Submission #1207813

#	Time	Username	Problem	Language	Result	Execution time	Memory
1207813		simona1230	Packing Biscuits (IOI20_biscuits)	C++20	47 / 100	775 ms	282372 KiB

biscuits

#include "biscuits.h"
#include <bits/stdc++.h>
using namespace std;

long long p[64];
long long ans,nd,b[64];
long long s[64];
vector<long long> v;
long long dp[64][600001];
long long count_tastiness(long long x, std::vector<long long> a)
{
    p[0]=1;
    for(int i=1; i<60; i++)
        p[i]=p[i-1]*2;

    while(a.size()<60)a.push_back(0);
    if(x<=10000)
    {
        for(int i=0;i<a.size();i++)
        {
            if(a[i]>=x)
            {
                long long lf=a[i]-x;
                a[i]=x+lf%(2*x);
                a[i+1]+=lf/(2*x);
            }
        }

        dp[60][0]=1;
        for(int i=59;i>=0;i--)
        {
            //cout<<a[i]<<" ";
            for(int j=0;j<=600000;j++)
            {
                dp[i][j]=0;
                if((j+a[i])/2<=600000)dp[i][j]=dp[i+1][(j+a[i])/2];
                if(j+a[i]>=x&&(j+a[i]-x)/2<=600000)dp[i][j]+=dp[i+1][(j+a[i]-x)/2];
                //cout<<i<<" "<<j<<" "<<dp[i][j]<<endl;
            }
        }
        //cout<<endl;

        return dp[0][0];
        cout<<dp[0][0]<<endl;
    }

    s[0]=a[0];
    for(int i=1; i<60; i++)
    {
        s[i]=s[i-1];
        if(i<a.size())s[i]+=a[i]*p[i];
    }
    nd=x;
    ans=0;

    v.clear();
    v.push_back(0);
    for(int i=0;i<60;i++)
    {
        int sz=v.size();
        int j=0;
        while(j<sz&&(v[j]+p[i])<=s[i]/nd)
        {
            v.push_back(v[j]+p[i]);
            j++;
        }
    }
    //cout<<"? "<<v.size()<<endl;
    return v.size();
}

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