oj.uz

Submission #513199

# Submission time Handle Problem Language Result Execution time Memory
513199 2022-01-17T04:01:23 Z fcmalkcin Hiperkocka (COCI21_hiperkocka) C++17
110 / 110
 46 ms 10632 KB 
/*#pragma GCC optimize("Ofast")
#pragma GCC optimization("unroll-loops, no-stack-protector")
#pragma GCC target("avx,avx2,fma")*/

#include <bits/stdc++.h>
using namespace std;

#define ll  long long
#define pll pair<ll,ll>
#define ff first
#define ss second
#define pb push_back
#define endl "\n"
#define fff(i,a,b) for (ll i=a;i<=b;i++)

mt19937 rnd(chrono::steady_clock::now().time_since_epoch().count());

const ll maxn=3e5+40;
const ll mod=998244353 ;
const ll base=317;

/// you will be the best but now you just are trash
/// goal 5/7

vector<ll> adj[maxn];
ll val[maxn];
ll cnt=-1;
void dfs(ll u,ll par,ll nw)
{
   val[u]=nw;
   for (auto to:adj[u])
   {
       if (to==par) continue;
       cnt++;
       dfs(to,u,nw^(1ll<<cnt));
   }
}
int main()
{
    ios_base::sync_with_stdio(false);
    cin.tie(0);
    cout.tie(0);
    if (fopen("t.inp", "r"))
    {
        freopen("test.inp", "r", stdin);
        freopen("test.out", "w", stdout);
    }
    ll n;
    cin>> n;
    for (int i=1;i<=n;i++)
    {
        ll x, y;
        cin>>x>> y;
        adj[x].pb(y);
        adj[y].pb(x);
    }
    cout <<(1ll<<(n-1))<<endl;
    for (int i=0;i<(1ll<<n);i++)
    {
        cnt=-1;
        ll h=__builtin_popcount(i);
        if (h%2==0)
        {
            dfs(0,-1,i);
        for (int i=0;i<=n;i++) cout <<val[i]<<" ";
        cout <<endl;
        }
    }
}

Compilation message

Main.cpp: In function 'int main()':
Main.cpp:45:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   45 |         freopen("test.inp", "r", stdin);
      |         ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~
Main.cpp:46:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   46 |         freopen("test.out", "w", stdout);
      |         ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~

Subtask #1
110.0 / 110.0

# Verdict Execution time Memory Grader output
1 Correct 4 ms 7244 KB Output is correct
2 Correct 5 ms 7372 KB Output is correct
3 Correct 4 ms 7324 KB Output is correct
4 Correct 4 ms 7372 KB Output is correct
5 Correct 4 ms 7372 KB Output is correct
6 Correct 4 ms 7372 KB Output is correct
7 Correct 4 ms 7348 KB Output is correct
8 Correct 5 ms 7372 KB Output is correct
9 Correct 42 ms 10608 KB Output is correct
10 Correct 11 ms 7620 KB Output is correct
11 Correct 13 ms 8008 KB Output is correct
12 Correct 46 ms 10540 KB Output is correct
13 Correct 5 ms 7372 KB Output is correct
14 Correct 42 ms 10632 KB Output is correct
15 Correct 22 ms 8744 KB Output is correct
16 Correct 13 ms 8012 KB Output is correct
17 Correct 44 ms 10540 KB Output is correct
18 Correct 41 ms 10632 KB Output is correct
19 Correct 45 ms 10540 KB Output is correct
20 Correct 45 ms 10560 KB Output is correct
21 Correct 4 ms 7372 KB Output is correct
22 Correct 41 ms 10620 KB Output is correct
23 Correct 43 ms 10596 KB Output is correct
24 Correct 41 ms 10604 KB Output is correct
25 Correct 42 ms 10564 KB Output is correct
26 Correct 22 ms 8768 KB Output is correct