oj.uz

Submission #1084282

# Submission time Handle Problem Language Result Execution time Memory
1084282 2024-09-05T18:14:05 Z Tymond Connecting Supertrees (IOI20_supertrees) C++17
100 / 100
 177 ms 31472 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[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 344 KB Output is correct
2 Correct 0 ms 344 KB Output is correct
3 Correct 0 ms 344 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 1 ms 348 KB Output is correct
6 Correct 6 ms 2252 KB Output is correct
7 Correct 133 ms 31472 KB Output is correct

Subtask #2
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 344 KB Output is correct
2 Correct 0 ms 344 KB Output is correct
3 Correct 0 ms 344 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 1 ms 348 KB Output is correct
6 Correct 6 ms 2252 KB Output is correct
7 Correct 133 ms 31472 KB Output is correct
8 Correct 1 ms 344 KB Output is correct
9 Correct 0 ms 348 KB Output is correct
10 Correct 0 ms 348 KB Output is correct
11 Correct 1 ms 348 KB Output is correct
12 Correct 8 ms 1992 KB Output is correct
13 Correct 177 ms 27476 KB Output is correct
14 Correct 1 ms 348 KB Output is correct
15 Correct 0 ms 348 KB Output is correct
16 Correct 3 ms 1736 KB Output is correct
17 Correct 66 ms 19976 KB Output is correct
18 Correct 0 ms 348 KB Output is correct
19 Correct 0 ms 344 KB Output is correct
20 Correct 38 ms 8284 KB Output is correct
21 Correct 145 ms 27988 KB Output is correct
22 Correct 161 ms 27488 KB Output is correct
23 Correct 143 ms 29368 KB Output is correct
24 Correct 170 ms 27440 KB Output is correct
25 Correct 68 ms 18036 KB Output is correct
26 Correct 54 ms 17448 KB Output is correct
27 Correct 142 ms 30296 KB Output is correct
28 Correct 167 ms 27304 KB Output is correct

Subtask #3
19.0 / 19.0

# 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 0 ms 348 KB Output is correct
4 Correct 1 ms 348 KB Output is correct
5 Correct 0 ms 476 KB Output is correct
6 Correct 0 ms 348 KB Output is correct
7 Correct 0 ms 348 KB Output is correct
8 Correct 8 ms 2140 KB Output is correct
9 Correct 172 ms 27344 KB Output is correct
10 Correct 0 ms 344 KB Output is correct
11 Correct 0 ms 348 KB Output is correct
12 Correct 6 ms 2312 KB Output is correct
13 Correct 139 ms 31316 KB Output is correct
14 Correct 0 ms 344 KB Output is correct
15 Correct 1 ms 348 KB Output is correct
16 Correct 3 ms 1936 KB Output is correct
17 Correct 78 ms 19768 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 36 ms 8272 KB Output is correct
22 Correct 141 ms 27988 KB Output is correct
23 Correct 147 ms 27476 KB Output is correct
24 Correct 153 ms 30552 KB Output is correct
25 Correct 86 ms 17488 KB Output is correct
26 Correct 58 ms 18000 KB Output is correct
27 Correct 155 ms 27340 KB Output is correct
28 Correct 144 ms 29272 KB Output is correct
29 Correct 86 ms 17496 KB Output is correct

Subtask #4
35.0 / 35.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 604 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 35 ms 8296 KB Output is correct
5 Correct 145 ms 27848 KB Output is correct
6 Correct 166 ms 27332 KB Output is correct
7 Correct 147 ms 29264 KB Output is correct
8 Correct 0 ms 348 KB Output is correct
9 Correct 36 ms 8348 KB Output is correct
10 Correct 155 ms 27916 KB Output is correct
11 Correct 149 ms 27544 KB Output is correct
12 Correct 143 ms 30460 KB Output is correct
13 Correct 0 ms 344 KB Output is correct
14 Correct 0 ms 348 KB Output is correct
15 Correct 0 ms 348 KB Output is correct
16 Correct 37 ms 8352 KB Output is correct
17 Correct 144 ms 27924 KB Output is correct
18 Correct 155 ms 27980 KB Output is correct
19 Correct 171 ms 27480 KB Output is correct
20 Correct 171 ms 27472 KB Output is correct

Subtask #5
21.0 / 21.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 344 KB Output is correct
2 Correct 0 ms 344 KB Output is correct
3 Correct 0 ms 344 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 1 ms 348 KB Output is correct
6 Correct 6 ms 2252 KB Output is correct
7 Correct 133 ms 31472 KB Output is correct
8 Correct 1 ms 344 KB Output is correct
9 Correct 0 ms 348 KB Output is correct
10 Correct 0 ms 348 KB Output is correct
11 Correct 1 ms 348 KB Output is correct
12 Correct 8 ms 1992 KB Output is correct
13 Correct 177 ms 27476 KB Output is correct
14 Correct 1 ms 348 KB Output is correct
15 Correct 0 ms 348 KB Output is correct
16 Correct 3 ms 1736 KB Output is correct
17 Correct 66 ms 19976 KB Output is correct
18 Correct 0 ms 348 KB Output is correct
19 Correct 0 ms 344 KB Output is correct
20 Correct 38 ms 8284 KB Output is correct
21 Correct 145 ms 27988 KB Output is correct
22 Correct 161 ms 27488 KB Output is correct
23 Correct 143 ms 29368 KB Output is correct
24 Correct 170 ms 27440 KB Output is correct
25 Correct 68 ms 18036 KB Output is correct
26 Correct 54 ms 17448 KB Output is correct
27 Correct 142 ms 30296 KB Output is correct
28 Correct 167 ms 27304 KB Output is correct
29 Correct 0 ms 348 KB Output is correct
30 Correct 0 ms 348 KB Output is correct
31 Correct 0 ms 348 KB Output is correct
32 Correct 1 ms 348 KB Output is correct
33 Correct 0 ms 476 KB Output is correct
34 Correct 0 ms 348 KB Output is correct
35 Correct 0 ms 348 KB Output is correct
36 Correct 8 ms 2140 KB Output is correct
37 Correct 172 ms 27344 KB Output is correct
38 Correct 0 ms 344 KB Output is correct
39 Correct 0 ms 348 KB Output is correct
40 Correct 6 ms 2312 KB Output is correct
41 Correct 139 ms 31316 KB Output is correct
42 Correct 0 ms 344 KB Output is correct
43 Correct 1 ms 348 KB Output is correct
44 Correct 3 ms 1936 KB Output is correct
45 Correct 78 ms 19768 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 36 ms 8272 KB Output is correct
50 Correct 141 ms 27988 KB Output is correct
51 Correct 147 ms 27476 KB Output is correct
52 Correct 153 ms 30552 KB Output is correct
53 Correct 86 ms 17488 KB Output is correct
54 Correct 58 ms 18000 KB Output is correct
55 Correct 155 ms 27340 KB Output is correct
56 Correct 144 ms 29272 KB Output is correct
57 Correct 86 ms 17496 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 64 ms 21356 KB Output is correct
62 Correct 0 ms 344 KB Output is correct
63 Correct 0 ms 348 KB Output is correct
64 Correct 0 ms 348 KB Output is correct
65 Correct 36 ms 8356 KB Output is correct
66 Correct 56 ms 18004 KB Output is correct
67 Correct 71 ms 18008 KB Output is correct
68 Correct 56 ms 17536 KB Output is correct
69 Correct 52 ms 17460 KB Output is correct

Subtask #6
4.0 / 4.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 344 KB Output is correct
2 Correct 0 ms 344 KB Output is correct
3 Correct 0 ms 344 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 1 ms 348 KB Output is correct
6 Correct 6 ms 2252 KB Output is correct
7 Correct 133 ms 31472 KB Output is correct
8 Correct 1 ms 344 KB Output is correct
9 Correct 0 ms 348 KB Output is correct
10 Correct 0 ms 348 KB Output is correct
11 Correct 1 ms 348 KB Output is correct
12 Correct 8 ms 1992 KB Output is correct
13 Correct 177 ms 27476 KB Output is correct
14 Correct 1 ms 348 KB Output is correct
15 Correct 0 ms 348 KB Output is correct
16 Correct 3 ms 1736 KB Output is correct
17 Correct 66 ms 19976 KB Output is correct
18 Correct 0 ms 348 KB Output is correct
19 Correct 0 ms 344 KB Output is correct
20 Correct 38 ms 8284 KB Output is correct
21 Correct 145 ms 27988 KB Output is correct
22 Correct 161 ms 27488 KB Output is correct
23 Correct 143 ms 29368 KB Output is correct
24 Correct 170 ms 27440 KB Output is correct
25 Correct 68 ms 18036 KB Output is correct
26 Correct 54 ms 17448 KB Output is correct
27 Correct 142 ms 30296 KB Output is correct
28 Correct 167 ms 27304 KB Output is correct
29 Correct 0 ms 348 KB Output is correct
30 Correct 0 ms 348 KB Output is correct
31 Correct 0 ms 348 KB Output is correct
32 Correct 1 ms 348 KB Output is correct
33 Correct 0 ms 476 KB Output is correct
34 Correct 0 ms 348 KB Output is correct
35 Correct 0 ms 348 KB Output is correct
36 Correct 8 ms 2140 KB Output is correct
37 Correct 172 ms 27344 KB Output is correct
38 Correct 0 ms 344 KB Output is correct
39 Correct 0 ms 348 KB Output is correct
40 Correct 6 ms 2312 KB Output is correct
41 Correct 139 ms 31316 KB Output is correct
42 Correct 0 ms 344 KB Output is correct
43 Correct 1 ms 348 KB Output is correct
44 Correct 3 ms 1936 KB Output is correct
45 Correct 78 ms 19768 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 36 ms 8272 KB Output is correct
50 Correct 141 ms 27988 KB Output is correct
51 Correct 147 ms 27476 KB Output is correct
52 Correct 153 ms 30552 KB Output is correct
53 Correct 86 ms 17488 KB Output is correct
54 Correct 58 ms 18000 KB Output is correct
55 Correct 155 ms 27340 KB Output is correct
56 Correct 144 ms 29272 KB Output is correct
57 Correct 86 ms 17496 KB Output is correct
58 Correct 0 ms 604 KB Output is correct
59 Correct 0 ms 348 KB Output is correct
60 Correct 0 ms 348 KB Output is correct
61 Correct 35 ms 8296 KB Output is correct
62 Correct 145 ms 27848 KB Output is correct
63 Correct 166 ms 27332 KB Output is correct
64 Correct 147 ms 29264 KB Output is correct
65 Correct 0 ms 348 KB Output is correct
66 Correct 36 ms 8348 KB Output is correct
67 Correct 155 ms 27916 KB Output is correct
68 Correct 149 ms 27544 KB Output is correct
69 Correct 143 ms 30460 KB Output is correct
70 Correct 0 ms 344 KB Output is correct
71 Correct 0 ms 348 KB Output is correct
72 Correct 0 ms 348 KB Output is correct
73 Correct 37 ms 8352 KB Output is correct
74 Correct 144 ms 27924 KB Output is correct
75 Correct 155 ms 27980 KB Output is correct
76 Correct 171 ms 27480 KB Output is correct
77 Correct 171 ms 27472 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 64 ms 21356 KB Output is correct
82 Correct 0 ms 344 KB Output is correct
83 Correct 0 ms 348 KB Output is correct
84 Correct 0 ms 348 KB Output is correct
85 Correct 36 ms 8356 KB Output is correct
86 Correct 56 ms 18004 KB Output is correct
87 Correct 71 ms 18008 KB Output is correct
88 Correct 56 ms 17536 KB Output is correct
89 Correct 52 ms 17460 KB Output is correct
90 Correct 0 ms 344 KB Output is correct
91 Correct 0 ms 348 KB Output is correct
92 Correct 3 ms 1884 KB Output is correct
93 Correct 60 ms 21424 KB Output is correct
94 Correct 0 ms 344 KB Output is correct
95 Correct 1 ms 348 KB Output is correct
96 Correct 0 ms 348 KB Output is correct
97 Correct 16 ms 5928 KB Output is correct
98 Correct 55 ms 18028 KB Output is correct
99 Correct 74 ms 17964 KB Output is correct
100 Correct 67 ms 17744 KB Output is correct
101 Correct 76 ms 17488 KB Output is correct
102 Correct 66 ms 21588 KB Output is correct
103 Correct 72 ms 22176 KB Output is correct
104 Correct 65 ms 22100 KB Output is correct
105 Correct 65 ms 20708 KB Output is correct