Submission #1225982

#	Time	Username	Problem	Language	Result	Execution time	Memory
1225982		PVM_pvm	Packing Biscuits (IOI20_biscuits)	C++20	42 / 100	1098 ms	49992 KiB

biscuits

#include "biscuits.h"
#include<bits/stdc++.h>
using namespace std;
#define MAXK 60
unordered_map<long long, long long> un[MAXK];
long long xx;
vector<long long> ms(MAXK);
long long f(int bit, long long klk)
{
    if (bit==MAXK-1)
    {
        if (klk>=xx) return 2;
        return 1;
    }
    auto tyrs=un[bit].find(klk);
    if (tyrs!=un[bit].end()) {
        //cout<<tyrs->first<<" "<<tyrs->second<<" "<<klk<<"\n";
            return tyrs->second;}
    if (klk<xx)
    {
        long long cur=f(bit+1,ms[bit+1]+(klk/2));
        un[bit][klk]=cur;
        return cur;
    }
    long long cur=f(bit+1,ms[bit+1]+(klk/2))+f(bit+1,ms[bit+1]+((klk-xx)/2));
    un[bit][klk]=cur;
    //cout<<bit<<" "<<klk<<" "<<cur<<"\n";
    return cur;
}

long long count_tastiness(long long x, vector<long long> a) {
    for (int q=0;q<MAXK;q++) ms[q]=0;
    for (int q=0;q<a.size();q++) ms[q]=a[q];
	xx=x;
	for (int q=0;q<MAXK;q++) un[q].clear();
	return f(0,a[0]);
}

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