopment) C++17
27 / 100
 1926 ms 36496 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 << 11)];
int msk[(1 << 11)];

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 > 11){
            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 2 ms 1492 KB Output is correct
3 Correct 18 ms 2596 KB Output is correct
4 Correct 13 ms 2588 KB Output is correct
5 Correct 10 ms 2640 KB Output is correct
6 Correct 16 ms 2536 KB Output is correct
7 Correct 13 ms 2656 KB Output is correct
8 Correct 4 ms 1748 KB Output is correct
9 Correct 2 ms 1508 KB Output is correct
10 Correct 5 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 2 ms 1492 KB Output is correct
3 Correct 18 ms 2596 KB Output is correct
4 Correct 13 ms 2588 KB Output is correct
5 Correct 10 ms 2640 KB Output is correct
6 Correct 16 ms 2536 KB Output is correct
7 Correct 13 ms 2656 KB Output is correct
8 Correct 4 ms 1748 KB Output is correct
9 Correct 2 ms 1508 KB Output is correct
10 Correct 5 ms 1748 KB Output is correct
11 Correct 10 ms 2640 KB Output is correct
12 Correct 10 ms 2612 KB Output is correct
13 Correct 1 ms 1492 KB Output is correct
14 Correct 10 ms 2544 KB Output is correct
15 Correct 2 ms 1420 KB Output is correct
16 Correct 13 ms 2644 KB Output is correct
17 Correct 1 ms 1492 KB Output is correct
18 Correct 18 ms 2644 KB Output is correct
19 Correct 3 ms 1748 KB Output is correct
20 Correct 7 ms 2156 KB Output is correct
21 Correct 10 ms 2260 KB Output is correct
22 Correct 4 ms 1748 KB Output is correct
23 Correct 18 ms 2772 KB Output is correct
24 Correct 3 ms 1748 KB Output is correct
25 Correct 19 ms 2772 KB Output is correct
26 Correct 29 ms 2632 KB Output is correct
27 Correct 15 ms 2516 KB Output is correct
28 Correct 17 ms 2644 KB Output is correct
29 Correct 15 ms 2620 KB Output is correct
30 Incorrect 19 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 1492 KB Output is correct
3 Correct 2 ms 1492 KB Output is correct
4 Correct 2 ms 1492 KB Output is correct
5 Correct 2 ms 1504 KB Output is correct
6 Correct 1 ms 1492 KB Output is correct
7 Correct 2 ms 1492 KB Output is correct
8 Correct 2 ms 1492 KB Output is correct
9 Correct 2 ms 1492 KB Output is correct
10 Correct 2 ms 1492 KB Output is correct
11 Correct 1926 ms 36436 KB Output is correct
12 Correct 2 ms 1492 KB Output is correct
13 Correct 1731 ms 36428 KB Output is correct
14 Correct 2 ms 1492 KB Output is correct
15 Correct 1615 ms 36396 KB Output is correct
16 Correct 1587 ms 36436 KB Output is correct
17 Correct 1752 ms 36440 KB Output is correct
18 Correct 1786 ms 36496 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 2 ms 1492 KB Output is correct
3 Correct 18 ms 2596 KB Output is correct
4 Correct 13 ms 2588 KB Output is correct
5 Correct 10 ms 2640 KB Output is correct
6 Correct 16 ms 2536 KB Output is correct
7 Correct 13 ms 2656 KB Output is correct
8 Correct 4 ms 1748 KB Output is correct
9 Correct 2 ms 1508 KB Output is correct
10 Correct 5 ms 1748 KB Output is correct
11 Correct 10 ms 2640 KB Output is correct
12 Correct 10 ms 2612 KB Output is correct
13 Correct 1 ms 1492 KB Output is correct
14 Correct 10 ms 2544 KB Output is correct
15 Correct 2 ms 1420 KB Output is correct
16 Correct 13 ms 2644 KB Output is correct
17 Correct 1 ms 1492 KB Output is correct
18 Correct 18 ms 2644 KB Output is correct
19 Correct 3 ms 1748 KB Output is correct
20 Correct 7 ms 2156 KB Output is correct
21 Correct 10 ms 2260 KB Output is correct
22 Correct 4 ms 1748 KB Output is correct
23 Correct 18 ms 2772 KB Output is correct
24 Correct 3 ms 1748 KB Output is correct
25 Correct 19 ms 2772 KB Output is correct
26 Correct 29 ms 2632 KB Output is correct
27 Correct 15 ms 2516 KB Output is correct
28 Correct 17 ms 2644 KB Output is correct
29 Correct 15 ms 2620 KB Output is correct
30 Incorrect 19 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 2 ms 1492 KB Output is correct
3 Correct 18 ms 2596 KB Output is correct
4 Correct 13 ms 2588 KB Output is correct
5 Correct 10 ms 2640 KB Output is correct
6 Correct 16 ms 2536 KB Output is correct
7 Correct 13 ms 2656 KB Output is correct
8 Correct 4 ms 1748 KB Output is correct
9 Correct 2 ms 1508 KB Output is correct
10 Correct 5 ms 1748 KB Output is correct
11 Correct 10 ms 2640 KB Output is correct
12 Correct 10 ms 2612 KB Output is correct
13 Correct 1 ms 1492 KB Output is correct
14 Correct 10 ms 2544 KB Output is correct
15 Correct 2 ms 1420 KB Output is correct
16 Correct 13 ms 2644 KB Output is correct
17 Correct 1 ms 1492 KB Output is correct
18 Correct 18 ms 2644 KB Output is correct
19 Correct 3 ms 1748 KB Output is correct
20 Correct 7 ms 2156 KB Output is correct
21 Correct 10 ms 2260 KB Output is correct
22 Correct 4 ms 1748 KB Output is correct
23 Correct 18 ms 2772 KB Output is correct
24 Correct 3 ms 1748 KB Output is correct
25 Correct 19 ms 2772 KB Output is correct
26 Correct 29 ms 2632 KB Output is correct
27 Correct 15 ms 2516 KB Output is correct
28 Correct 17 ms 2644 KB Output is correct
29 Correct 15 ms 2620 KB Output is correct
30 Incorrect 19 ms 2772 KB Output isn't correct
31 Halted 0 ms 0 KB -