oj.uz

Submission #305809

# Submission time Handle Problem Language Result Execution time Memory
305809 2020-09-24T01:48:26 Z Plasmatic Connecting Supertrees (IOI20_supertrees) C++14
100 / 100
 284 ms 22360 KB 
// supertree.yml
#include "bits/stdc++.h"
using namespace std;

// Defines
#define fs first
#define sn second
#define pb push_back
#define eb emplace_back
#define mpr make_pair
#define mtp make_tuple
#define all(x) (x).begin(), (x).end()
// Basic type definitions
using ll = long long; using ull = unsigned long long; using ld = long double;
using pii = pair<int, int>; using pll = pair<long long, long long>;
// PBDS order statistic tree
#include <ext/pb_ds/assoc_container.hpp> // Common file 
#include <ext/pb_ds/tree_policy.hpp>
using namespace __gnu_pbds; 
template <typename T, class comp = less<T>> using os_tree = tree<T, null_type, comp, rb_tree_tag, tree_order_statistics_node_update>;
template <typename K, typename V, class comp = less<K>> using treemap = tree<K, V, comp, rb_tree_tag, tree_order_statistics_node_update>;
// HashSet
#include <ext/pb_ds/assoc_container.hpp>
using namespace __gnu_pbds;
const ll RANDOM = chrono::high_resolution_clock::now().time_since_epoch().count();
struct chash { ll operator()(ll x) const { return x ^ RANDOM; } };
template <typename T, class Hash> using hashset = gp_hash_table<T, null_type, Hash>;
template <typename K, typename V, class Hash> using hashmap = gp_hash_table<K, V, Hash>;
// More utilities
int SZ(string &v) { return v.length(); }
template <typename C> int SZ(C &v) { return v.size(); }
template <typename C> void UNIQUE(vector<C> &v) { sort(v.begin(), v.end()); v.resize(unique(v.begin(), v.end()) - v.begin()); }
template <typename T, typename U> void maxa(T &a, U b) { a = max(a, b); }
template <typename T, typename U> void mina(T &a, U b) { a = min(a, b); }
const ll INF = 0x3f3f3f3f, LLINF = 0x3f3f3f3f3f3f3f3f;

struct DSU {
    vector<int> dsu;
    void init(int N) {
        dsu.resize(N + 1);
        iota(dsu.begin(), dsu.end(), 0);
    }
    int rt(int x) { return dsu[x] == x ? x : dsu[x] = rt(dsu[x]); }
    void merge(int x, int y) { // x -> y
        dsu[rt(x)] = rt(y); }
    bool same(int x, int y) { return rt(x) == rt(y); }
};

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

int construct(vector<vector<int>> g) {
    int N = SZ(g);
    vector<vector<int>> ansg(N, vector<int>(N));

    DSU d; d.init(N);
    for (auto i = 0; i < N; i++) {
        for (auto j = 0; j < N; j++) {
            if (g[i][j])
                d.merge(i, j);
            // symmetrical
            if (g[i][j] != g[j][i]) return 0;
            // impossible if 3
            if (g[i][j] == 3) return 0;
        }
    }
    vector<vector<int>> comp(N);
    for (auto i = 0; i < N; i++)
        comp[d.rt(i)].pb(i);

    auto _A = [&] (int x, int y) -> void {
        ansg[x][y] = ansg[y][x] = true;
    };

    // with components
    for (auto i = 0; i < N; i++) {
        if (!comp[i].empty()) {
            auto &cc = comp[i];
            // cout<<"i="<<(i)<<", "; cout << "cc=["; for (auto __x:cc)cout<<__x<<", "; cout<<"], "; cout << endl; // db i,I:cc
            if (SZ(cc) == 1) continue;
            for (auto x : cc) 
                for (auto y : cc) 
                    if (!g[x][y] || !g[y][x])
                        return 0;

            DSU dd; dd.init(N);
            for (auto x : cc)
                for (auto y : cc)
                    if (g[x][y] == 1)
                        dd.merge(x, y);
            vector<vector<int>> ccomp(N);
            vector<int> roots;
            for (auto x : cc) {
                ccomp[dd.rt(x)].pb(x);
                roots.pb(dd.rt(x));
            }
            UNIQUE(roots);

            // check
            for (auto x : cc)
                for (auto y : cc)
                    if ((g[x][y] == 1) != dd.same(x, y))
                        return 0;

            // build graph
            if (SZ(roots) >= 2) {
                if (SZ(roots) == 2) return 0;
                for (auto i = 0; i < SZ(roots); i++)
                    _A(roots[i], roots[(i + 1) % SZ(roots)]);
            }
            for (auto x : cc) {
                if (!ccomp[x].empty()) {
                    for (auto j = 0; j < SZ(ccomp[x])-1; j++)
                        _A(ccomp[x][j], ccomp[x][j + 1]);
                }
            }
        }
    }

    build(ansg);
    return 1;
}

#ifdef LOCAL
int N;
vector<vector<int>> req, ans;
void build(vector<vector<int>> v) { ans = v; }

int main() {
    ios_base::sync_with_stdio(false);
    cin.tie(NULL);

    cin >> (N);
    req.assign(N, vector<int>(N));
    for (auto i = 0; i < N; i++)
        for (auto j = 0; j < N; j++)
            cin >> (req[i][j]);
    int correct;
    cin >> correct;

    int out = construct(req);
    cout<<"out="<<(out)<<", "; cout<<"correct="<<(correct)<<", "; cout << endl; // db out,correct
    if (out) {
        cout << "Graph:" << endl;
        for (auto i = 0; i < N; i++)
            for (auto j = i; j < N; j++)
                if (ans[i][j])
                    cout << (i) << ' ' << (j) << '\n';
    }

    return 0;
}
#endif

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 1 ms 256 KB Output is correct
5 Correct 0 ms 256 KB Output is correct
6 Correct 12 ms 1280 KB Output is correct
7 Correct 283 ms 22100 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 1 ms 256 KB Output is correct
5 Correct 0 ms 256 KB Output is correct
6 Correct 12 ms 1280 KB Output is correct
7 Correct 283 ms 22100 KB Output is correct
8 Correct 1 ms 256 KB Output is correct
9 Correct 0 ms 256 KB Output is correct
10 Correct 1 ms 256 KB Output is correct
11 Correct 1 ms 256 KB Output is correct
12 Correct 11 ms 1152 KB Output is correct
13 Correct 250 ms 22136 KB Output is correct
14 Correct 1 ms 256 KB Output is correct
15 Correct 1 ms 256 KB Output is correct
16 Correct 6 ms 768 KB Output is correct
17 Correct 130 ms 12152 KB Output is correct
18 Correct 1 ms 256 KB Output is correct
19 Correct 1 ms 384 KB Output is correct
20 Correct 64 ms 5880 KB Output is correct
21 Correct 256 ms 22264 KB Output is correct
22 Correct 250 ms 22136 KB Output is correct
23 Correct 284 ms 22136 KB Output is correct
24 Correct 249 ms 22360 KB Output is correct
25 Correct 114 ms 12152 KB Output is correct
26 Correct 108 ms 12280 KB Output is correct
27 Correct 279 ms 22136 KB Output is correct
28 Correct 246 ms 22136 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 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 256 KB Output is correct
6 Correct 1 ms 256 KB Output is correct
7 Correct 1 ms 256 KB Output is correct
8 Correct 11 ms 1280 KB Output is correct
9 Correct 250 ms 22104 KB Output is correct
10 Correct 1 ms 256 KB Output is correct
11 Correct 1 ms 256 KB Output is correct
12 Correct 12 ms 1152 KB Output is correct
13 Correct 273 ms 22136 KB Output is correct
14 Correct 1 ms 256 KB Output is correct
15 Correct 0 ms 256 KB Output is correct
16 Correct 7 ms 768 KB Output is correct
17 Correct 132 ms 12152 KB Output is correct
18 Correct 0 ms 256 KB Output is correct
19 Correct 1 ms 256 KB Output is correct
20 Correct 1 ms 256 KB Output is correct
21 Correct 63 ms 6008 KB Output is correct
22 Correct 258 ms 22136 KB Output is correct
23 Correct 248 ms 22136 KB Output is correct
24 Correct 273 ms 22136 KB Output is correct
25 Correct 103 ms 12280 KB Output is correct
26 Correct 111 ms 12152 KB Output is correct
27 Correct 246 ms 22136 KB Output is correct
28 Correct 275 ms 22136 KB Output is correct
29 Correct 108 ms 12280 KB Output is correct

Subtask #4
35.0 / 35.0

# 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 65 ms 5880 KB Output is correct
5 Correct 256 ms 22136 KB Output is correct
6 Correct 248 ms 22100 KB Output is correct
7 Correct 278 ms 22136 KB Output is correct
8 Correct 1 ms 256 KB Output is correct
9 Correct 64 ms 5884 KB Output is correct
10 Correct 250 ms 22156 KB Output is correct
11 Correct 243 ms 22100 KB Output is correct
12 Correct 273 ms 22100 KB Output is correct
13 Correct 1 ms 384 KB Output is correct
14 Correct 1 ms 256 KB Output is correct
15 Correct 1 ms 256 KB Output is correct
16 Correct 64 ms 5880 KB Output is correct
17 Correct 252 ms 22136 KB Output is correct
18 Correct 256 ms 22136 KB Output is correct
19 Correct 247 ms 22136 KB Output is correct
20 Correct 242 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 1 ms 256 KB Output is correct
5 Correct 0 ms 256 KB Output is correct
6 Correct 12 ms 1280 KB Output is correct
7 Correct 283 ms 22100 KB Output is correct
8 Correct 1 ms 256 KB Output is correct
9 Correct 0 ms 256 KB Output is correct
10 Correct 1 ms 256 KB Output is correct
11 Correct 1 ms 256 KB Output is correct
12 Correct 11 ms 1152 KB Output is correct
13 Correct 250 ms 22136 KB Output is correct
14 Correct 1 ms 256 KB Output is correct
15 Correct 1 ms 256 KB Output is correct
16 Correct 6 ms 768 KB Output is correct
17 Correct 130 ms 12152 KB Output is correct
18 Correct 1 ms 256 KB Output is correct
19 Correct 1 ms 384 KB Output is correct
20 Correct 64 ms 5880 KB Output is correct
21 Correct 256 ms 22264 KB Output is correct
22 Correct 250 ms 22136 KB Output is correct
23 Correct 284 ms 22136 KB Output is correct
24 Correct 249 ms 22360 KB Output is correct
25 Correct 114 ms 12152 KB Output is correct
26 Correct 108 ms 12280 KB Output is correct
27 Correct 279 ms 22136 KB Output is correct
28 Correct 246 ms 22136 KB Output is correct
29 Correct 1 ms 256 KB Output is correct
30 Correct 1 ms 256 KB Output is correct
31 Correct 1 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 1 ms 256 KB Output is correct
35 Correct 1 ms 256 KB Output is correct
36 Correct 11 ms 1280 KB Output is correct
37 Correct 250 ms 22104 KB Output is correct
38 Correct 1 ms 256 KB Output is correct
39 Correct 1 ms 256 KB Output is correct
40 Correct 12 ms 1152 KB Output is correct
41 Correct 273 ms 22136 KB Output is correct
42 Correct 1 ms 256 KB Output is correct
43 Correct 0 ms 256 KB Output is correct
44 Correct 7 ms 768 KB Output is correct
45 Correct 132 ms 12152 KB Output is correct
46 Correct 0 ms 256 KB Output is correct
47 Correct 1 ms 256 KB Output is correct
48 Correct 1 ms 256 KB Output is correct
49 Correct 63 ms 6008 KB Output is correct
50 Correct 258 ms 22136 KB Output is correct
51 Correct 248 ms 22136 KB Output is correct
52 Correct 273 ms 22136 KB Output is correct
53 Correct 103 ms 12280 KB Output is correct
54 Correct 111 ms 12152 KB Output is correct
55 Correct 246 ms 22136 KB Output is correct
56 Correct 275 ms 22136 KB Output is correct
57 Correct 108 ms 12280 KB Output is correct
58 Correct 1 ms 256 KB Output is correct
59 Correct 1 ms 256 KB Output is correct
60 Correct 6 ms 768 KB Output is correct
61 Correct 134 ms 12248 KB Output is correct
62 Correct 0 ms 256 KB Output is correct
63 Correct 1 ms 384 KB Output is correct
64 Correct 1 ms 256 KB Output is correct
65 Correct 62 ms 5880 KB Output is correct
66 Correct 112 ms 12152 KB Output is correct
67 Correct 114 ms 12152 KB Output is correct
68 Correct 107 ms 12152 KB Output is correct
69 Correct 109 ms 12248 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 1 ms 256 KB Output is correct
5 Correct 0 ms 256 KB Output is correct
6 Correct 12 ms 1280 KB Output is correct
7 Correct 283 ms 22100 KB Output is correct
8 Correct 1 ms 256 KB Output is correct
9 Correct 0 ms 256 KB Output is correct
10 Correct 1 ms 256 KB Output is correct
11 Correct 1 ms 256 KB Output is correct
12 Correct 11 ms 1152 KB Output is correct
13 Correct 250 ms 22136 KB Output is correct
14 Correct 1 ms 256 KB Output is correct
15 Correct 1 ms 256 KB Output is correct
16 Correct 6 ms 768 KB Output is correct
17 Correct 130 ms 12152 KB Output is correct
18 Correct 1 ms 256 KB Output is correct
19 Correct 1 ms 384 KB Output is correct
20 Correct 64 ms 5880 KB Output is correct
21 Correct 256 ms 22264 KB Output is correct
22 Correct 250 ms 22136 KB Output is correct
23 Correct 284 ms 22136 KB Output is correct
24 Correct 249 ms 22360 KB Output is correct
25 Correct 114 ms 12152 KB Output is correct
26 Correct 108 ms 12280 KB Output is correct
27 Correct 279 ms 22136 KB Output is correct
28 Correct 246 ms 22136 KB Output is correct
29 Correct 1 ms 256 KB Output is correct
30 Correct 1 ms 256 KB Output is correct
31 Correct 1 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 1 ms 256 KB Output is correct
35 Correct 1 ms 256 KB Output is correct
36 Correct 11 ms 1280 KB Output is correct
37 Correct 250 ms 22104 KB Output is correct
38 Correct 1 ms 256 KB Output is correct
39 Correct 1 ms 256 KB Output is correct
40 Correct 12 ms 1152 KB Output is correct
41 Correct 273 ms 22136 KB Output is correct
42 Correct 1 ms 256 KB Output is correct
43 Correct 0 ms 256 KB Output is correct
44 Correct 7 ms 768 KB Output is correct
45 Correct 132 ms 12152 KB Output is correct
46 Correct 0 ms 256 KB Output is correct
47 Correct 1 ms 256 KB Output is correct
48 Correct 1 ms 256 KB Output is correct
49 Correct 63 ms 6008 KB Output is correct
50 Correct 258 ms 22136 KB Output is correct
51 Correct 248 ms 22136 KB Output is correct
52 Correct 273 ms 22136 KB Output is correct
53 Correct 103 ms 12280 KB Output is correct
54 Correct 111 ms 12152 KB Output is correct
55 Correct 246 ms 22136 KB Output is correct
56 Correct 275 ms 22136 KB Output is correct
57 Correct 108 ms 12280 KB Output is correct
58 Correct 1 ms 256 KB Output is correct
59 Correct 1 ms 256 KB Output is correct
60 Correct 1 ms 256 KB Output is correct
61 Correct 65 ms 5880 KB Output is correct
62 Correct 256 ms 22136 KB Output is correct
63 Correct 248 ms 22100 KB Output is correct
64 Correct 278 ms 22136 KB Output is correct
65 Correct 1 ms 256 KB Output is correct
66 Correct 64 ms 5884 KB Output is correct
67 Correct 250 ms 22156 KB Output is correct
68 Correct 243 ms 22100 KB Output is correct
69 Correct 273 ms 22100 KB Output is correct
70 Correct 1 ms 384 KB Output is correct
71 Correct 1 ms 256 KB Output is correct
72 Correct 1 ms 256 KB Output is correct
73 Correct 64 ms 5880 KB Output is correct
74 Correct 252 ms 22136 KB Output is correct
75 Correct 256 ms 22136 KB Output is correct
76 Correct 247 ms 22136 KB Output is correct
77 Correct 242 ms 22136 KB Output is correct
78 Correct 1 ms 256 KB Output is correct
79 Correct 1 ms 256 KB Output is correct
80 Correct 6 ms 768 KB Output is correct
81 Correct 134 ms 12248 KB Output is correct
82 Correct 0 ms 256 KB Output is correct
83 Correct 1 ms 384 KB Output is correct
84 Correct 1 ms 256 KB Output is correct
85 Correct 62 ms 5880 KB Output is correct
86 Correct 112 ms 12152 KB Output is correct
87 Correct 114 ms 12152 KB Output is correct
88 Correct 107 ms 12152 KB Output is correct
89 Correct 109 ms 12248 KB Output is correct
90 Correct 0 ms 256 KB Output is correct
91 Correct 1 ms 256 KB Output is correct
92 Correct 5 ms 768 KB Output is correct
93 Correct 124 ms 12116 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 26 ms 3328 KB Output is correct
98 Correct 106 ms 12152 KB Output is correct
99 Correct 111 ms 12280 KB Output is correct
100 Correct 104 ms 12152 KB Output is correct
101 Correct 101 ms 12152 KB Output is correct
102 Correct 120 ms 12124 KB Output is correct
103 Correct 120 ms 12152 KB Output is correct
104 Correct 121 ms 12116 KB Output is correct
105 Correct 124 ms 12156 KB Output is correct