oj.uz

Submission #572732

# Submission time Handle Problem Language Result Execution time Memory
572732 2022-06-05T07:12:56 Z kartel Connecting Supertrees (IOI20_supertrees) C++14
96 / 100
 222 ms 24176 KB 
#include <bits/stdc++.h>
//#include "grader.cpp"
#include "supertrees.h"
#define sz(x) (int)x.size()
#define pb push_back
using namespace std;

const int N = 1e3 + 500;

int pr[N];
int prl[N];

int f(int v) {return (pr[v] == v ? v : pr[v] = f(pr[v]));}
void link(int a, int b) {
    a = f(a); b = f(b);
    if (a == b) {
        return;
    }
    pr[a] = b;
}

int fl(int v) {return (prl[v] == v ? v : prl[v] = fl(prl[v]));}
void linkl(int a, int b) {
    a = fl(a); b = fl(b);
    if (a == b) {
        return;
    }
    prl[a] = b;
}

int construct(vector <vector <int> > p) {
    int n = sz(p);
    for (int i = 0; i < n; i++) {
        pr[i] = i;
        prl[i] = i;
    }
    vector <int> cnt(4, 0);
    for (int i = 0; i < n; i++) {
        for (int j = 0; j < n; j++) {
            if (p[i][j] == 1 && i != j) {
                link(i, j);
            }
            cnt[p[i][j]]++;
            if (p[i][j] > 0 && i != j) {
                linkl(i, j);
            }
        }
    }
    if (cnt[2] && cnt[3]) {
        return 0;
    }

    vector <vector <int> > b(n, vector <int> (n, 0));
    vector <set<int> > cp(n);
    set<int> cpp;

    for (int i = 0; i < n; i++) {
        cp[fl(i)].insert(i);
        cpp.insert(fl(i));
    }

    for (int i = 0; i < n; i++) {
        for (int j = 0; j < n; j++) {
            if (fl(i) == fl(j) && !p[i][j]) {
                return 0;
            }
        }
    }

    vector <int> used(n, 0);
    for (auto pp : cpp) {
        set <int> cyc;
        vector <int> c;
        for (auto i : cp[pp]) {
            if (cyc.count(f(i))) {
                continue;
            }
            cyc.insert(f(i));
            c.pb(i);
        }

        if (cnt[3] && (sz(cyc) == 3 || sz(cyc) == 2)) {
            return 0;
        }
        if (cnt[2] && sz(cyc) == 2) {
            return 0;
        }

        for (int i = 0; i < sz(c); i++) {
            b[c[i]][c[(i + 1) % sz(c)]] = 1;
            b[c[(i + 1) % sz(c)]][c[i]] = 1;
        }

        if (cnt[3]) {
            b[c[1]][c[2]] = 1;
            b[c[2]][c[1]] = 1;
        }

        vector <vector <int> > cmp(n);
        set <int> cmps;
        for (auto i : cp[pp]) {
            cmp[f(i)].pb(i);
            cmps.insert(f(i));
        }

        int it = 0;
        for (auto i : cp[pp]) {
            if (sz(cmp[i])) {
                int last = cmp[i][0];
                for (auto x : cmp[i]) {
                    if (x == last) {
                        continue;
                    }
                    b[last][x] = 1;
                    b[x][last] = 1;
                    last = x;
                }
            }
        }
    }
    for (int i = 0; i < n; i++) {
        b[i][i] = 0;
    }

    build(b);
    return 1;
}

Compilation message

supertrees.cpp: In function 'int construct(std::vector<std::vector<int> >)':
supertrees.cpp:106:13: warning: unused variable 'it' [-Wunused-variable]
  106 |         int it = 0;
      |             ^~

Subtask #1
11.0 / 11.0

# 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 0 ms 212 KB Output is correct
5 Correct 0 ms 288 KB Output is correct
6 Correct 8 ms 1168 KB Output is correct
7 Correct 192 ms 22060 KB Output is correct

Subtask #2
10.0 / 10.0

# 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 0 ms 212 KB Output is correct
5 Correct 0 ms 288 KB Output is correct
6 Correct 8 ms 1168 KB Output is correct
7 Correct 192 ms 22060 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 172 ms 22160 KB Output is correct
14 Correct 1 ms 212 KB Output is correct
15 Correct 1 ms 212 KB Output is correct
16 Correct 4 ms 724 KB Output is correct
17 Correct 90 ms 12180 KB Output is correct
18 Correct 0 ms 212 KB Output is correct
19 Correct 0 ms 212 KB Output is correct
20 Correct 49 ms 5776 KB Output is correct
21 Correct 186 ms 22064 KB Output is correct
22 Correct 175 ms 22164 KB Output is correct
23 Correct 193 ms 22372 KB Output is correct
24 Correct 186 ms 22148 KB Output is correct
25 Correct 79 ms 12168 KB Output is correct
26 Correct 83 ms 12164 KB Output is correct
27 Correct 197 ms 22092 KB Output is correct
28 Correct 177 ms 22152 KB Output is correct

Subtask #3
19.0 / 19.0

# 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 0 ms 212 KB Output is correct
7 Correct 0 ms 212 KB Output is correct
8 Correct 7 ms 1240 KB Output is correct
9 Correct 172 ms 22152 KB Output is correct
10 Correct 0 ms 212 KB Output is correct
11 Correct 0 ms 212 KB Output is correct
12 Correct 8 ms 1236 KB Output is correct
13 Correct 174 ms 22152 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 87 ms 12236 KB Output is correct
18 Correct 0 ms 212 KB Output is correct
19 Correct 0 ms 212 KB Output is correct
20 Correct 1 ms 232 KB Output is correct
21 Correct 45 ms 6224 KB Output is correct
22 Correct 175 ms 24072 KB Output is correct
23 Correct 193 ms 24164 KB Output is correct
24 Correct 184 ms 24100 KB Output is correct
25 Correct 75 ms 14204 KB Output is correct
26 Correct 73 ms 14076 KB Output is correct
27 Correct 182 ms 24064 KB Output is correct
28 Correct 195 ms 24056 KB Output is correct
29 Correct 103 ms 14208 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 45 ms 5708 KB Output is correct
5 Correct 199 ms 22060 KB Output is correct
6 Correct 179 ms 22100 KB Output is correct
7 Correct 207 ms 22112 KB Output is correct
8 Correct 0 ms 212 KB Output is correct
9 Correct 55 ms 6204 KB Output is correct
10 Correct 181 ms 24176 KB Output is correct
11 Correct 172 ms 24064 KB Output is correct
12 Correct 190 ms 24108 KB Output is correct
13 Correct 0 ms 212 KB Output is correct
14 Correct 1 ms 212 KB Output is correct
15 Correct 0 ms 300 KB Output is correct
16 Correct 48 ms 6264 KB Output is correct
17 Correct 172 ms 24052 KB Output is correct
18 Correct 222 ms 24012 KB Output is correct
19 Correct 175 ms 24020 KB Output is correct
20 Correct 193 ms 24156 KB Output is correct

Subtask #5
21.0 / 21.0

# 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 0 ms 212 KB Output is correct
5 Correct 0 ms 288 KB Output is correct
6 Correct 8 ms 1168 KB Output is correct
7 Correct 192 ms 22060 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 172 ms 22160 KB Output is correct
14 Correct 1 ms 212 KB Output is correct
15 Correct 1 ms 212 KB Output is correct
16 Correct 4 ms 724 KB Output is correct
17 Correct 90 ms 12180 KB Output is correct
18 Correct 0 ms 212 KB Output is correct
19 Correct 0 ms 212 KB Output is correct
20 Correct 49 ms 5776 KB Output is correct
21 Correct 186 ms 22064 KB Output is correct
22 Correct 175 ms 22164 KB Output is correct
23 Correct 193 ms 22372 KB Output is correct
24 Correct 186 ms 22148 KB Output is correct
25 Correct 79 ms 12168 KB Output is correct
26 Correct 83 ms 12164 KB Output is correct
27 Correct 197 ms 22092 KB Output is correct
28 Correct 177 ms 22152 KB Output is correct
29 Correct 1 ms 212 KB Output is correct
30 Correct 0 ms 212 KB Output is correct
31 Correct 1 ms 212 KB Output is correct
32 Correct 0 ms 212 KB Output is correct
33 Correct 0 ms 212 KB Output is correct
34 Correct 0 ms 212 KB Output is correct
35 Correct 0 ms 212 KB Output is correct
36 Correct 7 ms 1240 KB Output is correct
37 Correct 172 ms 22152 KB Output is correct
38 Correct 0 ms 212 KB Output is correct
39 Correct 0 ms 212 KB Output is correct
40 Correct 8 ms 1236 KB Output is correct
41 Correct 174 ms 22152 KB Output is correct
42 Correct 0 ms 212 KB Output is correct
43 Correct 0 ms 212 KB Output is correct
44 Correct 4 ms 724 KB Output is correct
45 Correct 87 ms 12236 KB Output is correct
46 Correct 0 ms 212 KB Output is correct
47 Correct 0 ms 212 KB Output is correct
48 Correct 1 ms 232 KB Output is correct
49 Correct 45 ms 6224 KB Output is correct
50 Correct 175 ms 24072 KB Output is correct
51 Correct 193 ms 24164 KB Output is correct
52 Correct 184 ms 24100 KB Output is correct
53 Correct 75 ms 14204 KB Output is correct
54 Correct 73 ms 14076 KB Output is correct
55 Correct 182 ms 24064 KB Output is correct
56 Correct 195 ms 24056 KB Output is correct
57 Correct 103 ms 14208 KB Output is correct
58 Correct 1 ms 212 KB Output is correct
59 Correct 0 ms 304 KB Output is correct
60 Correct 4 ms 852 KB Output is correct
61 Correct 102 ms 14156 KB Output is correct
62 Correct 1 ms 308 KB Output is correct
63 Correct 1 ms 212 KB Output is correct
64 Correct 1 ms 212 KB Output is correct
65 Correct 46 ms 6308 KB Output is correct
66 Correct 77 ms 14080 KB Output is correct
67 Correct 78 ms 14092 KB Output is correct
68 Correct 85 ms 14288 KB Output is correct
69 Correct 73 ms 14216 KB Output is correct

Subtask #6
0 / 4.0

# 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 0 ms 212 KB Output is correct
5 Correct 0 ms 288 KB Output is correct
6 Correct 8 ms 1168 KB Output is correct
7 Correct 192 ms 22060 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 172 ms 22160 KB Output is correct
14 Correct 1 ms 212 KB Output is correct
15 Correct 1 ms 212 KB Output is correct
16 Correct 4 ms 724 KB Output is correct
17 Correct 90 ms 12180 KB Output is correct
18 Correct 0 ms 212 KB Output is correct
19 Correct 0 ms 212 KB Output is correct
20 Correct 49 ms 5776 KB Output is correct
21 Correct 186 ms 22064 KB Output is correct
22 Correct 175 ms 22164 KB Output is correct
23 Correct 193 ms 22372 KB Output is correct
24 Correct 186 ms 22148 KB Output is correct
25 Correct 79 ms 12168 KB Output is correct
26 Correct 83 ms 12164 KB Output is correct
27 Correct 197 ms 22092 KB Output is correct
28 Correct 177 ms 22152 KB Output is correct
29 Correct 1 ms 212 KB Output is correct
30 Correct 0 ms 212 KB Output is correct
31 Correct 1 ms 212 KB Output is correct
32 Correct 0 ms 212 KB Output is correct
33 Correct 0 ms 212 KB Output is correct
34 Correct 0 ms 212 KB Output is correct
35 Correct 0 ms 212 KB Output is correct
36 Correct 7 ms 1240 KB Output is correct
37 Correct 172 ms 22152 KB Output is correct
38 Correct 0 ms 212 KB Output is correct
39 Correct 0 ms 212 KB Output is correct
40 Correct 8 ms 1236 KB Output is correct
41 Correct 174 ms 22152 KB Output is correct
42 Correct 0 ms 212 KB Output is correct
43 Correct 0 ms 212 KB Output is correct
44 Correct 4 ms 724 KB Output is correct
45 Correct 87 ms 12236 KB Output is correct
46 Correct 0 ms 212 KB Output is correct
47 Correct 0 ms 212 KB Output is correct
48 Correct 1 ms 232 KB Output is correct
49 Correct 45 ms 6224 KB Output is correct
50 Correct 175 ms 24072 KB Output is correct
51 Correct 193 ms 24164 KB Output is correct
52 Correct 184 ms 24100 KB Output is correct
53 Correct 75 ms 14204 KB Output is correct
54 Correct 73 ms 14076 KB Output is correct
55 Correct 182 ms 24064 KB Output is correct
56 Correct 195 ms 24056 KB Output is correct
57 Correct 103 ms 14208 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 45 ms 5708 KB Output is correct
62 Correct 199 ms 22060 KB Output is correct
63 Correct 179 ms 22100 KB Output is correct
64 Correct 207 ms 22112 KB Output is correct
65 Correct 0 ms 212 KB Output is correct
66 Correct 55 ms 6204 KB Output is correct
67 Correct 181 ms 24176 KB Output is correct
68 Correct 172 ms 24064 KB Output is correct
69 Correct 190 ms 24108 KB Output is correct
70 Correct 0 ms 212 KB Output is correct
71 Correct 1 ms 212 KB Output is correct
72 Correct 0 ms 300 KB Output is correct
73 Correct 48 ms 6264 KB Output is correct
74 Correct 172 ms 24052 KB Output is correct
75 Correct 222 ms 24012 KB Output is correct
76 Correct 175 ms 24020 KB Output is correct
77 Correct 193 ms 24156 KB Output is correct
78 Correct 1 ms 212 KB Output is correct
79 Correct 0 ms 304 KB Output is correct
80 Correct 4 ms 852 KB Output is correct
81 Correct 102 ms 14156 KB Output is correct
82 Correct 1 ms 308 KB Output is correct
83 Correct 1 ms 212 KB Output is correct
84 Correct 1 ms 212 KB Output is correct
85 Correct 46 ms 6308 KB Output is correct
86 Correct 77 ms 14080 KB Output is correct
87 Correct 78 ms 14092 KB Output is correct
88 Correct 85 ms 14288 KB Output is correct
89 Correct 73 ms 14216 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 700 KB Output is correct
93 Correct 83 ms 10108 KB Output is correct
94 Correct 1 ms 212 KB Output is correct
95 Correct 1 ms 212 KB Output is correct
96 Correct 1 ms 212 KB Output is correct
97 Correct 17 ms 2684 KB Output is correct
98 Correct 74 ms 10108 KB Output is correct
99 Correct 73 ms 10120 KB Output is correct
100 Correct 70 ms 10192 KB Output is correct
101 Correct 74 ms 10060 KB Output is correct
102 Incorrect 177 ms 24056 KB Answer gives possible 1 while actual possible 0
103 Halted 0 ms 0 KB -