Submission #730391

#	Time	Username	Problem	Language	Result	Execution time	Memory
730391		danikoynov	Packing Biscuits (IOI20_biscuits)	C++14	9 / 100	1082 ms	340 KiB

biscuits

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

using namespace std;
typedef long long ll;

const ll maxk = 63;
ll n, dp[maxk], b[maxk];

long long count_tastiness(long long x, vector<long long> a)
{
    a.resize(20);
    n = a.size();
    ll sum = 0;
    for (int i = 0; i < n; i ++)
    {
        sum += a[i] * ((ll)(1) << i);
    }

    ll ans = 0;
    for (ll d = 0; d <= sum; d ++)
    {
        for (int i = 0; i < 20; i ++)
            b[i] = a[i];

            bool tf = true;
        for (ll bit = 0; bit < 20; bit ++)
        {
            ///cout << bit << " : " << b[bit] << endl;
            if ((d & (1 << bit)) > 0)
            {
                ///cout << "yes" << endl;
                if (b[bit] < x)
                {
                    tf = false;
                    break;
                }
                b[bit] -= x;
            }
            b[bit + 1] = b[bit + 1] + b[bit] / 2;
        }
        ///cout << d << " " << tf << endl;
        if (tf)
            ans ++;
    }
    ///cout << ans << endl;

    return ans;
}

/**long long count_tastiness_fast(long long x, vector<long long> a)
{
    a.resize(maxk);
    n = a.size();


    b[0] = a[0];
    for (int i = 1; i < maxk; i ++)
    {
        b[i] = b[i - 1] / 2 + a[i];
    }

    dp[0] = 1;
   if (a[0] >= x)
        dp[0] ++;
    for (ll i = 1; i < maxk; i ++)
    {
        dp[i] = 0;
        if (b[i] < x)
        {
            ///cout << "here " << i << " " << b[i] << " " << x << endl;
            dp[i] = dp[i - 1];
            continue;
        }

        dp[i] = dp[i - 1];
        if (a[i] >= x)
        {
            dp[i] += dp[i - 1];
            continue;
        }
        ll nec = (x - a[i]) * 2;
        for (int j = i - 1; j >= 0; j --)
        {
            ///cout << i << " : " << j << " : " << nec << " : " << a[j] << endl;
            if (a[j] >= nec + x)
            {
                dp[i] = dp[i] + dp[j];
                break;
            }
            if (a[j] >= nec)
            {
                if (j == 0)
                    dp[i] ++;
                else
                    dp[i] = dp[i] + dp[j - 1];
                nec = (x - (a[j] - nec)) * 2;
            }
            else
            {
                nec = (nec - a[j]) * 2;
            }
        }
    }
    for (int j = 0; j < 5; j ++)
        cout << dp[j] << " ";
    cout << endl;

    return dp[maxk - 1];
}*/

Compilation message (stderr)

biscuits.cpp: In function 'long long int count_tastiness(long long int, std::vector<long long int>)':
biscuits.cpp:23:9: warning: this 'for' clause does not guard... [-Wmisleading-indentation]
   23 |         for (int i = 0; i < 20; i ++)
      |         ^~~
biscuits.cpp:26:13: note: ...this statement, but the latter is misleadingly indented as if it were guarded by the 'for'
   26 |             bool tf = true;
      |             ^~~~

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