oj.uz

Submission #305104

# Submission time Handle Problem Language Result Execution time Memory
305104 2020-09-22T15:12:56 Z phathnv Connecting Supertrees (IOI20_supertrees) C++14
100 / 100
 256 ms 22264 KB 
#include <bits/stdc++.h>
#include "supertrees.h"

#define mp make_pair
#define X first
#define Y second
#define taskname " "

using namespace std;

typedef long long ll;
typedef pair <int, int> ii;

const int N = 1000;
const int base = 7;

struct _dsu{
    int root[N], rnk[N];
    void init(int n){
        for(int i = 0; i < n; i++){
            root[i] = i;
            rnk[i] = 0;
        }
    }
    int getRoot(int u){
        if (u == root[u])
            return u;
        root[u] = getRoot(root[u]);
        return root[u];
    }
    bool unite(int u, int v){
        u = getRoot(u);
        v = getRoot(v);
        if (u == v)
            return 0;
        if (rnk[u] < rnk[v])
            swap(u, v);
        root[v] = u;
        rnk[u] += (rnk[u] == rnk[v]);
        return 1;
    }
    bool check(int u, int v){
        return (getRoot(u) == getRoot(v));
    }
} dsu;

ll hashing(const vector<int> &a){
    ll res = 0;
    for(int x : a)
        res = res * base + x;
    return res;
}

int construct(vector<vector<int>> _a){
    int n = _a.size();
    vector<vector<int>> res(n, vector<int>(n, 0));
    vector<ll> hashed(n);

    for(int i = 0; i < n; i++)
        for(int j = 0; j < n; j++)
            if (_a[i][j] == 3)
                return 0;

    for(int i = 0; i < n; i++)
        hashed[i] = hashing(_a[i]);

    dsu.init(n);
    for(int i = 0; i < n; i++)
        for(int j = 0; j < n; j++)
            if (_a[i][j] == 1 && i != j){
                if (dsu.unite(i, j)){
                    res[i][j] = res[j][i] = 1;
                }
                if (hashed[i] != hashed[j])
                    return 0;
            }

    vector <int> roots;
    for(int i = 0; i < n; i++)
        if (dsu.getRoot(i) == i){
            int cur = i;
            int cnt = 0;
            for(int j = 0; j < n; j++)
                if (_a[i][j] == 2 && dsu.getRoot(j) == j){
                    cnt++;
                    dsu.unite(i, j);
                    res[cur][j] = res[j][cur] = 1;
                    cur = j;
                }
            if (cur != i && cnt < 2)
                return 0;
            if (cur != i)
                res[i][cur] = res[cur][i] = 1;
        }
    for(int i = 0; i < n; i++)
        for(int j = 0; j < n; j++)
            if ((_a[i][j] > 0) != dsu.check(i, j))
                return 0;

    build(res);
    return 1;
}

Subtask #1
11.0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 256 KB Output is correct
2 Correct 1 ms 256 KB Output is correct
3 Correct 1 ms 256 KB Output is correct
4 Correct 0 ms 256 KB Output is correct
5 Correct 1 ms 384 KB Output is correct
6 Correct 11 ms 1152 KB Output is correct
7 Correct 244 ms 22136 KB Output is correct

Subtask #2
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 256 KB Output is correct
2 Correct 1 ms 256 KB Output is correct
3 Correct 1 ms 256 KB Output is correct
4 Correct 0 ms 256 KB Output is correct
5 Correct 1 ms 384 KB Output is correct
6 Correct 11 ms 1152 KB Output is correct
7 Correct 244 ms 22136 KB Output is correct
8 Correct 0 ms 256 KB Output is correct
9 Correct 1 ms 256 KB Output is correct
10 Correct 0 ms 256 KB Output is correct
11 Correct 1 ms 256 KB Output is correct
12 Correct 10 ms 1152 KB Output is correct
13 Correct 241 ms 22108 KB Output is correct
14 Correct 0 ms 256 KB Output is correct
15 Correct 0 ms 256 KB Output is correct
16 Correct 5 ms 768 KB Output is correct
17 Correct 105 ms 12152 KB Output is correct
18 Correct 0 ms 256 KB Output is correct
19 Correct 0 ms 256 KB Output is correct
20 Correct 62 ms 6008 KB Output is correct
21 Correct 241 ms 22136 KB Output is correct
22 Correct 240 ms 22136 KB Output is correct
23 Correct 249 ms 22140 KB Output is correct
24 Correct 235 ms 22136 KB Output is correct
25 Correct 101 ms 12152 KB Output is correct
26 Correct 101 ms 12152 KB Output is correct
27 Correct 256 ms 22136 KB Output is correct
28 Correct 241 ms 22264 KB Output is correct

Subtask #3
19.0 / 19.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 256 KB Output is correct
2 Correct 0 ms 256 KB Output is correct
3 Correct 0 ms 256 KB Output is correct
4 Correct 0 ms 256 KB Output is correct
5 Correct 1 ms 256 KB Output is correct
6 Correct 0 ms 256 KB Output is correct
7 Correct 0 ms 256 KB Output is correct
8 Correct 10 ms 1152 KB Output is correct
9 Correct 247 ms 22136 KB Output is correct
10 Correct 0 ms 256 KB Output is correct
11 Correct 0 ms 256 KB Output is correct
12 Correct 11 ms 1152 KB Output is correct
13 Correct 241 ms 22136 KB Output is correct
14 Correct 0 ms 256 KB Output is correct
15 Correct 0 ms 256 KB Output is correct
16 Correct 6 ms 768 KB Output is correct
17 Correct 109 ms 12152 KB Output is correct
18 Correct 0 ms 256 KB Output is correct
19 Correct 0 ms 256 KB Output is correct
20 Correct 0 ms 256 KB Output is correct
21 Correct 60 ms 5880 KB Output is correct
22 Correct 237 ms 22092 KB Output is correct
23 Correct 244 ms 22136 KB Output is correct
24 Correct 248 ms 22136 KB Output is correct
25 Correct 100 ms 12156 KB Output is correct
26 Correct 99 ms 12152 KB Output is correct
27 Correct 238 ms 22136 KB Output is correct
28 Correct 255 ms 22104 KB Output is correct
29 Correct 98 ms 12152 KB Output is correct

Subtask #4
35.0 / 35.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 256 KB Output is correct
2 Correct 0 ms 384 KB Output is correct
3 Correct 0 ms 256 KB Output is correct
4 Correct 61 ms 5756 KB Output is correct
5 Correct 247 ms 22136 KB Output is correct
6 Correct 247 ms 22136 KB Output is correct
7 Correct 250 ms 22136 KB Output is correct
8 Correct 0 ms 384 KB Output is correct
9 Correct 62 ms 5880 KB Output is correct
10 Correct 242 ms 22136 KB Output is correct
11 Correct 238 ms 22136 KB Output is correct
12 Correct 246 ms 22136 KB Output is correct
13 Correct 1 ms 256 KB Output is correct
14 Correct 1 ms 256 KB Output is correct
15 Correct 1 ms 256 KB Output is correct
16 Correct 61 ms 5880 KB Output is correct
17 Correct 246 ms 22136 KB Output is correct
18 Correct 239 ms 22136 KB Output is correct
19 Correct 237 ms 22136 KB Output is correct
20 Correct 241 ms 22136 KB Output is correct

Subtask #5
21.0 / 21.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 256 KB Output is correct
2 Correct 1 ms 256 KB Output is correct
3 Correct 1 ms 256 KB Output is correct
4 Correct 0 ms 256 KB Output is correct
5 Correct 1 ms 384 KB Output is correct
6 Correct 11 ms 1152 KB Output is correct
7 Correct 244 ms 22136 KB Output is correct
8 Correct 0 ms 256 KB Output is correct
9 Correct 1 ms 256 KB Output is correct
10 Correct 0 ms 256 KB Output is correct
11 Correct 1 ms 256 KB Output is correct
12 Correct 10 ms 1152 KB Output is correct
13 Correct 241 ms 22108 KB Output is correct
14 Correct 0 ms 256 KB Output is correct
15 Correct 0 ms 256 KB Output is correct
16 Correct 5 ms 768 KB Output is correct
17 Correct 105 ms 12152 KB Output is correct
18 Correct 0 ms 256 KB Output is correct
19 Correct 0 ms 256 KB Output is correct
20 Correct 62 ms 6008 KB Output is correct
21 Correct 241 ms 22136 KB Output is correct
22 Correct 240 ms 22136 KB Output is correct
23 Correct 249 ms 22140 KB Output is correct
24 Correct 235 ms 22136 KB Output is correct
25 Correct 101 ms 12152 KB Output is correct
26 Correct 101 ms 12152 KB Output is correct
27 Correct 256 ms 22136 KB Output is correct
28 Correct 241 ms 22264 KB Output is correct
29 Correct 1 ms 256 KB Output is correct
30 Correct 0 ms 256 KB Output is correct
31 Correct 0 ms 256 KB Output is correct
32 Correct 0 ms 256 KB Output is correct
33 Correct 1 ms 256 KB Output is correct
34 Correct 0 ms 256 KB Output is correct
35 Correct 0 ms 256 KB Output is correct
36 Correct 10 ms 1152 KB Output is correct
37 Correct 247 ms 22136 KB Output is correct
38 Correct 0 ms 256 KB Output is correct
39 Correct 0 ms 256 KB Output is correct
40 Correct 11 ms 1152 KB Output is correct
41 Correct 241 ms 22136 KB Output is correct
42 Correct 0 ms 256 KB Output is correct
43 Correct 0 ms 256 KB Output is correct
44 Correct 6 ms 768 KB Output is correct
45 Correct 109 ms 12152 KB Output is correct
46 Correct 0 ms 256 KB Output is correct
47 Correct 0 ms 256 KB Output is correct
48 Correct 0 ms 256 KB Output is correct
49 Correct 60 ms 5880 KB Output is correct
50 Correct 237 ms 22092 KB Output is correct
51 Correct 244 ms 22136 KB Output is correct
52 Correct 248 ms 22136 KB Output is correct
53 Correct 100 ms 12156 KB Output is correct
54 Correct 99 ms 12152 KB Output is correct
55 Correct 238 ms 22136 KB Output is correct
56 Correct 255 ms 22104 KB Output is correct
57 Correct 98 ms 12152 KB Output is correct
58 Correct 0 ms 256 KB Output is correct
59 Correct 0 ms 256 KB Output is correct
60 Correct 5 ms 768 KB Output is correct
61 Correct 103 ms 12128 KB Output is correct
62 Correct 1 ms 256 KB Output is correct
63 Correct 0 ms 384 KB Output is correct
64 Correct 1 ms 256 KB Output is correct
65 Correct 63 ms 5880 KB Output is correct
66 Correct 98 ms 12152 KB Output is correct
67 Correct 98 ms 12152 KB Output is correct
68 Correct 96 ms 12152 KB Output is correct
69 Correct 103 ms 12232 KB Output is correct

Subtask #6
4.0 / 4.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 256 KB Output is correct
2 Correct 1 ms 256 KB Output is correct
3 Correct 1 ms 256 KB Output is correct
4 Correct 0 ms 256 KB Output is correct
5 Correct 1 ms 384 KB Output is correct
6 Correct 11 ms 1152 KB Output is correct
7 Correct 244 ms 22136 KB Output is correct
8 Correct 0 ms 256 KB Output is correct
9 Correct 1 ms 256 KB Output is correct
10 Correct 0 ms 256 KB Output is correct
11 Correct 1 ms 256 KB Output is correct
12 Correct 10 ms 1152 KB Output is correct
13 Correct 241 ms 22108 KB Output is correct
14 Correct 0 ms 256 KB Output is correct
15 Correct 0 ms 256 KB Output is correct
16 Correct 5 ms 768 KB Output is correct
17 Correct 105 ms 12152 KB Output is correct
18 Correct 0 ms 256 KB Output is correct
19 Correct 0 ms 256 KB Output is correct
20 Correct 62 ms 6008 KB Output is correct
21 Correct 241 ms 22136 KB Output is correct
22 Correct 240 ms 22136 KB Output is correct
23 Correct 249 ms 22140 KB Output is correct
24 Correct 235 ms 22136 KB Output is correct
25 Correct 101 ms 12152 KB Output is correct
26 Correct 101 ms 12152 KB Output is correct
27 Correct 256 ms 22136 KB Output is correct
28 Correct 241 ms 22264 KB Output is correct
29 Correct 1 ms 256 KB Output is correct
30 Correct 0 ms 256 KB Output is correct
31 Correct 0 ms 256 KB Output is correct
32 Correct 0 ms 256 KB Output is correct
33 Correct 1 ms 256 KB Output is correct
34 Correct 0 ms 256 KB Output is correct
35 Correct 0 ms 256 KB Output is correct
36 Correct 10 ms 1152 KB Output is correct
37 Correct 247 ms 22136 KB Output is correct
38 Correct 0 ms 256 KB Output is correct
39 Correct 0 ms 256 KB Output is correct
40 Correct 11 ms 1152 KB Output is correct
41 Correct 241 ms 22136 KB Output is correct
42 Correct 0 ms 256 KB Output is correct
43 Correct 0 ms 256 KB Output is correct
44 Correct 6 ms 768 KB Output is correct
45 Correct 109 ms 12152 KB Output is correct
46 Correct 0 ms 256 KB Output is correct
47 Correct 0 ms 256 KB Output is correct
48 Correct 0 ms 256 KB Output is correct
49 Correct 60 ms 5880 KB Output is correct
50 Correct 237 ms 22092 KB Output is correct
51 Correct 244 ms 22136 KB Output is correct
52 Correct 248 ms 22136 KB Output is correct
53 Correct 100 ms 12156 KB Output is correct
54 Correct 99 ms 12152 KB Output is correct
55 Correct 238 ms 22136 KB Output is correct
56 Correct 255 ms 22104 KB Output is correct
57 Correct 98 ms 12152 KB Output is correct
58 Correct 0 ms 256 KB Output is correct
59 Correct 0 ms 384 KB Output is correct
60 Correct 0 ms 256 KB Output is correct
61 Correct 61 ms 5756 KB Output is correct
62 Correct 247 ms 22136 KB Output is correct
63 Correct 247 ms 22136 KB Output is correct
64 Correct 250 ms 22136 KB Output is correct
65 Correct 0 ms 384 KB Output is correct
66 Correct 62 ms 5880 KB Output is correct
67 Correct 242 ms 22136 KB Output is correct
68 Correct 238 ms 22136 KB Output is correct
69 Correct 246 ms 22136 KB Output is correct
70 Correct 1 ms 256 KB Output is correct
71 Correct 1 ms 256 KB Output is correct
72 Correct 1 ms 256 KB Output is correct
73 Correct 61 ms 5880 KB Output is correct
74 Correct 246 ms 22136 KB Output is correct
75 Correct 239 ms 22136 KB Output is correct
76 Correct 237 ms 22136 KB Output is correct
77 Correct 241 ms 22136 KB Output is correct
78 Correct 0 ms 256 KB Output is correct
79 Correct 0 ms 256 KB Output is correct
80 Correct 5 ms 768 KB Output is correct
81 Correct 103 ms 12128 KB Output is correct
82 Correct 1 ms 256 KB Output is correct
83 Correct 0 ms 384 KB Output is correct
84 Correct 1 ms 256 KB Output is correct
85 Correct 63 ms 5880 KB Output is correct
86 Correct 98 ms 12152 KB Output is correct
87 Correct 98 ms 12152 KB Output is correct
88 Correct 96 ms 12152 KB Output is correct
89 Correct 103 ms 12232 KB Output is correct
90 Correct 0 ms 256 KB Output is correct
91 Correct 1 ms 256 KB Output is correct
92 Correct 4 ms 768 KB Output is correct
93 Correct 98 ms 12152 KB Output is correct
94 Correct 1 ms 256 KB Output is correct
95 Correct 1 ms 256 KB Output is correct
96 Correct 0 ms 256 KB Output is correct
97 Correct 24 ms 3328 KB Output is correct
98 Correct 95 ms 12128 KB Output is correct
99 Correct 102 ms 12152 KB Output is correct
100 Correct 95 ms 12124 KB Output is correct
101 Correct 97 ms 12152 KB Output is correct
102 Correct 98 ms 12152 KB Output is correct
103 Correct 96 ms 12152 KB Output is correct
104 Correct 95 ms 12152 KB Output is correct
105 Correct 101 ms 12152 KB Output is correct