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Submission #249544

# Submission time Handle Problem Language Result Execution time Memory
249544 2020-07-15T08:52:22 Z Vimmer Poklon (COCI17_poklon7) C++14
120 / 120
 449 ms 151148 KB 
#include <bits/stdc++.h>
//#include <ext/pb_ds/assoc_container.hpp>
//#include <ext/pb_ds/tree_policy.hpp>

#pragma GCC optimize("unroll-loops")
#pragma GCC optimize("-O3")
#pragma GCC optimize("Ofast")
//#pragma GCC optimize("fast-math")
//#pragma GCC optimize("no-stack-protector")

#define F first
#define S second
#define sz(x) int(x.size())
#define pb push_back
#define pf push_front
#define N 1000010
#define M ll(1e9 + 7)
#define inf 1e9 + 1e9

using namespace std;
//using namespace __gnu_pbds;

typedef long double ld;
typedef long long ll;
typedef unsigned long long ull;
typedef short int si;
typedef array <int, 6> a6;

//typedef tree <int, null_type, less_equal<int>, rb_tree_tag, tree_order_statistics_node_update> ordered_set;

int L[N], R[N];

vector <char> tranc(int x)
{
    vector <char> gr; gr.clear();

    while (x > 0)
    {
        if (x % 2) gr.pb('1');
          else gr.pb('0');

        x /= 2;
    }

    reverse(gr.begin(), gr.end());

    return gr;
}

pair <int, int > dfs(int v)
{
    pair <int, int> l, r;

    if (L[v] < 0) l = dfs(abs(L[v])); else l = {0, L[v]};

    if (R[v] < 0) r = dfs(abs(R[v])); else r = {0, R[v]};

    if (log2(l.S) + l.F < log2(r.S) + r.F) swap(l, r);

    if (log2(l.S) + l.F != log2(r.S) + r.F) {l.F++; return l;}

    vector <char> gl = tranc(l.S);

    vector <char> gr = tranc(r.S);

    for (int i = 0; i < min(sz(gr), sz(gl)); i++)
    {
        if (gl[i] == gr[i]) continue;

        if (gr[i] == '1') swap(l, r);

        break;
    }

    l.F++;

    return l;
}

int main()
{
    //freopen("input.txt", "r", stdin); freopen("output4.txt", "w", stdout);

    ios_base::sync_with_stdio(0); istream::sync_with_stdio(0); cin.tie(0); cout.tie(0);

    int n;

    cin >> n;

    for (int i = 1; i <= n; i++)
    {
        int l, r;

        cin >> l >> r;

        if (l < 0) L[i] = abs(l); else L[i] = -l;

        if (r < 0) R[i] = abs(r); else R[i] = -r;
    }

    pair <int, int > gr = dfs(1);

    vector <char> pr = tranc(gr.S);

    for (int i = 0; i < gr.F; i++) pr.pb('0');

    for (auto it : pr) cout << it;
}

Subtask #1
120.0 / 120.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 384 KB Output is correct
2 Correct 0 ms 384 KB Output is correct
3 Correct 0 ms 384 KB Output is correct
4 Correct 0 ms 384 KB Output is correct
5 Correct 0 ms 384 KB Output is correct
6 Correct 0 ms 384 KB Output is correct
7 Correct 0 ms 384 KB Output is correct
8 Correct 0 ms 384 KB Output is correct
9 Correct 0 ms 384 KB Output is correct
10 Correct 1 ms 384 KB Output is correct
11 Correct 4 ms 1152 KB Output is correct
12 Correct 5 ms 896 KB Output is correct
13 Correct 19 ms 4352 KB Output is correct
14 Correct 43 ms 8828 KB Output is correct
15 Correct 34 ms 1144 KB Output is correct
16 Correct 136 ms 20984 KB Output is correct
17 Correct 302 ms 43256 KB Output is correct
18 Correct 329 ms 49528 KB Output is correct
19 Correct 392 ms 33528 KB Output is correct
20 Correct 449 ms 151148 KB Output is correct