oj.uz

답안 #251931

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
251931 2020-07-23T06:44:04 Z kartel Poklon (COCI17_poklon7) C++14
114 / 120
 999 ms 262148 KB 
#include <bits/stdc++.h>
//#include <ext/pb_ds/assoc_container.hpp>
//#include <ext/pb_ds/tree_policy.hpp>
#define in(x) freopen(x, "r", stdin)
#define out(x) freopen(x, "w", stdout)
//#pragma GCC target("sse,sse2,sse3,ssse3,sse4,popcnt,abm,mmx,avx,tune=native")
//#pragma GCC optimize("Ofast,nso-stack-protector,unroll-loops,fast-math,-O3")
#define F first
#define S second
#define pb push_back
#define N +1000500
#define M ll(1e9 + 7)
#define sz(x) (int)x.size()
#define re return
#define oo ll(1e9)
#define el '\n'
#define Max_A int(1e9)
//#define el endl
#define pii pair <int, int>
#define psi pair <string, int>
#define err ld(1e-9)
#define Max_S int(3e6)
#define last(x) x.back()
#define all(x) (x).begin(), (x).end()
#define arr_all(x, n) (x + 1), (x + 1 + n)
using namespace std;
//using namespace __gnu_pbds;
//typedef tree <int, null_type, less_equal <int> , rb_tree_tag, tree_order_statistics_node_update> ordered_set;
typedef long long ll;
typedef long double ld;

pair <int, int> f[N];
int i, n;

psi umax(psi a, psi b)
{
    if (sz(a.F) + a.S > sz(b.F) + b.S) return a;
    if (sz(a.F) + a.S < sz(b.F) + b.S) return b;

    string na = a.F, nb = b.F;

    while (sz(na) < sz(nb)) na += "0";
    while (sz(na) > sz(nb)) nb += "0";

    int i = 0;
    while (i < sz(na) && na[i] == nb[i]) i++;

    if (i == sz(na)) return a;

    if (na[i] > nb[i]) return a;
                  else return b;
}

psi upd(psi x)
{
    x.S++;
    return x;
}

string bin(ll x)
{
    string ans = "";
    if (x == 0) ans = "0";
    while (x)
    {
        if (x & 1)
            ans += "1";
        else ans += "0";
        //ans += char('0' + x & 1);
        x >>= 1;
    }
    reverse(all(ans));
    return ans;
}

psi make(string x)
{
    int sc = 0;
    while (x.back() == '0') sc++, x.erase(sz(x) - 1);
    return {x, sc};
}

psi rec(ll v)
{
    psi lF;
    psi rF;

    if (f[v].F > 0) lF = rec(f[v].F); else lF = make(bin(-f[v].F));
    if (f[v].S > 0) rF = rec(f[v].S); else rF = make(bin(-f[v].S));

    return upd(umax(lF, rF));
}


string restore(psi x)
{
    string ans = x.F;
    for (int i = 0; i < x.S; i++) ans += "0";
    return ans;
}

int main()
{
    cout.precision(2);
    srand(time(0));
    ios_base::sync_with_stdio(0);
    iostream::sync_with_stdio(0);
    ios::sync_with_stdio(0);
    cin.tie(NULL);
    cout.tie(NULL);

//    in("input.txt");
//    in("17.in");
//    out("output.txt");
    cin >> n;
    for (i = 1; i <= n; i++)
    {
        int l, r;
        cin >> l >> r;
        f[i] = {l, r};
    }

    cout << restore(rec(1)) << el;
}
//
//00000
//00110
//00111
//00011
//00000

Subtask #1
114.0 / 120.0

# 결과 실행 시간 메모리 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 1 ms 384 KB Output is correct
6 Correct 0 ms 384 KB Output is correct
7 Correct 1 ms 384 KB Output is correct
8 Correct 1 ms 384 KB Output is correct
9 Correct 1 ms 384 KB Output is correct
10 Correct 1 ms 384 KB Output is correct
11 Correct 11 ms 2304 KB Output is correct
12 Correct 13 ms 1848 KB Output is correct
13 Correct 53 ms 10488 KB Output is correct
14 Correct 104 ms 21628 KB Output is correct
15 Correct 98 ms 1272 KB Output is correct
16 Correct 350 ms 52216 KB Output is correct
17 Correct 816 ms 107888 KB Output is correct
18 Correct 823 ms 125048 KB Output is correct
19 Correct 999 ms 78328 KB Output is correct
20 Runtime error 394 ms 262148 KB Execution killed with signal 9 (could be triggered by violating memory limits)