Submission #1072487

#	Time	Username	Problem	Language	Result	Execution time	Memory
1072487		ewirlan	Packing Biscuits (IOI20_biscuits)	C++17	12 / 100	12 ms	1116 KiB

biscuits

//
#ifndef __SIZEOF_INT128__
  #define __SIZEOF_INT128__
#endif
#pragma GCC optimize("Ofast")
#include <bits/stdc++.h>
#include <ext/pb_ds/assoc_container.hpp>
#include <ext/pb_ds/tree_policy.hpp>
using namespace std;
using namespace chrono;
using namespace __gnu_pbds;
template <typename T> using oset =  tree<T, null_type, less_equal<T>, rb_tree_tag, tree_order_statistics_node_update>;
#define rep(i, p, k) for(int i(p); i < (k); ++i)
#define per(i, p, k) for(int i(p); i > (k); --i)
#define sz(x) (int)(x).size()
#define sc static_cast
typedef long long ll;
typedef long double ld;
typedef unsigned int uint;
typedef unsigned long long ull;
typedef __int128_t lll;
//#define int ll
template <typename T = int> using par = std::pair <T, T>;
#define fi first
#define se second
#define test int _number_of_tests(in()); while(_number_of_tests--)
#define all(x) (x).begin(), (x).end()
#define rall(x) (x).rbegin(), (x).rend()
#define pb emplace_back
struct Timer {
    string name{""};
    time_point<high_resolution_clock> end, start{high_resolution_clock::now()};
    duration<float, std::milli> dur;
    Timer() = default;
    Timer(string nm): name(nm) {}
    ~Timer() {
        end = high_resolution_clock::now(); dur= end - start;
        cout << "@" << name << "> " << dur.count() << " ms" << '\n';
    }
};
template <typename T = int> inline T in()
{
    static T x;
    std::cin >> x;
    return x;
}
std::string yn(bool b)
{
    if(b) return "YES\n";
    else return "NO\n";
}
template <typename F, typename S> std::ostream& operator<<(std::ostream& out, const std::pair <F, S>& par);
template <typename T> std::ostream& operator<< (std::ostream& out, const std::vector <T>& wek)
{
    for(const auto& i : wek)out << i << ' ';
    return out;
}
template <typename F, typename S> std::ostream& operator<<(std::ostream& out, const std::pair <F, S>& par)
{
    out << '{'<<par.first<<", "<<par.second<<"}";
    return out;
}
#define show(x) cerr << #x << " = " << x << '\n';
vector <int> l, r;
vector <ll> t;
int ne(){
    l.pb(-1); r.pb(-1); t.pb(-1);
    return sz(t)-1;
}
void add(int w, ll a, int z, ll d)
{
    if(a == 0){
        l[w] = r[w] = 0;
    }
    if(0 < a && a < d/2){
        l[w] = ne();
        r[w] = 0;
        add(l[w], a, l[z], d/2);
    }
    if(a == d/2){
        l[w] = l[z];
        r[w] = 0;
    }
    if(d/2 < a && a < d){
        l[w] = l[z];
        r[w] = ne();
        add(r[w], a-d/2, r[z], d/2);
    }
    if(a == d){
        l[w] = l[z];
        r[w] = r[z];
    }
    t[w] = t[l[w]] + t[r[w]];
}
ll count_tastiness(ll x, vector<ll> a)
{
    l = {-1, -1};
    r = {-1, -1};
    t = {0, 1};
    vector <ll> moz{0};
    ll s(0);
    int k(1);
    rep(p, 0, 61){
        l.pb(k); r.pb(0); t.pb(t[k]);
        k = sz(l)-1;
        if(p < sz(a))s += (a[p]<<p);
        if(s < (lll(x)<<p))continue;
        ll b(min((1ll<<p)-1, (s-(x<<p))/x)+1);
        if(b == 1ll<<p){
            r[k] = l[k];
            t[k] *= 2;
            continue;
        }
        r[k] = ne();
        add(r[k], b, l[k], (1ll<<p));
        t[k] = t[l[k]] + t[r[k]];
        // cerr << "--------------------\n";
        // cerr << l << '\n' << r << '\n' << t << '\n';
    }
    return t[k];
}

• Subtask 1: 0 / 9
• Subtask 2: 12 / 12
• Subtask 3: 0 / 21
• Subtask 4: 0 / 35
• Subtask 5: 0 / 23