oj.uz

Submission #1084271

# Submission time Handle Problem Language Result Execution time Memory
1084271 2024-09-05T17:55:27 Z Tymond Connecting Supertrees (IOI20_supertrees) C++17
96 / 100
 205 ms 32084 KB 
#include <bits/stdc++.h>
#include "supertrees.h"
using namespace std;
using ll = long long;
using ld = long double;
#define fi first
#define se second
#define vi vector<int>
#define vll vector<long long>
#define pii pair<int, int>
#define pll pair<long long, long long>
#define pb push_back
#define mp make_pair
#define eb emplace_back
#define all(x) (x).begin(), (x).end()
#define sz(x) (int)(x).size()
mt19937 rng(chrono::steady_clock::now().time_since_epoch().count());
mt19937_64 rng64(chrono::steady_clock::now().time_since_epoch().count());
inline int rand(int l,int r){return uniform_int_distribution<int>(l, r)(rng);}
inline ll rand(ll l,ll r){return uniform_int_distribution<ll>(l, r)(rng64);}
#ifdef DEBUG
auto&operator<<(auto&o,pair<auto,auto>p){return o<<"("<<p.first<<", "<<p.second<<")";}
auto operator<<(auto&o,auto x)->decltype(x.end(),o){o<<"{";int i=0;for(auto e:x)o<<","+!i++<<e;return o<<"}";}
#define debug(X...)cerr<<"["#X"]: ",[](auto...$){((cerr<<$<<"; "),...)<<endl;}(X)
#else
#define debug(...){}
#endif

struct custom_hash {
    static uint64_t splitmix64(uint64_t x) {
        x += 0x9e3779b97f4a7c15;
        x = (x ^ (x >> 30)) * 0xbf58476d1ce4e5b9;
        x = (x ^ (x >> 27)) * 0x94d049bb133111eb;
        return x ^ (x >> 31);
    }

    size_t operator()(uint64_t x) const {
        static const uint64_t FIXED_RANDOM = chrono::steady_clock::now().time_since_epoch().count();
        return splitmix64(x + FIXED_RANDOM);
    }
};

const int MAXN = 1e3 + 7;
int vis[MAXN];
int p[MAXN][MAXN];
vi g[MAXN];
int n;
vector<vi> ans;

vi akt;
map<int, int> cnt;
void getOthers(int v){
    queue<int> q;
    q.push(v);
    vis[v] = 1;
    while(sz(q)){
        v = q.front();
        q.pop();

        cnt[v] = 1;
        akt.pb(v);
        for(auto u : g[v]){
            if(!vis[u]){
                vis[u] = 1;
                q.push(u);
            }
        }
    }
}

/*void build(vector<vi> xd){
    for(int i = 0; i < sz(xd); i++){
        for(auto ele : xd[i]){
            cout << ele << ' ';
        }
        cout << '\n';
    }
}*/

int construct(vector<vi> given) {
    n = sz(given);
    ans.resize(n);
    for(int i = 0; i < n; i++){
        ans[i].assign(n, 0);
        for(int j = 0; j < n; j++){
            p[i][j] = given[i][j];
            if(p[i][j] > 0 && i != j){
                g[i].pb(j);
            }
        }
    }

    for(int i = 0; i < n; i++){
        if(!vis[i]){
            akt.clear();
            cnt.clear();
            getOthers(i);

            int mx = 0;
            int was[4] = {0, 0, 0, 0};
            for(auto ele : akt){
                for(int x = 0; x < n; x++){
                    if(x != ele && p[ele][x] == 0 && cnt[x]){
                        return 0;
                    }
                    if(cnt[x]){
                        was[p[ele][x]]++;
                        mx = max(mx, p[ele][x]);
                    }
                }
            }

            if(mx == 1){
                for(int x = 0; x < sz(akt) - 1; x++){
                    ans[akt[x]][akt[x + 1]] = 1;
                    ans[akt[x + 1]][akt[x]] = 1;
                }
                continue;
            }

            if(was[2] && was[3]){
                return 0;
            }

            map<int, int> f;
            vector<vi> groups;
            int k = 0;
            for(auto ele : akt){
                if(f[ele]){
                    continue;
                }
                groups.pb({ele});
                queue<int> q;
                q.push(ele);
                f[ele] = 1;
                while(sz(q)){
                    int v = q.front();
                    q.pop();

                    for(auto u : g[v]){
                        if(!f[u] && p[ele][u] == 1){
                            f[u] = 1;
                            groups[k].pb(u);
                            q.push(u);
                        }
                    }
                }

                for(int j = 0; j < sz(groups[k]); j++){
                    //cout << groups[k][j] << ' ';
                    if(j + 1 < sz(groups[k])){
                        ans[groups[k][j]][groups[k][j + 1]] = 1;
                        ans[groups[k][j + 1]][groups[k][j]] = 1;
                    }
                    for(int x = j + 1; x < sz(groups[k]); x++){
                        if(p[groups[k][x]][groups[k][j]] != 1){
                            return 0;
                        }
                    }
                }
                //cout << '\n';
                k++;
            }

            if(k == 2){
                return 0;
            }

            for(int j = 0; j + 1 < k; j++){
                ans[groups[j][0]][groups[j + 1][0]] = 1;
                ans[groups[j + 1][0]][groups[j][0]] = 1;
            }
            ans[groups[k - 1][0]][groups[0][0]] = 1;
            ans[groups[0][0]][groups[k - 1][0]] = 1;
        }
    }


    build(ans);
    return 1;
}

/*int main(){
    cout << construct({{1, 1, 2, 2}, {1, 1, 2, 2}, {2, 2, 1, 2}, {2, 2, 2, 1}}) << '\n';
}*/

Subtask #1
11.0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 348 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 7 ms 2396 KB Output is correct
7 Correct 129 ms 32084 KB Output is correct

Subtask #2
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 348 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 7 ms 2396 KB Output is correct
7 Correct 129 ms 32084 KB Output is correct
8 Correct 1 ms 344 KB Output is correct
9 Correct 1 ms 348 KB Output is correct
10 Correct 0 ms 348 KB Output is correct
11 Correct 0 ms 344 KB Output is correct
12 Correct 7 ms 2168 KB Output is correct
13 Correct 203 ms 27976 KB Output is correct
14 Correct 0 ms 344 KB Output is correct
15 Correct 0 ms 348 KB Output is correct
16 Correct 3 ms 1740 KB Output is correct
17 Correct 64 ms 20688 KB Output is correct
18 Correct 0 ms 344 KB Output is correct
19 Correct 0 ms 348 KB Output is correct
20 Correct 37 ms 8276 KB Output is correct
21 Correct 170 ms 28588 KB Output is correct
22 Correct 192 ms 27948 KB Output is correct
23 Correct 151 ms 30032 KB Output is correct
24 Correct 177 ms 28076 KB Output is correct
25 Correct 64 ms 18716 KB Output is correct
26 Correct 78 ms 18260 KB Output is correct
27 Correct 139 ms 31064 KB Output is correct
28 Correct 181 ms 27988 KB Output is correct

Subtask #3
19.0 / 19.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 344 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 1 ms 344 KB Output is correct
6 Correct 0 ms 348 KB Output is correct
7 Correct 1 ms 344 KB Output is correct
8 Correct 8 ms 2140 KB Output is correct
9 Correct 178 ms 28064 KB Output is correct
10 Correct 1 ms 348 KB Output is correct
11 Correct 0 ms 348 KB Output is correct
12 Correct 9 ms 2396 KB Output is correct
13 Correct 182 ms 32044 KB Output is correct
14 Correct 0 ms 348 KB Output is correct
15 Correct 0 ms 348 KB Output is correct
16 Correct 4 ms 1736 KB Output is correct
17 Correct 66 ms 20292 KB Output is correct
18 Correct 0 ms 348 KB Output is correct
19 Correct 0 ms 348 KB Output is correct
20 Correct 0 ms 348 KB Output is correct
21 Correct 52 ms 8404 KB Output is correct
22 Correct 142 ms 28332 KB Output is correct
23 Correct 163 ms 27964 KB Output is correct
24 Correct 160 ms 30804 KB Output is correct
25 Correct 89 ms 18000 KB Output is correct
26 Correct 59 ms 18516 KB Output is correct
27 Correct 150 ms 27728 KB Output is correct
28 Correct 145 ms 29744 KB Output is correct
29 Correct 86 ms 17748 KB Output is correct

Subtask #4
35.0 / 35.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 1 ms 348 KB Output is correct
4 Correct 38 ms 8300 KB Output is correct
5 Correct 151 ms 28244 KB Output is correct
6 Correct 165 ms 27732 KB Output is correct
7 Correct 139 ms 29780 KB Output is correct
8 Correct 0 ms 344 KB Output is correct
9 Correct 37 ms 8276 KB Output is correct
10 Correct 143 ms 28244 KB Output is correct
11 Correct 205 ms 27728 KB Output is correct
12 Correct 146 ms 30804 KB Output is correct
13 Correct 0 ms 348 KB Output is correct
14 Correct 0 ms 348 KB Output is correct
15 Correct 1 ms 348 KB Output is correct
16 Correct 44 ms 8216 KB Output is correct
17 Correct 161 ms 28288 KB Output is correct
18 Correct 150 ms 28240 KB Output is correct
19 Correct 153 ms 27928 KB Output is correct
20 Correct 182 ms 27732 KB Output is correct

Subtask #5
21.0 / 21.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 348 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 7 ms 2396 KB Output is correct
7 Correct 129 ms 32084 KB Output is correct
8 Correct 1 ms 344 KB Output is correct
9 Correct 1 ms 348 KB Output is correct
10 Correct 0 ms 348 KB Output is correct
11 Correct 0 ms 344 KB Output is correct
12 Correct 7 ms 2168 KB Output is correct
13 Correct 203 ms 27976 KB Output is correct
14 Correct 0 ms 344 KB Output is correct
15 Correct 0 ms 348 KB Output is correct
16 Correct 3 ms 1740 KB Output is correct
17 Correct 64 ms 20688 KB Output is correct
18 Correct 0 ms 344 KB Output is correct
19 Correct 0 ms 348 KB Output is correct
20 Correct 37 ms 8276 KB Output is correct
21 Correct 170 ms 28588 KB Output is correct
22 Correct 192 ms 27948 KB Output is correct
23 Correct 151 ms 30032 KB Output is correct
24 Correct 177 ms 28076 KB Output is correct
25 Correct 64 ms 18716 KB Output is correct
26 Correct 78 ms 18260 KB Output is correct
27 Correct 139 ms 31064 KB Output is correct
28 Correct 181 ms 27988 KB Output is correct
29 Correct 1 ms 344 KB Output is correct
30 Correct 0 ms 348 KB Output is correct
31 Correct 0 ms 348 KB Output is correct
32 Correct 0 ms 348 KB Output is correct
33 Correct 1 ms 344 KB Output is correct
34 Correct 0 ms 348 KB Output is correct
35 Correct 1 ms 344 KB Output is correct
36 Correct 8 ms 2140 KB Output is correct
37 Correct 178 ms 28064 KB Output is correct
38 Correct 1 ms 348 KB Output is correct
39 Correct 0 ms 348 KB Output is correct
40 Correct 9 ms 2396 KB Output is correct
41 Correct 182 ms 32044 KB Output is correct
42 Correct 0 ms 348 KB Output is correct
43 Correct 0 ms 348 KB Output is correct
44 Correct 4 ms 1736 KB Output is correct
45 Correct 66 ms 20292 KB Output is correct
46 Correct 0 ms 348 KB Output is correct
47 Correct 0 ms 348 KB Output is correct
48 Correct 0 ms 348 KB Output is correct
49 Correct 52 ms 8404 KB Output is correct
50 Correct 142 ms 28332 KB Output is correct
51 Correct 163 ms 27964 KB Output is correct
52 Correct 160 ms 30804 KB Output is correct
53 Correct 89 ms 18000 KB Output is correct
54 Correct 59 ms 18516 KB Output is correct
55 Correct 150 ms 27728 KB Output is correct
56 Correct 145 ms 29744 KB Output is correct
57 Correct 86 ms 17748 KB Output is correct
58 Correct 0 ms 348 KB Output is correct
59 Correct 0 ms 348 KB Output is correct
60 Correct 3 ms 1884 KB Output is correct
61 Correct 62 ms 21956 KB Output is correct
62 Correct 1 ms 344 KB Output is correct
63 Correct 0 ms 348 KB Output is correct
64 Correct 0 ms 344 KB Output is correct
65 Correct 47 ms 8276 KB Output is correct
66 Correct 60 ms 18436 KB Output is correct
67 Correct 64 ms 18516 KB Output is correct
68 Correct 56 ms 18004 KB Output is correct
69 Correct 54 ms 17748 KB Output is correct

Subtask #6
0 / 4.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 348 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 7 ms 2396 KB Output is correct
7 Correct 129 ms 32084 KB Output is correct
8 Correct 1 ms 344 KB Output is correct
9 Correct 1 ms 348 KB Output is correct
10 Correct 0 ms 348 KB Output is correct
11 Correct 0 ms 344 KB Output is correct
12 Correct 7 ms 2168 KB Output is correct
13 Correct 203 ms 27976 KB Output is correct
14 Correct 0 ms 344 KB Output is correct
15 Correct 0 ms 348 KB Output is correct
16 Correct 3 ms 1740 KB Output is correct
17 Correct 64 ms 20688 KB Output is correct
18 Correct 0 ms 344 KB Output is correct
19 Correct 0 ms 348 KB Output is correct
20 Correct 37 ms 8276 KB Output is correct
21 Correct 170 ms 28588 KB Output is correct
22 Correct 192 ms 27948 KB Output is correct
23 Correct 151 ms 30032 KB Output is correct
24 Correct 177 ms 28076 KB Output is correct
25 Correct 64 ms 18716 KB Output is correct
26 Correct 78 ms 18260 KB Output is correct
27 Correct 139 ms 31064 KB Output is correct
28 Correct 181 ms 27988 KB Output is correct
29 Correct 1 ms 344 KB Output is correct
30 Correct 0 ms 348 KB Output is correct
31 Correct 0 ms 348 KB Output is correct
32 Correct 0 ms 348 KB Output is correct
33 Correct 1 ms 344 KB Output is correct
34 Correct 0 ms 348 KB Output is correct
35 Correct 1 ms 344 KB Output is correct
36 Correct 8 ms 2140 KB Output is correct
37 Correct 178 ms 28064 KB Output is correct
38 Correct 1 ms 348 KB Output is correct
39 Correct 0 ms 348 KB Output is correct
40 Correct 9 ms 2396 KB Output is correct
41 Correct 182 ms 32044 KB Output is correct
42 Correct 0 ms 348 KB Output is correct
43 Correct 0 ms 348 KB Output is correct
44 Correct 4 ms 1736 KB Output is correct
45 Correct 66 ms 20292 KB Output is correct
46 Correct 0 ms 348 KB Output is correct
47 Correct 0 ms 348 KB Output is correct
48 Correct 0 ms 348 KB Output is correct
49 Correct 52 ms 8404 KB Output is correct
50 Correct 142 ms 28332 KB Output is correct
51 Correct 163 ms 27964 KB Output is correct
52 Correct 160 ms 30804 KB Output is correct
53 Correct 89 ms 18000 KB Output is correct
54 Correct 59 ms 18516 KB Output is correct
55 Correct 150 ms 27728 KB Output is correct
56 Correct 145 ms 29744 KB Output is correct
57 Correct 86 ms 17748 KB Output is correct
58 Correct 0 ms 348 KB Output is correct
59 Correct 0 ms 348 KB Output is correct
60 Correct 1 ms 348 KB Output is correct
61 Correct 38 ms 8300 KB Output is correct
62 Correct 151 ms 28244 KB Output is correct
63 Correct 165 ms 27732 KB Output is correct
64 Correct 139 ms 29780 KB Output is correct
65 Correct 0 ms 344 KB Output is correct
66 Correct 37 ms 8276 KB Output is correct
67 Correct 143 ms 28244 KB Output is correct
68 Correct 205 ms 27728 KB Output is correct
69 Correct 146 ms 30804 KB Output is correct
70 Correct 0 ms 348 KB Output is correct
71 Correct 0 ms 348 KB Output is correct
72 Correct 1 ms 348 KB Output is correct
73 Correct 44 ms 8216 KB Output is correct
74 Correct 161 ms 28288 KB Output is correct
75 Correct 150 ms 28240 KB Output is correct
76 Correct 153 ms 27928 KB Output is correct
77 Correct 182 ms 27732 KB Output is correct
78 Correct 0 ms 348 KB Output is correct
79 Correct 0 ms 348 KB Output is correct
80 Correct 3 ms 1884 KB Output is correct
81 Correct 62 ms 21956 KB Output is correct
82 Correct 1 ms 344 KB Output is correct
83 Correct 0 ms 348 KB Output is correct
84 Correct 0 ms 344 KB Output is correct
85 Correct 47 ms 8276 KB Output is correct
86 Correct 60 ms 18436 KB Output is correct
87 Correct 64 ms 18516 KB Output is correct
88 Correct 56 ms 18004 KB Output is correct
89 Correct 54 ms 17748 KB Output is correct
90 Correct 0 ms 348 KB Output is correct
91 Correct 0 ms 348 KB Output is correct
92 Correct 3 ms 2000 KB Output is correct
93 Correct 63 ms 22016 KB Output is correct
94 Correct 1 ms 344 KB Output is correct
95 Correct 0 ms 348 KB Output is correct
96 Correct 0 ms 348 KB Output is correct
97 Correct 23 ms 5976 KB Output is correct
98 Correct 54 ms 18556 KB Output is correct
99 Correct 74 ms 18604 KB Output is correct
100 Correct 83 ms 18260 KB Output is correct
101 Correct 72 ms 18256 KB Output is correct
102 Incorrect 173 ms 32012 KB Answer gives possible 1 while actual possible 0
103 Halted 0 ms 0 KB -