Submission #1239540

#	Time	Username	Problem	Language	Result	Execution time	Memory
1239540		Amaarsaa	Poklon (COCI17_poklon7)	C++20	78 / 120	1095 ms	47196 KiB

poklon

#include <bits/stdc++.h>

using namespace std;
using ll =long long;
const ll N = 1e6 + 2;

ll lef[N], rig[N];


string To_Bin(ll x) {
    ll i, r;
    string str = "";
    for (i = 30; i >= 0; i --) {
        r = 1<<i;
        if ( x >= r) {
            x -= r;
            str = str + "1";
        }
        else str = str + "0";
    }
    r = 0;
    while ( r < str.size() && str[r] == '0') r ++; 
    str = str.substr(r, str.size() - r);
    return str;
}
string add_one(string str) {
    ll r = str.size() - 1;
    while ( r >= 0 && str[r] == '1') {
        r --;
    }
    string str1 = str.substr(0, r + 1);
    if ( str1.size() == 0) str1 = "1";
    else str1[str1.size() - 1] = '1';
    str1 = str1 + string(str.size()- r - 1, '0');
    return str1;
}
ll Unite(ll l, ll l_a, ll r, ll r_a) {
     if (l_a < r_a) {
         swap(l_a, r_a);
         swap(l, r);
     }
     ll is_zero = 1;
     
//     for (ll i = max(int(0), int(r.size() - (l_a - r_a ))); i < r.size(); i ++) {
//     	if ( r[i] == '1') is_zero = 0;
//	 }
//	if ( is_zero == 0) r = add_one(r); 
ll cnt = l_a - r_a;
while ( cnt > 0) {
	cnt --;
	r/=2;
}
ll str = max(l , r);
	return str;
}
ll to_number(string str) {
	ll p, ind, r =0 ;
	p = 1;
	ind = str.size() - 1;
	while ( ind >= 0) {
		if ( str[ind] == '1') r += p;
		p *= 2;
		ind --;
	}
	return r;
}
pair < ll, ll > Find(ll x) {

ll lef_w, rig_w;
ll lef_add, rig_add;
    if ( lef[x] < 0) {
        lef_w = -lef[x];
        lef_add = 0;
    }
    else {
    	pair < ll, ll > R = Find(lef[x]);
        lef_w = R.first;
        lef_add =R.second;
    }
    if ( rig[x] < 0) {
        rig_w = -rig[x];
        rig_add = 0;
    }
    else {
        pair <ll, ll > R = Find(rig[x]);
        rig_w = R.first;
        rig_add =R.second;
    }
    pair < ll, ll > P;
    P = make_pair(Unite(lef_w, lef_add, rig_w, rig_add), max(lef_add, rig_add) + 1);
    return P;
}


int main() {
	ios::sync_with_stdio();
	cin.tie(0);
	cout.tie(0);
    ll n, m, r, s, x, i, y;

    cin >> n;

    for (i = 1; i <= n; i ++){
        cin >> lef[i] >> rig[i];
    }
  //  cout << "HI" <<endl;
  pair < ll, ll > P = Find(1);
   string ans = To_Bin(P.first);
   ll depth = P.second;
//   if ( w[1].size() > 33) {
  // 	while(1);
   //}
   cout << ans;
   for (i =0 ; i < depth; i ++) cout << '0';
   cout<< endl;
}

• Subtask 1: 78 / 120