oj.uz

Submission #948276

# Submission time Handle Problem Language Result Execution time Memory
948276 2024-03-18T02:57:52 Z steveonalex Connecting Supertrees (IOI20_supertrees) C++14
96 / 100
 151 ms 24360 KB 
#include <bits/stdc++.h>
#include "supertrees.h"
 
using namespace std;
 
typedef long long ll;
typedef unsigned long long ull;
 
#define MASK(i) (1ULL << (i))
#define GETBIT(mask, i) (((mask) >> (i)) & 1)
#define ALL(v) (v).begin(), (v).end()
 
ll max(ll a, ll b){return (a > b) ? a : b;}
ll min(ll a, ll b){return (a < b) ? a : b;}
 
ll LASTBIT(ll mask){return (mask) & (-mask);}
int pop_cnt(ll mask){return __builtin_popcountll(mask);}
int ctz(ll mask){return __builtin_ctzll(mask);}
int logOf(ll mask){return 63 - __builtin_clzll(mask);}
 
mt19937_64 rng(chrono::high_resolution_clock::now().time_since_epoch().count());
ll rngesus(ll l, ll r){return l + (ull) rng() % (r - l + 1);}
 
template <class T1, class T2>
    bool maximize(T1 &a, T2 b){
        if (a < b) {a = b; return true;}
        return false;
    }
 
template <class T1, class T2>
    bool minimize(T1 &a, T2 b){
        if (a > b) {a = b; return true;}
        return false;
    }
 
template <class T>
    void printArr(T& container, string separator = " ", string finish = "\n", ostream &out = cout){
        for(auto item: container) out << item << separator;
        out << finish;
    }
 
template <class T>
    void remove_dup(vector<T> &a){
        sort(ALL(a));
        a.resize(unique(ALL(a)) - a.begin());
    }

struct DSU{
    int n;
    vector<int> parent, sz;

    DSU(int _n){
        n = _n;
        parent.resize(n); sz.resize(n, 1);
        for(int i = 0; i<n; ++i) parent[i] = i;
    }

    int find_set(int u){return (u == parent[u]) ? u : (parent[u] = find_set(parent[u]));}
    bool same_set(int u, int v){return find_set(u) == find_set(v);}

    bool join_set(int u, int v){
        u = find_set(u), v = find_set(v);
        if (u != v){
            if (sz[u] < sz[v]) swap(u, v);
            parent[v] = u;
            sz[u] += sz[v];
            return true;
        }
        return false;
    }
};

// void build(vector<vector<int>> p){
//     cout << "Answer: \n";
//     for(int i = 0; i<p.size(); ++i) printArr(p[i]);
// }

const int N = 1009;

vector<int> crew[N];

int construct(vector<vector<int>> p) {
    int n = p.size();
    vector<vector<int>> ans(n, vector<int>(n));

    for(int i = 0; i<n; ++i) crew[i].clear();

    DSU chode(n);
    for(int i = 0; i<n; ++i) for(int j = i+1; j<n; ++j) if (p[i][j]) chode.join_set(i, j);
    for(int i = 0; i<n; ++i) for(int j = i+1; j<n; ++j) if (p[i][j] == 0 && chode.same_set(i, j)) return 0; 

    for(int i = 0; i<n; ++i) crew[chode.find_set(i)].push_back(i);

    DSU sigma(n);
    for(int i= 0; i<n; ++i) for(int j = i+1; j<n; ++j) if (p[i][j] == 1) sigma.join_set(i, j);

    for(int i = 0; i<n; ++i) if (crew[i].size()){
        vector<int> pos;
        for(int j: crew[i]) if (j != sigma.find_set(j)) {
            int k = sigma.find_set(j);
            ans[j][k] = ans[k][j] = 1;
        }
        else pos.push_back(j);

        if (pos.size() == 1) continue;
        if (pos.size() == 2) return 0;
        int m = pos.size();
        for(int x: pos) for(int y: crew[i]) if (x != y && x != sigma.find_set(y))
            if (p[x][y] != p[pos[0]][pos[1]]) return 0;
        int deg = p[pos[0]][pos[1]];
        if (pos.size() <= deg) return 0;
        for(int i = 0; i<m; ++i) {
            int j = (i + 1) % m;
            ans[pos[i]][pos[j]] = ans[pos[j]][pos[i]] = 1;
        }
        if (deg == 3){
            ans[pos[0]][pos[2]] = ans[pos[2]][pos[0]] = 1;
        }
    }

    build(ans);
    return 1;
}

 
// int main(void){
//     ios::sync_with_stdio(0); cin.tie(0); cout.tie(0);
//     construct({{1, 1, 2, 2}, {1, 1, 2, 2}, {2, 2, 1, 2}, {2, 2, 2, 1}});
//     return 0;
// }

Compilation message

supertrees.cpp: In function 'int construct(std::vector<std::vector<int> >)':
supertrees.cpp:111:24: warning: comparison of integer expressions of different signedness: 'std::vector<int>::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare]
  111 |         if (pos.size() <= deg) return 0;
      |             ~~~~~~~~~~~^~~~~~

Subtask #1
11.0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 1 ms 344 KB Output is correct
5 Correct 0 ms 344 KB Output is correct
6 Correct 7 ms 1136 KB Output is correct
7 Correct 150 ms 22104 KB Output is correct

Subtask #2
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 1 ms 344 KB Output is correct
5 Correct 0 ms 344 KB Output is correct
6 Correct 7 ms 1136 KB Output is correct
7 Correct 150 ms 22104 KB Output is correct
8 Correct 0 ms 344 KB Output is correct
9 Correct 1 ms 348 KB Output is correct
10 Correct 0 ms 348 KB Output is correct
11 Correct 0 ms 348 KB Output is correct
12 Correct 8 ms 1324 KB Output is correct
13 Correct 139 ms 22208 KB Output is correct
14 Correct 1 ms 348 KB Output is correct
15 Correct 0 ms 348 KB Output is correct
16 Correct 4 ms 860 KB Output is correct
17 Correct 63 ms 12116 KB Output is correct
18 Correct 1 ms 348 KB Output is correct
19 Correct 0 ms 348 KB Output is correct
20 Correct 39 ms 5796 KB Output is correct
21 Correct 144 ms 22200 KB Output is correct
22 Correct 142 ms 22048 KB Output is correct
23 Correct 145 ms 22052 KB Output is correct
24 Correct 151 ms 22380 KB Output is correct
25 Correct 58 ms 12112 KB Output is correct
26 Correct 59 ms 12084 KB Output is correct
27 Correct 145 ms 21992 KB Output is correct
28 Correct 142 ms 22100 KB Output is correct

Subtask #3
19.0 / 19.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 348 KB Output is correct
2 Correct 1 ms 344 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 1 ms 348 KB Output is correct
6 Correct 0 ms 348 KB Output is correct
7 Correct 0 ms 348 KB Output is correct
8 Correct 6 ms 1176 KB Output is correct
9 Correct 145 ms 22184 KB Output is correct
10 Correct 0 ms 348 KB Output is correct
11 Correct 0 ms 348 KB Output is correct
12 Correct 7 ms 1116 KB Output is correct
13 Correct 145 ms 22052 KB Output is correct
14 Correct 0 ms 348 KB Output is correct
15 Correct 0 ms 348 KB Output is correct
16 Correct 3 ms 860 KB Output is correct
17 Correct 63 ms 12176 KB Output is correct
18 Correct 0 ms 344 KB Output is correct
19 Correct 1 ms 344 KB Output is correct
20 Correct 0 ms 344 KB Output is correct
21 Correct 36 ms 5764 KB Output is correct
22 Correct 143 ms 22100 KB Output is correct
23 Correct 145 ms 22096 KB Output is correct
24 Correct 149 ms 22100 KB Output is correct
25 Correct 57 ms 12320 KB Output is correct
26 Correct 70 ms 12116 KB Output is correct
27 Correct 142 ms 22096 KB Output is correct
28 Correct 150 ms 22224 KB Output is correct
29 Correct 71 ms 12112 KB Output is correct

Subtask #4
35.0 / 35.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 344 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 36 ms 5800 KB Output is correct
5 Correct 141 ms 22036 KB Output is correct
6 Correct 142 ms 22100 KB Output is correct
7 Correct 144 ms 22068 KB Output is correct
8 Correct 0 ms 348 KB Output is correct
9 Correct 41 ms 5712 KB Output is correct
10 Correct 143 ms 22052 KB Output is correct
11 Correct 143 ms 22100 KB Output is correct
12 Correct 145 ms 21996 KB Output is correct
13 Correct 1 ms 344 KB Output is correct
14 Correct 0 ms 348 KB Output is correct
15 Correct 0 ms 348 KB Output is correct
16 Correct 36 ms 5924 KB Output is correct
17 Correct 147 ms 24080 KB Output is correct
18 Correct 142 ms 24144 KB Output is correct
19 Correct 145 ms 24360 KB Output is correct
20 Correct 141 ms 24144 KB Output is correct

Subtask #5
21.0 / 21.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 1 ms 344 KB Output is correct
5 Correct 0 ms 344 KB Output is correct
6 Correct 7 ms 1136 KB Output is correct
7 Correct 150 ms 22104 KB Output is correct
8 Correct 0 ms 344 KB Output is correct
9 Correct 1 ms 348 KB Output is correct
10 Correct 0 ms 348 KB Output is correct
11 Correct 0 ms 348 KB Output is correct
12 Correct 8 ms 1324 KB Output is correct
13 Correct 139 ms 22208 KB Output is correct
14 Correct 1 ms 348 KB Output is correct
15 Correct 0 ms 348 KB Output is correct
16 Correct 4 ms 860 KB Output is correct
17 Correct 63 ms 12116 KB Output is correct
18 Correct 1 ms 348 KB Output is correct
19 Correct 0 ms 348 KB Output is correct
20 Correct 39 ms 5796 KB Output is correct
21 Correct 144 ms 22200 KB Output is correct
22 Correct 142 ms 22048 KB Output is correct
23 Correct 145 ms 22052 KB Output is correct
24 Correct 151 ms 22380 KB Output is correct
25 Correct 58 ms 12112 KB Output is correct
26 Correct 59 ms 12084 KB Output is correct
27 Correct 145 ms 21992 KB Output is correct
28 Correct 142 ms 22100 KB Output is correct
29 Correct 1 ms 348 KB Output is correct
30 Correct 1 ms 344 KB Output is correct
31 Correct 0 ms 348 KB Output is correct
32 Correct 0 ms 348 KB Output is correct
33 Correct 1 ms 348 KB Output is correct
34 Correct 0 ms 348 KB Output is correct
35 Correct 0 ms 348 KB Output is correct
36 Correct 6 ms 1176 KB Output is correct
37 Correct 145 ms 22184 KB Output is correct
38 Correct 0 ms 348 KB Output is correct
39 Correct 0 ms 348 KB Output is correct
40 Correct 7 ms 1116 KB Output is correct
41 Correct 145 ms 22052 KB Output is correct
42 Correct 0 ms 348 KB Output is correct
43 Correct 0 ms 348 KB Output is correct
44 Correct 3 ms 860 KB Output is correct
45 Correct 63 ms 12176 KB Output is correct
46 Correct 0 ms 344 KB Output is correct
47 Correct 1 ms 344 KB Output is correct
48 Correct 0 ms 344 KB Output is correct
49 Correct 36 ms 5764 KB Output is correct
50 Correct 143 ms 22100 KB Output is correct
51 Correct 145 ms 22096 KB Output is correct
52 Correct 149 ms 22100 KB Output is correct
53 Correct 57 ms 12320 KB Output is correct
54 Correct 70 ms 12116 KB Output is correct
55 Correct 142 ms 22096 KB Output is correct
56 Correct 150 ms 22224 KB Output is correct
57 Correct 71 ms 12112 KB Output is correct
58 Correct 0 ms 344 KB Output is correct
59 Correct 1 ms 348 KB Output is correct
60 Correct 3 ms 860 KB Output is correct
61 Correct 61 ms 12304 KB Output is correct
62 Correct 1 ms 348 KB Output is correct
63 Correct 0 ms 348 KB Output is correct
64 Correct 1 ms 348 KB Output is correct
65 Correct 36 ms 5808 KB Output is correct
66 Correct 59 ms 14312 KB Output is correct
67 Correct 59 ms 14164 KB Output is correct
68 Correct 64 ms 14160 KB Output is correct
69 Correct 59 ms 14160 KB Output is correct

Subtask #6
0 / 4.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 1 ms 344 KB Output is correct
5 Correct 0 ms 344 KB Output is correct
6 Correct 7 ms 1136 KB Output is correct
7 Correct 150 ms 22104 KB Output is correct
8 Correct 0 ms 344 KB Output is correct
9 Correct 1 ms 348 KB Output is correct
10 Correct 0 ms 348 KB Output is correct
11 Correct 0 ms 348 KB Output is correct
12 Correct 8 ms 1324 KB Output is correct
13 Correct 139 ms 22208 KB Output is correct
14 Correct 1 ms 348 KB Output is correct
15 Correct 0 ms 348 KB Output is correct
16 Correct 4 ms 860 KB Output is correct
17 Correct 63 ms 12116 KB Output is correct
18 Correct 1 ms 348 KB Output is correct
19 Correct 0 ms 348 KB Output is correct
20 Correct 39 ms 5796 KB Output is correct
21 Correct 144 ms 22200 KB Output is correct
22 Correct 142 ms 22048 KB Output is correct
23 Correct 145 ms 22052 KB Output is correct
24 Correct 151 ms 22380 KB Output is correct
25 Correct 58 ms 12112 KB Output is correct
26 Correct 59 ms 12084 KB Output is correct
27 Correct 145 ms 21992 KB Output is correct
28 Correct 142 ms 22100 KB Output is correct
29 Correct 1 ms 348 KB Output is correct
30 Correct 1 ms 344 KB Output is correct
31 Correct 0 ms 348 KB Output is correct
32 Correct 0 ms 348 KB Output is correct
33 Correct 1 ms 348 KB Output is correct
34 Correct 0 ms 348 KB Output is correct
35 Correct 0 ms 348 KB Output is correct
36 Correct 6 ms 1176 KB Output is correct
37 Correct 145 ms 22184 KB Output is correct
38 Correct 0 ms 348 KB Output is correct
39 Correct 0 ms 348 KB Output is correct
40 Correct 7 ms 1116 KB Output is correct
41 Correct 145 ms 22052 KB Output is correct
42 Correct 0 ms 348 KB Output is correct
43 Correct 0 ms 348 KB Output is correct
44 Correct 3 ms 860 KB Output is correct
45 Correct 63 ms 12176 KB Output is correct
46 Correct 0 ms 344 KB Output is correct
47 Correct 1 ms 344 KB Output is correct
48 Correct 0 ms 344 KB Output is correct
49 Correct 36 ms 5764 KB Output is correct
50 Correct 143 ms 22100 KB Output is correct
51 Correct 145 ms 22096 KB Output is correct
52 Correct 149 ms 22100 KB Output is correct
53 Correct 57 ms 12320 KB Output is correct
54 Correct 70 ms 12116 KB Output is correct
55 Correct 142 ms 22096 KB Output is correct
56 Correct 150 ms 22224 KB Output is correct
57 Correct 71 ms 12112 KB Output is correct
58 Correct 0 ms 344 KB Output is correct
59 Correct 0 ms 348 KB Output is correct
60 Correct 0 ms 348 KB Output is correct
61 Correct 36 ms 5800 KB Output is correct
62 Correct 141 ms 22036 KB Output is correct
63 Correct 142 ms 22100 KB Output is correct
64 Correct 144 ms 22068 KB Output is correct
65 Correct 0 ms 348 KB Output is correct
66 Correct 41 ms 5712 KB Output is correct
67 Correct 143 ms 22052 KB Output is correct
68 Correct 143 ms 22100 KB Output is correct
69 Correct 145 ms 21996 KB Output is correct
70 Correct 1 ms 344 KB Output is correct
71 Correct 0 ms 348 KB Output is correct
72 Correct 0 ms 348 KB Output is correct
73 Correct 36 ms 5924 KB Output is correct
74 Correct 147 ms 24080 KB Output is correct
75 Correct 142 ms 24144 KB Output is correct
76 Correct 145 ms 24360 KB Output is correct
77 Correct 141 ms 24144 KB Output is correct
78 Correct 0 ms 344 KB Output is correct
79 Correct 1 ms 348 KB Output is correct
80 Correct 3 ms 860 KB Output is correct
81 Correct 61 ms 12304 KB Output is correct
82 Correct 1 ms 348 KB Output is correct
83 Correct 0 ms 348 KB Output is correct
84 Correct 1 ms 348 KB Output is correct
85 Correct 36 ms 5808 KB Output is correct
86 Correct 59 ms 14312 KB Output is correct
87 Correct 59 ms 14164 KB Output is correct
88 Correct 64 ms 14160 KB Output is correct
89 Correct 59 ms 14160 KB Output is correct
90 Correct 0 ms 348 KB Output is correct
91 Correct 0 ms 348 KB Output is correct
92 Correct 3 ms 860 KB Output is correct
93 Correct 61 ms 14348 KB Output is correct
94 Correct 1 ms 344 KB Output is correct
95 Correct 0 ms 348 KB Output is correct
96 Correct 0 ms 348 KB Output is correct
97 Correct 14 ms 3928 KB Output is correct
98 Correct 58 ms 14232 KB Output is correct
99 Correct 60 ms 14160 KB Output is correct
100 Correct 65 ms 14064 KB Output is correct
101 Correct 62 ms 14228 KB Output is correct
102 Incorrect 143 ms 23964 KB Answer gives possible 1 while actual possible 0
103 Halted 0 ms 0 KB -