oj.uz

Submission #340626

# Submission time Handle Problem Language Result Execution time Memory
340626 2020-12-28T03:31:13 Z todaybrian Connecting Supertrees (IOI20_supertrees) C++14
100 / 100
 283 ms 24172 KB 
#include <bits/stdc++.h>
using namespace std;
typedef pair<int, int> pii;
typedef long long ll;

struct DSU {
    vector<int> p; void init(int N) { p = vector<int>(N,-1); }
    int get(int x) { return p[x] < 0 ? x : p[x] = get(p[x]); }
    bool sameSet(int a, int b) { return get(a) == get(b); }
    int size(int x) { return -p[get(x)]; }
    bool merge(int x, int y) {
        x = get(x), y = get(y); if (x == y) return 0;
        if (p[x] > p[y]) swap(x,y);
        p[x] += p[y]; p[y] = x; return 1;
    }
} ds1, ds2;

void build(vector<vector<int>> b);

//void build(vector<vector<int>> b){
//    for(vector<int> a:b){
//        for (int i = 0; i < a.size(); i++) {
//            cout << a[i] << ' ';
//        }
//        cout << '\n';
//    }
//}

int N;
int construct(vector<vector<int> > p){
    N = p.size();
    vector<vector<int>>  b(N, vector<int>(N, 0));
    ds1.init(N+1); ds2.init(N+1);
    for (int i = 0; i < N; i++) {
        for (int j = 0; j < N; j++) {
            if(i==j) continue;
            if(p[i][j]!=0) ds1.merge(i, j);
            if(p[i][j]==3) return 0;
        }
    }
    for (int i = 0; i < N; i++) {
        for (int j = 0; j < N; j++) {
            if(i==j) continue;
            if(p[i][j] ==0 && ds1.sameSet(i, j)) return 0;
        }
    }
    for (int i = 0; i < N; i++) {
        if(ds1.p[i]>=0) continue;
        unordered_set<int> added;
        for (int j = 0; j < N; j++) {
            if(!ds1.sameSet(i, j)) continue;
            for (int k = 0; k < N; k++) {
                if(!ds1.sameSet(i, k) || j==k) continue;
                if(p[j][k] == 1) {
                    ds2.merge(j, k);
                }
            }
        }
        for (int j = 0; j < N; j++) {
            if(!ds1.sameSet(i, j)) continue;
            if(ds2.get(j) == j) added.insert(j);
        }
        for (int j = 0; j < N; j++) {
            if(ds2.get(j) != j || !added.count(j)) continue;
            int prev =  j;
            for (int k = 0; k < N; k++) {
                if(j==k || !ds2.sameSet(j, k)) continue;
                if(p[j][k] !=1) return 0;
                b[prev][k] = b[k][prev] = 1;
                prev= k;
            }
        }
        if(added.size()==2) return 0;
        if(added.size()>=3){
            int prev = -1, fst = -1;
            for(auto it:added){
                if(prev==-1) prev = it, fst = it;
                else{
                    b[prev][it] = b[it][prev] = 1;
                    prev = it;
                }
            }
            b[fst][prev] = b[prev][fst] = 1;
        }
    }
    build(b);
    return 1;
}

//int main(){
//    cin >> N;
//    vector<vector<int>>  b(N, vector<int>(N, 0));
//    for (int i = 0; i < N; i++) {
//        for (int j = 0; j < N; j++) {
//            cin >> b[i][j];
//        }
//    }
//    construct(b);
//    return 0;
//}

Subtask #1
11.0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 364 KB Output is correct
2 Correct 1 ms 364 KB Output is correct
3 Correct 1 ms 364 KB Output is correct
4 Correct 1 ms 364 KB Output is correct
5 Correct 1 ms 364 KB Output is correct
6 Correct 11 ms 1260 KB Output is correct
7 Correct 268 ms 24172 KB Output is correct

Subtask #2
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 364 KB Output is correct
2 Correct 1 ms 364 KB Output is correct
3 Correct 1 ms 364 KB Output is correct
4 Correct 1 ms 364 KB Output is correct
5 Correct 1 ms 364 KB Output is correct
6 Correct 11 ms 1260 KB Output is correct
7 Correct 268 ms 24172 KB Output is correct
8 Correct 1 ms 364 KB Output is correct
9 Correct 1 ms 364 KB Output is correct
10 Correct 1 ms 364 KB Output is correct
11 Correct 1 ms 364 KB Output is correct
12 Correct 12 ms 1260 KB Output is correct
13 Correct 277 ms 24172 KB Output is correct
14 Correct 1 ms 364 KB Output is correct
15 Correct 1 ms 364 KB Output is correct
16 Correct 5 ms 876 KB Output is correct
17 Correct 121 ms 14188 KB Output is correct
18 Correct 1 ms 364 KB Output is correct
19 Correct 1 ms 364 KB Output is correct
20 Correct 70 ms 6508 KB Output is correct
21 Correct 272 ms 24044 KB Output is correct
22 Correct 273 ms 24072 KB Output is correct
23 Correct 280 ms 24172 KB Output is correct
24 Correct 282 ms 24016 KB Output is correct
25 Correct 113 ms 14188 KB Output is correct
26 Correct 105 ms 14188 KB Output is correct
27 Correct 278 ms 24044 KB Output is correct
28 Correct 277 ms 24044 KB Output is correct

Subtask #3
19.0 / 19.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 364 KB Output is correct
2 Correct 1 ms 364 KB Output is correct
3 Correct 1 ms 364 KB Output is correct
4 Correct 1 ms 364 KB Output is correct
5 Correct 1 ms 364 KB Output is correct
6 Correct 1 ms 364 KB Output is correct
7 Correct 1 ms 364 KB Output is correct
8 Correct 12 ms 1260 KB Output is correct
9 Correct 276 ms 24044 KB Output is correct
10 Correct 1 ms 364 KB Output is correct
11 Correct 1 ms 364 KB Output is correct
12 Correct 11 ms 1260 KB Output is correct
13 Correct 267 ms 24044 KB Output is correct
14 Correct 1 ms 364 KB Output is correct
15 Correct 1 ms 364 KB Output is correct
16 Correct 5 ms 876 KB Output is correct
17 Correct 119 ms 14188 KB Output is correct
18 Correct 1 ms 364 KB Output is correct
19 Correct 1 ms 364 KB Output is correct
20 Correct 1 ms 364 KB Output is correct
21 Correct 69 ms 6380 KB Output is correct
22 Correct 270 ms 24016 KB Output is correct
23 Correct 269 ms 24044 KB Output is correct
24 Correct 275 ms 24092 KB Output is correct
25 Correct 116 ms 14188 KB Output is correct
26 Correct 108 ms 14188 KB Output is correct
27 Correct 274 ms 24044 KB Output is correct
28 Correct 279 ms 24044 KB Output is correct
29 Correct 117 ms 14188 KB Output is correct

Subtask #4
35.0 / 35.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 364 KB Output is correct
2 Correct 1 ms 364 KB Output is correct
3 Correct 1 ms 364 KB Output is correct
4 Correct 68 ms 6252 KB Output is correct
5 Correct 267 ms 24044 KB Output is correct
6 Correct 274 ms 24172 KB Output is correct
7 Correct 277 ms 24044 KB Output is correct
8 Correct 1 ms 364 KB Output is correct
9 Correct 68 ms 6336 KB Output is correct
10 Correct 267 ms 24044 KB Output is correct
11 Correct 274 ms 24044 KB Output is correct
12 Correct 283 ms 24172 KB Output is correct
13 Correct 1 ms 364 KB Output is correct
14 Correct 1 ms 364 KB Output is correct
15 Correct 1 ms 364 KB Output is correct
16 Correct 69 ms 6252 KB Output is correct
17 Correct 270 ms 24044 KB Output is correct
18 Correct 270 ms 24068 KB Output is correct
19 Correct 264 ms 24172 KB Output is correct
20 Correct 275 ms 24068 KB Output is correct

Subtask #5
21.0 / 21.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 364 KB Output is correct
2 Correct 1 ms 364 KB Output is correct
3 Correct 1 ms 364 KB Output is correct
4 Correct 1 ms 364 KB Output is correct
5 Correct 1 ms 364 KB Output is correct
6 Correct 11 ms 1260 KB Output is correct
7 Correct 268 ms 24172 KB Output is correct
8 Correct 1 ms 364 KB Output is correct
9 Correct 1 ms 364 KB Output is correct
10 Correct 1 ms 364 KB Output is correct
11 Correct 1 ms 364 KB Output is correct
12 Correct 12 ms 1260 KB Output is correct
13 Correct 277 ms 24172 KB Output is correct
14 Correct 1 ms 364 KB Output is correct
15 Correct 1 ms 364 KB Output is correct
16 Correct 5 ms 876 KB Output is correct
17 Correct 121 ms 14188 KB Output is correct
18 Correct 1 ms 364 KB Output is correct
19 Correct 1 ms 364 KB Output is correct
20 Correct 70 ms 6508 KB Output is correct
21 Correct 272 ms 24044 KB Output is correct
22 Correct 273 ms 24072 KB Output is correct
23 Correct 280 ms 24172 KB Output is correct
24 Correct 282 ms 24016 KB Output is correct
25 Correct 113 ms 14188 KB Output is correct
26 Correct 105 ms 14188 KB Output is correct
27 Correct 278 ms 24044 KB Output is correct
28 Correct 277 ms 24044 KB Output is correct
29 Correct 1 ms 364 KB Output is correct
30 Correct 1 ms 364 KB Output is correct
31 Correct 1 ms 364 KB Output is correct
32 Correct 1 ms 364 KB Output is correct
33 Correct 1 ms 364 KB Output is correct
34 Correct 1 ms 364 KB Output is correct
35 Correct 1 ms 364 KB Output is correct
36 Correct 12 ms 1260 KB Output is correct
37 Correct 276 ms 24044 KB Output is correct
38 Correct 1 ms 364 KB Output is correct
39 Correct 1 ms 364 KB Output is correct
40 Correct 11 ms 1260 KB Output is correct
41 Correct 267 ms 24044 KB Output is correct
42 Correct 1 ms 364 KB Output is correct
43 Correct 1 ms 364 KB Output is correct
44 Correct 5 ms 876 KB Output is correct
45 Correct 119 ms 14188 KB Output is correct
46 Correct 1 ms 364 KB Output is correct
47 Correct 1 ms 364 KB Output is correct
48 Correct 1 ms 364 KB Output is correct
49 Correct 69 ms 6380 KB Output is correct
50 Correct 270 ms 24016 KB Output is correct
51 Correct 269 ms 24044 KB Output is correct
52 Correct 275 ms 24092 KB Output is correct
53 Correct 116 ms 14188 KB Output is correct
54 Correct 108 ms 14188 KB Output is correct
55 Correct 274 ms 24044 KB Output is correct
56 Correct 279 ms 24044 KB Output is correct
57 Correct 117 ms 14188 KB Output is correct
58 Correct 1 ms 364 KB Output is correct
59 Correct 1 ms 364 KB Output is correct
60 Correct 5 ms 876 KB Output is correct
61 Correct 119 ms 14188 KB Output is correct
62 Correct 1 ms 396 KB Output is correct
63 Correct 1 ms 364 KB Output is correct
64 Correct 1 ms 364 KB Output is correct
65 Correct 68 ms 6252 KB Output is correct
66 Correct 107 ms 14188 KB Output is correct
67 Correct 109 ms 14188 KB Output is correct
68 Correct 107 ms 14188 KB Output is correct
69 Correct 114 ms 14188 KB Output is correct

Subtask #6
4.0 / 4.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 364 KB Output is correct
2 Correct 1 ms 364 KB Output is correct
3 Correct 1 ms 364 KB Output is correct
4 Correct 1 ms 364 KB Output is correct
5 Correct 1 ms 364 KB Output is correct
6 Correct 11 ms 1260 KB Output is correct
7 Correct 268 ms 24172 KB Output is correct
8 Correct 1 ms 364 KB Output is correct
9 Correct 1 ms 364 KB Output is correct
10 Correct 1 ms 364 KB Output is correct
11 Correct 1 ms 364 KB Output is correct
12 Correct 12 ms 1260 KB Output is correct
13 Correct 277 ms 24172 KB Output is correct
14 Correct 1 ms 364 KB Output is correct
15 Correct 1 ms 364 KB Output is correct
16 Correct 5 ms 876 KB Output is correct
17 Correct 121 ms 14188 KB Output is correct
18 Correct 1 ms 364 KB Output is correct
19 Correct 1 ms 364 KB Output is correct
20 Correct 70 ms 6508 KB Output is correct
21 Correct 272 ms 24044 KB Output is correct
22 Correct 273 ms 24072 KB Output is correct
23 Correct 280 ms 24172 KB Output is correct
24 Correct 282 ms 24016 KB Output is correct
25 Correct 113 ms 14188 KB Output is correct
26 Correct 105 ms 14188 KB Output is correct
27 Correct 278 ms 24044 KB Output is correct
28 Correct 277 ms 24044 KB Output is correct
29 Correct 1 ms 364 KB Output is correct
30 Correct 1 ms 364 KB Output is correct
31 Correct 1 ms 364 KB Output is correct
32 Correct 1 ms 364 KB Output is correct
33 Correct 1 ms 364 KB Output is correct
34 Correct 1 ms 364 KB Output is correct
35 Correct 1 ms 364 KB Output is correct
36 Correct 12 ms 1260 KB Output is correct
37 Correct 276 ms 24044 KB Output is correct
38 Correct 1 ms 364 KB Output is correct
39 Correct 1 ms 364 KB Output is correct
40 Correct 11 ms 1260 KB Output is correct
41 Correct 267 ms 24044 KB Output is correct
42 Correct 1 ms 364 KB Output is correct
43 Correct 1 ms 364 KB Output is correct
44 Correct 5 ms 876 KB Output is correct
45 Correct 119 ms 14188 KB Output is correct
46 Correct 1 ms 364 KB Output is correct
47 Correct 1 ms 364 KB Output is correct
48 Correct 1 ms 364 KB Output is correct
49 Correct 69 ms 6380 KB Output is correct
50 Correct 270 ms 24016 KB Output is correct
51 Correct 269 ms 24044 KB Output is correct
52 Correct 275 ms 24092 KB Output is correct
53 Correct 116 ms 14188 KB Output is correct
54 Correct 108 ms 14188 KB Output is correct
55 Correct 274 ms 24044 KB Output is correct
56 Correct 279 ms 24044 KB Output is correct
57 Correct 117 ms 14188 KB Output is correct
58 Correct 1 ms 364 KB Output is correct
59 Correct 1 ms 364 KB Output is correct
60 Correct 1 ms 364 KB Output is correct
61 Correct 68 ms 6252 KB Output is correct
62 Correct 267 ms 24044 KB Output is correct
63 Correct 274 ms 24172 KB Output is correct
64 Correct 277 ms 24044 KB Output is correct
65 Correct 1 ms 364 KB Output is correct
66 Correct 68 ms 6336 KB Output is correct
67 Correct 267 ms 24044 KB Output is correct
68 Correct 274 ms 24044 KB Output is correct
69 Correct 283 ms 24172 KB Output is correct
70 Correct 1 ms 364 KB Output is correct
71 Correct 1 ms 364 KB Output is correct
72 Correct 1 ms 364 KB Output is correct
73 Correct 69 ms 6252 KB Output is correct
74 Correct 270 ms 24044 KB Output is correct
75 Correct 270 ms 24068 KB Output is correct
76 Correct 264 ms 24172 KB Output is correct
77 Correct 275 ms 24068 KB Output is correct
78 Correct 1 ms 364 KB Output is correct
79 Correct 1 ms 364 KB Output is correct
80 Correct 5 ms 876 KB Output is correct
81 Correct 119 ms 14188 KB Output is correct
82 Correct 1 ms 396 KB Output is correct
83 Correct 1 ms 364 KB Output is correct
84 Correct 1 ms 364 KB Output is correct
85 Correct 68 ms 6252 KB Output is correct
86 Correct 107 ms 14188 KB Output is correct
87 Correct 109 ms 14188 KB Output is correct
88 Correct 107 ms 14188 KB Output is correct
89 Correct 114 ms 14188 KB Output is correct
90 Correct 1 ms 364 KB Output is correct
91 Correct 1 ms 364 KB Output is correct
92 Correct 5 ms 876 KB Output is correct
93 Correct 108 ms 14084 KB Output is correct
94 Correct 1 ms 364 KB Output is correct
95 Correct 1 ms 364 KB Output is correct
96 Correct 1 ms 364 KB Output is correct
97 Correct 26 ms 3820 KB Output is correct
98 Correct 107 ms 14188 KB Output is correct
99 Correct 107 ms 14188 KB Output is correct
100 Correct 105 ms 14188 KB Output is correct
101 Correct 106 ms 14188 KB Output is correct
102 Correct 103 ms 14188 KB Output is correct
103 Correct 104 ms 14188 KB Output is correct
104 Correct 103 ms 14188 KB Output is correct
105 Correct 111 ms 14188 KB Output is correct