Submission #425620

#	Time	Username	Problem	Language	Result	Execution time	Memory
425620		muhammad_hokimiyon	Packing Biscuits (IOI20_biscuits)	C++14	100 / 100	109 ms	1316 KiB

biscuits

#include "biscuits.h"
#include <bits/stdc++.h>

using namespace std;

#define ll long long

map<ll, ll> d,s;

ll g(ll n, ll x)
{
        if(n <= 0)return 0ll;
        if(n == 1)return 1ll;
        if(d.find(n) != d.end())return d[n];
        ll i = 0;
        while(i < 100){
                if((1ll << i) < n && n <= (1ll << (i + 1)))break;
                i++;
        }
        return d[n] = g((1ll << i), x) + g(min(n, 1 + s[i] / x) - (1ll << i), x);
}

long long count_tastiness(long long x, std::vector<long long> a) {
        ll ans = 0;
        while((int)a.size() < 100)a.push_back(0ll);
        for(int i = 0; i < 100; i++){
                s[i] = s[i - 1] + (1ll << i) * a[i];
        }
        ans += g((1ll << 60), x);
        d.clear();
        s.clear();
        return ans;
}

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