oj.uz

Submission #591186

# Submission time Handle Problem Language Result Execution time Memory
591186 2022-07-07T01:22:01 Z SirCovidThe19th Connecting Supertrees (IOI20_supertrees) C++17
100 / 100
 230 ms 24104 KB 
#include <bits/stdc++.h>
#include "supertrees.h"
using namespace std;

#define FOR(i, x, y) for (int i = x; i < y; i++)

int construct(vector<vector<int>> p){
    int n = p.size();
    FOR(i, 0, n) FOR(j, 0, n) if (p[i][j] == 3) return 0;

    vector<vector<int>> ans(n, vector<int>(n, 0));
    bool vis[n] = {}; 
    int par[n]; iota(par, par + n, 0);

    function<int(int)> get = [&](int i){
        return i == par[i] ? i : par[i] = get(par[i]);
    };
    auto merge = [&](int a, int b){
        par[get(a)] = get(b);
    };
    FOR(src, 0, n) if (!vis[src]){
        bool incmp[n] = {}; vector<int> cmp; 
        FOR(i, 0, n) if (p[src][i])
            cmp.push_back(i), incmp[i] = 1;
    
        for (int i : cmp) for (int j : cmp) 
            if (p[i][j] == 1) merge(i, j);
            
        for (int i : cmp){ //check
            if (vis[i]) return 0;
            FOR(j, 0, n)
                if (p[i][j] and !incmp[j]) return 0;
            for (int j : cmp)
                if (!((get(i) == get(j) and p[i][j] == 1) or (get(i) != get(j) and p[i][j] == 2)))
                    return 0;
        }
        for (int i : cmp) vis[i] = 1;

        bool use[n] = {}; vector<int> head;
        for (int i : cmp){
            int c = get(i);
            if (!use[c]) head.push_back(c), use[c] = 1;
            if (i != c) ans[i][c] = ans[c][i] = 1;
        }
        FOR(i, 0, head.size()){
            int a = head[i];
            int b = head[(i + 1) % head.size()];
            if (a != b) ans[a][b] = ans[b][a] = 1;
        }
        if (head.size() == 2) return 0; //cannot have cycle of length 2
    }
    build(ans);
    return 1;
}

Compilation message

supertrees.cpp: In function 'int construct(std::vector<std::vector<int> >)':
supertrees.cpp:5:40: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
    5 | #define FOR(i, x, y) for (int i = x; i < y; i++)
......
   45 |         FOR(i, 0, head.size()){
      |             ~~~~~~~~~~~~~~~~~           
supertrees.cpp:45:9: note: in expansion of macro 'FOR'
   45 |         FOR(i, 0, head.size()){
      |         ^~~

Subtask #1
11.0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 212 KB Output is correct
2 Correct 0 ms 212 KB Output is correct
3 Correct 1 ms 212 KB Output is correct
4 Correct 0 ms 212 KB Output is correct
5 Correct 0 ms 212 KB Output is correct
6 Correct 11 ms 1108 KB Output is correct
7 Correct 230 ms 22072 KB Output is correct

Subtask #2
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 212 KB Output is correct
2 Correct 0 ms 212 KB Output is correct
3 Correct 1 ms 212 KB Output is correct
4 Correct 0 ms 212 KB Output is correct
5 Correct 0 ms 212 KB Output is correct
6 Correct 11 ms 1108 KB Output is correct
7 Correct 230 ms 22072 KB Output is correct
8 Correct 0 ms 212 KB Output is correct
9 Correct 0 ms 212 KB Output is correct
10 Correct 0 ms 212 KB Output is correct
11 Correct 0 ms 212 KB Output is correct
12 Correct 7 ms 1108 KB Output is correct
13 Correct 191 ms 21968 KB Output is correct
14 Correct 0 ms 212 KB Output is correct
15 Correct 0 ms 212 KB Output is correct
16 Correct 4 ms 724 KB Output is correct
17 Correct 94 ms 12168 KB Output is correct
18 Correct 1 ms 212 KB Output is correct
19 Correct 0 ms 212 KB Output is correct
20 Correct 47 ms 5772 KB Output is correct
21 Correct 180 ms 22032 KB Output is correct
22 Correct 160 ms 22020 KB Output is correct
23 Correct 199 ms 22076 KB Output is correct
24 Correct 170 ms 22020 KB Output is correct
25 Correct 70 ms 12048 KB Output is correct
26 Correct 66 ms 12108 KB Output is correct
27 Correct 214 ms 22032 KB Output is correct
28 Correct 172 ms 22052 KB Output is correct

Subtask #3
19.0 / 19.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 1 ms 212 KB Output is correct
3 Correct 0 ms 212 KB Output is correct
4 Correct 0 ms 212 KB Output is correct
5 Correct 1 ms 300 KB Output is correct
6 Correct 1 ms 212 KB Output is correct
7 Correct 1 ms 296 KB Output is correct
8 Correct 8 ms 1212 KB Output is correct
9 Correct 170 ms 24104 KB Output is correct
10 Correct 0 ms 212 KB Output is correct
11 Correct 1 ms 296 KB Output is correct
12 Correct 8 ms 1204 KB Output is correct
13 Correct 180 ms 24012 KB Output is correct
14 Correct 1 ms 212 KB Output is correct
15 Correct 1 ms 300 KB Output is correct
16 Correct 4 ms 852 KB Output is correct
17 Correct 79 ms 14064 KB Output is correct
18 Correct 1 ms 340 KB Output is correct
19 Correct 1 ms 296 KB Output is correct
20 Correct 0 ms 300 KB Output is correct
21 Correct 42 ms 6136 KB Output is correct
22 Correct 171 ms 23904 KB Output is correct
23 Correct 163 ms 24012 KB Output is correct
24 Correct 185 ms 23920 KB Output is correct
25 Correct 67 ms 14072 KB Output is correct
26 Correct 71 ms 14080 KB Output is correct
27 Correct 160 ms 23932 KB Output is correct
28 Correct 194 ms 23924 KB Output is correct
29 Correct 67 ms 14072 KB Output is correct

Subtask #4
35.0 / 35.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 0 ms 212 KB Output is correct
3 Correct 0 ms 212 KB Output is correct
4 Correct 42 ms 5764 KB Output is correct
5 Correct 180 ms 22024 KB Output is correct
6 Correct 169 ms 22024 KB Output is correct
7 Correct 210 ms 22092 KB Output is correct
8 Correct 0 ms 212 KB Output is correct
9 Correct 42 ms 5648 KB Output is correct
10 Correct 163 ms 22036 KB Output is correct
11 Correct 166 ms 22020 KB Output is correct
12 Correct 178 ms 22024 KB Output is correct
13 Correct 1 ms 212 KB Output is correct
14 Correct 0 ms 212 KB Output is correct
15 Correct 0 ms 212 KB Output is correct
16 Correct 41 ms 5708 KB Output is correct
17 Correct 165 ms 21992 KB Output is correct
18 Correct 166 ms 22056 KB Output is correct
19 Correct 161 ms 21968 KB Output is correct
20 Correct 162 ms 22092 KB Output is correct

Subtask #5
21.0 / 21.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 212 KB Output is correct
2 Correct 0 ms 212 KB Output is correct
3 Correct 1 ms 212 KB Output is correct
4 Correct 0 ms 212 KB Output is correct
5 Correct 0 ms 212 KB Output is correct
6 Correct 11 ms 1108 KB Output is correct
7 Correct 230 ms 22072 KB Output is correct
8 Correct 0 ms 212 KB Output is correct
9 Correct 0 ms 212 KB Output is correct
10 Correct 0 ms 212 KB Output is correct
11 Correct 0 ms 212 KB Output is correct
12 Correct 7 ms 1108 KB Output is correct
13 Correct 191 ms 21968 KB Output is correct
14 Correct 0 ms 212 KB Output is correct
15 Correct 0 ms 212 KB Output is correct
16 Correct 4 ms 724 KB Output is correct
17 Correct 94 ms 12168 KB Output is correct
18 Correct 1 ms 212 KB Output is correct
19 Correct 0 ms 212 KB Output is correct
20 Correct 47 ms 5772 KB Output is correct
21 Correct 180 ms 22032 KB Output is correct
22 Correct 160 ms 22020 KB Output is correct
23 Correct 199 ms 22076 KB Output is correct
24 Correct 170 ms 22020 KB Output is correct
25 Correct 70 ms 12048 KB Output is correct
26 Correct 66 ms 12108 KB Output is correct
27 Correct 214 ms 22032 KB Output is correct
28 Correct 172 ms 22052 KB Output is correct
29 Correct 0 ms 212 KB Output is correct
30 Correct 1 ms 212 KB Output is correct
31 Correct 0 ms 212 KB Output is correct
32 Correct 0 ms 212 KB Output is correct
33 Correct 1 ms 300 KB Output is correct
34 Correct 1 ms 212 KB Output is correct
35 Correct 1 ms 296 KB Output is correct
36 Correct 8 ms 1212 KB Output is correct
37 Correct 170 ms 24104 KB Output is correct
38 Correct 0 ms 212 KB Output is correct
39 Correct 1 ms 296 KB Output is correct
40 Correct 8 ms 1204 KB Output is correct
41 Correct 180 ms 24012 KB Output is correct
42 Correct 1 ms 212 KB Output is correct
43 Correct 1 ms 300 KB Output is correct
44 Correct 4 ms 852 KB Output is correct
45 Correct 79 ms 14064 KB Output is correct
46 Correct 1 ms 340 KB Output is correct
47 Correct 1 ms 296 KB Output is correct
48 Correct 0 ms 300 KB Output is correct
49 Correct 42 ms 6136 KB Output is correct
50 Correct 171 ms 23904 KB Output is correct
51 Correct 163 ms 24012 KB Output is correct
52 Correct 185 ms 23920 KB Output is correct
53 Correct 67 ms 14072 KB Output is correct
54 Correct 71 ms 14080 KB Output is correct
55 Correct 160 ms 23932 KB Output is correct
56 Correct 194 ms 23924 KB Output is correct
57 Correct 67 ms 14072 KB Output is correct
58 Correct 1 ms 212 KB Output is correct
59 Correct 0 ms 212 KB Output is correct
60 Correct 3 ms 824 KB Output is correct
61 Correct 81 ms 14072 KB Output is correct
62 Correct 1 ms 212 KB Output is correct
63 Correct 0 ms 212 KB Output is correct
64 Correct 1 ms 212 KB Output is correct
65 Correct 43 ms 6264 KB Output is correct
66 Correct 70 ms 14028 KB Output is correct
67 Correct 79 ms 14068 KB Output is correct
68 Correct 66 ms 14072 KB Output is correct
69 Correct 66 ms 14084 KB Output is correct

Subtask #6
4.0 / 4.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 212 KB Output is correct
2 Correct 0 ms 212 KB Output is correct
3 Correct 1 ms 212 KB Output is correct
4 Correct 0 ms 212 KB Output is correct
5 Correct 0 ms 212 KB Output is correct
6 Correct 11 ms 1108 KB Output is correct
7 Correct 230 ms 22072 KB Output is correct
8 Correct 0 ms 212 KB Output is correct
9 Correct 0 ms 212 KB Output is correct
10 Correct 0 ms 212 KB Output is correct
11 Correct 0 ms 212 KB Output is correct
12 Correct 7 ms 1108 KB Output is correct
13 Correct 191 ms 21968 KB Output is correct
14 Correct 0 ms 212 KB Output is correct
15 Correct 0 ms 212 KB Output is correct
16 Correct 4 ms 724 KB Output is correct
17 Correct 94 ms 12168 KB Output is correct
18 Correct 1 ms 212 KB Output is correct
19 Correct 0 ms 212 KB Output is correct
20 Correct 47 ms 5772 KB Output is correct
21 Correct 180 ms 22032 KB Output is correct
22 Correct 160 ms 22020 KB Output is correct
23 Correct 199 ms 22076 KB Output is correct
24 Correct 170 ms 22020 KB Output is correct
25 Correct 70 ms 12048 KB Output is correct
26 Correct 66 ms 12108 KB Output is correct
27 Correct 214 ms 22032 KB Output is correct
28 Correct 172 ms 22052 KB Output is correct
29 Correct 0 ms 212 KB Output is correct
30 Correct 1 ms 212 KB Output is correct
31 Correct 0 ms 212 KB Output is correct
32 Correct 0 ms 212 KB Output is correct
33 Correct 1 ms 300 KB Output is correct
34 Correct 1 ms 212 KB Output is correct
35 Correct 1 ms 296 KB Output is correct
36 Correct 8 ms 1212 KB Output is correct
37 Correct 170 ms 24104 KB Output is correct
38 Correct 0 ms 212 KB Output is correct
39 Correct 1 ms 296 KB Output is correct
40 Correct 8 ms 1204 KB Output is correct
41 Correct 180 ms 24012 KB Output is correct
42 Correct 1 ms 212 KB Output is correct
43 Correct 1 ms 300 KB Output is correct
44 Correct 4 ms 852 KB Output is correct
45 Correct 79 ms 14064 KB Output is correct
46 Correct 1 ms 340 KB Output is correct
47 Correct 1 ms 296 KB Output is correct
48 Correct 0 ms 300 KB Output is correct
49 Correct 42 ms 6136 KB Output is correct
50 Correct 171 ms 23904 KB Output is correct
51 Correct 163 ms 24012 KB Output is correct
52 Correct 185 ms 23920 KB Output is correct
53 Correct 67 ms 14072 KB Output is correct
54 Correct 71 ms 14080 KB Output is correct
55 Correct 160 ms 23932 KB Output is correct
56 Correct 194 ms 23924 KB Output is correct
57 Correct 67 ms 14072 KB Output is correct
58 Correct 0 ms 212 KB Output is correct
59 Correct 0 ms 212 KB Output is correct
60 Correct 0 ms 212 KB Output is correct
61 Correct 42 ms 5764 KB Output is correct
62 Correct 180 ms 22024 KB Output is correct
63 Correct 169 ms 22024 KB Output is correct
64 Correct 210 ms 22092 KB Output is correct
65 Correct 0 ms 212 KB Output is correct
66 Correct 42 ms 5648 KB Output is correct
67 Correct 163 ms 22036 KB Output is correct
68 Correct 166 ms 22020 KB Output is correct
69 Correct 178 ms 22024 KB Output is correct
70 Correct 1 ms 212 KB Output is correct
71 Correct 0 ms 212 KB Output is correct
72 Correct 0 ms 212 KB Output is correct
73 Correct 41 ms 5708 KB Output is correct
74 Correct 165 ms 21992 KB Output is correct
75 Correct 166 ms 22056 KB Output is correct
76 Correct 161 ms 21968 KB Output is correct
77 Correct 162 ms 22092 KB Output is correct
78 Correct 1 ms 212 KB Output is correct
79 Correct 0 ms 212 KB Output is correct
80 Correct 3 ms 824 KB Output is correct
81 Correct 81 ms 14072 KB Output is correct
82 Correct 1 ms 212 KB Output is correct
83 Correct 0 ms 212 KB Output is correct
84 Correct 1 ms 212 KB Output is correct
85 Correct 43 ms 6264 KB Output is correct
86 Correct 70 ms 14028 KB Output is correct
87 Correct 79 ms 14068 KB Output is correct
88 Correct 66 ms 14072 KB Output is correct
89 Correct 66 ms 14084 KB Output is correct
90 Correct 0 ms 212 KB Output is correct
91 Correct 1 ms 212 KB Output is correct
92 Correct 4 ms 692 KB Output is correct
93 Correct 69 ms 10100 KB Output is correct
94 Correct 1 ms 212 KB Output is correct
95 Correct 0 ms 212 KB Output is correct
96 Correct 0 ms 212 KB Output is correct
97 Correct 19 ms 2772 KB Output is correct
98 Correct 67 ms 10060 KB Output is correct
99 Correct 66 ms 10104 KB Output is correct
100 Correct 65 ms 10060 KB Output is correct
101 Correct 63 ms 10032 KB Output is correct
102 Correct 65 ms 10116 KB Output is correct
103 Correct 66 ms 10108 KB Output is correct
104 Correct 65 ms 10100 KB Output is correct
105 Correct 71 ms 10044 KB Output is correct