oj.uz

Submission #1022340

# Submission time Handle Problem Language Result Execution time Memory
1022340 2024-07-13T12:09:05 Z vjudge1 Hiperkocka (COCI21_hiperkocka) C++17
110 / 110
 53 ms 3920 KB 
#include <bits/stdc++.h>
using namespace std;

const int N = 20;
int n, path[N];
vector<int> g[N];
vector<pair<int, int>> edges;

void dfs(int v, int p = -1){
    for (int e : g[v]){
        int u = edges[e].first + edges[e].second - v;
        if (u == p) continue;
        path[u] = path[v] ^ (1 << e);
        dfs(u, v);
    }
}

int main(){
    ios_base::sync_with_stdio(0);
    cin.tie(0); cout.tie(0);

    cin >> n;
    for (int i = 0; i < n; i ++){
        int u, v;
        cin >> u >> v;

        g[u].push_back(i);
        g[v].push_back(i);
        edges.push_back({u, v});
    }

    dfs(0);
    cout << (1 << (n - 1)) << endl;
    for (int r = 0; r < (1 << n); r ++){
        if (__builtin_popcount(r) % 2) continue;
        for (int i = 0; i <= n; i ++)
            cout << (path[i] ^ r) << " ";
        cout << '\n';
    }
}

Subtask #1
110.0 / 110.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 344 KB Output is correct
2 Correct 1 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 348 KB Output is correct
6 Correct 0 ms 348 KB Output is correct
7 Correct 1 ms 348 KB Output is correct
8 Correct 1 ms 348 KB Output is correct
9 Correct 38 ms 3920 KB Output is correct
10 Correct 3 ms 604 KB Output is correct
11 Correct 12 ms 1116 KB Output is correct
12 Correct 31 ms 3672 KB Output is correct
13 Correct 1 ms 348 KB Output is correct
14 Correct 29 ms 3664 KB Output is correct
15 Correct 14 ms 1744 KB Output is correct
16 Correct 14 ms 1112 KB Output is correct
17 Correct 29 ms 3528 KB Output is correct
18 Correct 53 ms 3664 KB Output is correct
19 Correct 30 ms 3668 KB Output is correct
20 Correct 50 ms 3696 KB Output is correct
21 Correct 1 ms 344 KB Output is correct
22 Correct 29 ms 3524 KB Output is correct
23 Correct 41 ms 3664 KB Output is correct
24 Correct 31 ms 3668 KB Output is correct
25 Correct 40 ms 3568 KB Output is correct
26 Correct 20 ms 1884 KB Output is correct