oj.uz

Submission #727973

# Submission time Handle Problem Language Result Execution time Memory
727973 2023-04-21T17:47:49 Z _martynas Political Development (BOI17_politicaldevelopment) C++11
100 / 100
 666 ms 314220 KB 
/*
"For any non-empty group of party members, there is always
at least one member of the group who disagrees with (strictly)
less than K of the other group members."
1. Apply this condition to all of the nodes ->
there is at least one node with degree < K
2. Apply condition to everything except the min degree
node and its edges -> again, there is at least one node with degree < K

*/
#include <bits/stdc++.h>

using namespace std;

using ll = long long;
using pii = pair<int, int>;
using pli = pair<ll, int>;
using pll = pair<ll, ll>;
using vi = vector<int>;
using vl = vector<ll>;

const int MOD = 1e9+7;

#define F first
#define S second
#define PB push_back
#define all(a) (a).begin(), (a).end()
#define rall(a) (a).rbegin(), (a).rend()

const int MXN = 50005;

int n, k;
int deg[MXN];
vi adj[MXN];
bool visited[MXN];
bitset<1LL*MXN*MXN> E;

int main() {
    cin >> n >> k;
    queue<int> Q;
    for(int i = 0; i < n; i++) {
        cin >> deg[i];
        for(int j = 0; j < deg[i]; j++) {
            int a; cin >> a; adj[i].PB(a);
            E[1LL*i*n+a] = 1;
        }
    }
    for(int i = 0; i < n; i++) if(deg[i] < k) Q.push(i);
    int mx = 1;
    while(!Q.empty()) {
        int a = Q.front(); Q.pop();
        visited[a] = true;
        vi arr;
        for(int b : adj[a]) if(!visited[b]) arr.PB(b);
        for(int mask = 0; mask < (1 << arr.size()); mask++) {
            bool ok = true;
            for(int i = 0; i < arr.size(); i++) {
                if(~mask & (1 << i)) continue;
                for(int j = 0; j < i; j++) {
                    if(~mask & (1 << j)) continue;
                    if(!E[1LL*arr[i]*n+arr[j]]) ok = false;
                }
            }
            if(ok) mx = max(mx, __builtin_popcount(mask)+1);
        }
        for(int b : adj[a]) {
            if(deg[b] == k) Q.push(b);
            deg[b]--;
        }
    }
    cout << mx << "\n";
    return 0;
}

/*



*/

Compilation message

politicaldevelopment.cpp: In function 'int main()':
politicaldevelopment.cpp:57:30: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   57 |             for(int i = 0; i < arr.size(); i++) {
      |                            ~~^~~~~~~~~~~~

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 1488 KB Output is correct
3 Correct 6 ms 4732 KB Output is correct
4 Correct 6 ms 4820 KB Output is correct
5 Correct 6 ms 4828 KB Output is correct
6 Correct 6 ms 4820 KB Output is correct
7 Correct 6 ms 4820 KB Output is correct
8 Correct 2 ms 1492 KB Output is correct
9 Correct 1 ms 1488 KB Output is correct
10 Correct 2 ms 1492 KB Output is correct

Subtask #2
12.0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 1492 KB Output is correct
2 Correct 1 ms 1488 KB Output is correct
3 Correct 6 ms 4732 KB Output is correct
4 Correct 6 ms 4820 KB Output is correct
5 Correct 6 ms 4828 KB Output is correct
6 Correct 6 ms 4820 KB Output is correct
7 Correct 6 ms 4820 KB Output is correct
8 Correct 2 ms 1492 KB Output is correct
9 Correct 1 ms 1488 KB Output is correct
10 Correct 2 ms 1492 KB Output is correct
11 Correct 6 ms 4820 KB Output is correct
12 Correct 9 ms 4820 KB Output is correct
13 Correct 1 ms 1492 KB Output is correct
14 Correct 5 ms 4724 KB Output is correct
15 Correct 1 ms 1492 KB Output is correct
16 Correct 6 ms 4744 KB Output is correct
17 Correct 1 ms 1492 KB Output is correct
18 Correct 6 ms 4820 KB Output is correct
19 Correct 2 ms 1492 KB Output is correct
20 Correct 6 ms 4692 KB Output is correct
21 Correct 4 ms 4692 KB Output is correct
22 Correct 2 ms 1492 KB Output is correct
23 Correct 8 ms 4700 KB Output is correct
24 Correct 2 ms 1492 KB Output is correct
25 Correct 9 ms 4820 KB Output is correct
26 Correct 7 ms 4692 KB Output is correct
27 Correct 6 ms 4700 KB Output is correct
28 Correct 7 ms 4692 KB Output is correct
29 Correct 7 ms 4692 KB Output is correct
30 Correct 7 ms 4712 KB Output is correct
31 Correct 7 ms 4732 KB Output is correct
32 Correct 7 ms 4832 KB Output is correct
33 Correct 7 ms 4692 KB Output is correct
34 Correct 8 ms 4772 KB Output is correct
35 Correct 5 ms 2388 KB Output is correct
36 Correct 4 ms 2392 KB Output is correct
37 Correct 4 ms 2388 KB Output is correct
38 Correct 3 ms 1748 KB Output is correct
39 Correct 2 ms 1748 KB Output is correct
40 Correct 10 ms 4820 KB Output is correct
41 Correct 3 ms 1756 KB Output is correct
42 Correct 10 ms 4820 KB Output is correct
43 Correct 10 ms 4820 KB Output is correct

Subtask #3
23.0 / 23.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 1492 KB Output is correct
2 Correct 2 ms 1492 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 1484 KB Output is correct
6 Correct 1 ms 1492 KB Output is correct
7 Correct 1 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 652 ms 314124 KB Output is correct
12 Correct 1 ms 1492 KB Output is correct
13 Correct 661 ms 314024 KB Output is correct
14 Correct 1 ms 1492 KB Output is correct
15 Correct 618 ms 314072 KB Output is correct
16 Correct 633 ms 314164 KB Output is correct
17 Correct 614 ms 314220 KB Output is correct
18 Correct 666 ms 314104 KB Output is correct

Subtask #4
38.0 / 38.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 1492 KB Output is correct
2 Correct 1 ms 1488 KB Output is correct
3 Correct 6 ms 4732 KB Output is correct
4 Correct 6 ms 4820 KB Output is correct
5 Correct 6 ms 4828 KB Output is correct
6 Correct 6 ms 4820 KB Output is correct
7 Correct 6 ms 4820 KB Output is correct
8 Correct 2 ms 1492 KB Output is correct
9 Correct 1 ms 1488 KB Output is correct
10 Correct 2 ms 1492 KB Output is correct
11 Correct 6 ms 4820 KB Output is correct
12 Correct 9 ms 4820 KB Output is correct
13 Correct 1 ms 1492 KB Output is correct
14 Correct 5 ms 4724 KB Output is correct
15 Correct 1 ms 1492 KB Output is correct
16 Correct 6 ms 4744 KB Output is correct
17 Correct 1 ms 1492 KB Output is correct
18 Correct 6 ms 4820 KB Output is correct
19 Correct 2 ms 1492 KB Output is correct
20 Correct 6 ms 4692 KB Output is correct
21 Correct 4 ms 4692 KB Output is correct
22 Correct 2 ms 1492 KB Output is correct
23 Correct 8 ms 4700 KB Output is correct
24 Correct 2 ms 1492 KB Output is correct
25 Correct 9 ms 4820 KB Output is correct
26 Correct 7 ms 4692 KB Output is correct
27 Correct 6 ms 4700 KB Output is correct
28 Correct 7 ms 4692 KB Output is correct
29 Correct 7 ms 4692 KB Output is correct
30 Correct 7 ms 4712 KB Output is correct
31 Correct 7 ms 4732 KB Output is correct
32 Correct 7 ms 4832 KB Output is correct
33 Correct 7 ms 4692 KB Output is correct
34 Correct 8 ms 4772 KB Output is correct
35 Correct 5 ms 2388 KB Output is correct
36 Correct 4 ms 2392 KB Output is correct
37 Correct 4 ms 2388 KB Output is correct
38 Correct 3 ms 1748 KB Output is correct
39 Correct 2 ms 1748 KB Output is correct
40 Correct 10 ms 4820 KB Output is correct
41 Correct 3 ms 1756 KB Output is correct
42 Correct 10 ms 4820 KB Output is correct
43 Correct 10 ms 4820 KB Output is correct
44 Correct 26 ms 4948 KB Output is correct
45 Correct 1 ms 1492 KB Output is correct
46 Correct 9 ms 4824 KB Output is correct
47 Correct 17 ms 5004 KB Output is correct
48 Correct 9 ms 4824 KB Output is correct
49 Correct 16 ms 5004 KB Output is correct
50 Correct 18 ms 5044 KB Output is correct
51 Correct 86 ms 5468 KB Output is correct
52 Correct 6 ms 4820 KB Output is correct
53 Correct 227 ms 5608 KB Output is correct
54 Correct 251 ms 5568 KB Output is correct
55 Correct 6 ms 4828 KB Output is correct
56 Correct 6 ms 4820 KB Output is correct
57 Correct 2 ms 1492 KB Output is correct
58 Correct 224 ms 5612 KB Output is correct
59 Correct 10 ms 4788 KB Output is correct
60 Correct 6 ms 4820 KB Output is correct
61 Correct 10 ms 4748 KB Output is correct
62 Correct 10 ms 4856 KB Output is correct
63 Correct 29 ms 4992 KB Output is correct
64 Correct 18 ms 4892 KB Output is correct
65 Correct 13 ms 4824 KB Output is correct
66 Correct 10 ms 4844 KB Output is correct
67 Correct 42 ms 5108 KB Output is correct
68 Correct 20 ms 4900 KB Output is correct
69 Correct 10 ms 4832 KB Output is correct
70 Correct 18 ms 4952 KB Output is correct
71 Correct 38 ms 5032 KB Output is correct
72 Correct 37 ms 5112 KB Output is correct
73 Correct 6 ms 4692 KB Output is correct
74 Correct 16 ms 4956 KB Output is correct
75 Correct 36 ms 5124 KB Output is correct
76 Correct 12 ms 4832 KB Output is correct
77 Correct 75 ms 5232 KB Output is correct
78 Correct 6 ms 4692 KB Output is correct
79 Correct 38 ms 2520 KB Output is correct
80 Correct 13 ms 4832 KB Output is correct
81 Correct 74 ms 5204 KB Output is correct
82 Correct 3 ms 1748 KB Output is correct
83 Correct 37 ms 2620 KB Output is correct
84 Correct 48 ms 5080 KB Output is correct
85 Correct 3 ms 1748 KB Output is correct
86 Correct 50 ms 5192 KB Output is correct

Subtask #5
23.0 / 23.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 1492 KB Output is correct
2 Correct 1 ms 1488 KB Output is correct
3 Correct 6 ms 4732 KB Output is correct
4 Correct 6 ms 4820 KB Output is correct
5 Correct 6 ms 4828 KB Output is correct
6 Correct 6 ms 4820 KB Output is correct
7 Correct 6 ms 4820 KB Output is correct
8 Correct 2 ms 1492 KB Output is correct
9 Correct 1 ms 1488 KB Output is correct
10 Correct 2 ms 1492 KB Output is correct
11 Correct 6 ms 4820 KB Output is correct
12 Correct 9 ms 4820 KB Output is correct
13 Correct 1 ms 1492 KB Output is correct
14 Correct 5 ms 4724 KB Output is correct
15 Correct 1 ms 1492 KB Output is correct
16 Correct 6 ms 4744 KB Output is correct
17 Correct 1 ms 1492 KB Output is correct
18 Correct 6 ms 4820 KB Output is correct
19 Correct 2 ms 1492 KB Output is correct
20 Correct 6 ms 4692 KB Output is correct
21 Correct 4 ms 4692 KB Output is correct
22 Correct 2 ms 1492 KB Output is correct
23 Correct 8 ms 4700 KB Output is correct
24 Correct 2 ms 1492 KB Output is correct
25 Correct 9 ms 4820 KB Output is correct
26 Correct 7 ms 4692 KB Output is correct
27 Correct 6 ms 4700 KB Output is correct
28 Correct 7 ms 4692 KB Output is correct
29 Correct 7 ms 4692 KB Output is correct
30 Correct 7 ms 4712 KB Output is correct
31 Correct 7 ms 4732 KB Output is correct
32 Correct 7 ms 4832 KB Output is correct
33 Correct 7 ms 4692 KB Output is correct
34 Correct 8 ms 4772 KB Output is correct
35 Correct 5 ms 2388 KB Output is correct
36 Correct 4 ms 2392 KB Output is correct
37 Correct 4 ms 2388 KB Output is correct
38 Correct 3 ms 1748 KB Output is correct
39 Correct 2 ms 1748 KB Output is correct
40 Correct 10 ms 4820 KB Output is correct
41 Correct 3 ms 1756 KB Output is correct
42 Correct 10 ms 4820 KB Output is correct
43 Correct 10 ms 4820 KB Output is correct
44 Correct 1 ms 1492 KB Output is correct
45 Correct 230 ms 306120 KB Output is correct
46 Correct 164 ms 277452 KB Output is correct
47 Correct 252 ms 304844 KB Output is correct
48 Correct 230 ms 306180 KB Output is correct
49 Correct 111 ms 204860 KB Output is correct
50 Correct 258 ms 312396 KB Output is correct
51 Correct 227 ms 304656 KB Output is correct
52 Correct 109 ms 191160 KB Output is correct
53 Correct 126 ms 204864 KB Output is correct
54 Correct 9 ms 2024 KB Output is correct
55 Correct 251 ms 312608 KB Output is correct
56 Correct 103 ms 190156 KB Output is correct
57 Correct 133 ms 192324 KB Output is correct
58 Correct 168 ms 291020 KB Output is correct
59 Correct 104 ms 190024 KB Output is correct
60 Correct 96 ms 189964 KB Output is correct
61 Correct 180 ms 291380 KB Output is correct
62 Correct 148 ms 262548 KB Output is correct
63 Correct 185 ms 285140 KB Output is correct
64 Correct 109 ms 190156 KB Output is correct
65 Correct 214 ms 296056 KB Output is correct
66 Correct 173 ms 262988 KB Output is correct
67 Correct 178 ms 285000 KB Output is correct
68 Correct 204 ms 293832 KB Output is correct
69 Correct 218 ms 294860 KB Output is correct
70 Correct 142 ms 263144 KB Output is correct
71 Correct 194 ms 294284 KB Output is correct
72 Correct 197 ms 276300 KB Output is correct
73 Correct 224 ms 307176 KB Output is correct
74 Correct 143 ms 262400 KB Output is correct
75 Correct 74 ms 79456 KB Output is correct
76 Correct 168 ms 268900 KB Output is correct
77 Correct 218 ms 307360 KB Output is correct
78 Correct 86 ms 79864 KB Output is correct
79 Correct 76 ms 79448 KB Output is correct
80 Correct 28 ms 21344 KB Output is correct
81 Correct 92 ms 79796 KB Output is correct
82 Correct 196 ms 302796 KB Output is correct
83 Correct 26 ms 21376 KB Output is correct
84 Correct 204 ms 302548 KB Output is correct