Submission #805906

#	Time	Username	Problem	Language	Result	Execution time	Memory
805906		LittleCube	Packing Biscuits (IOI20_biscuits)	C++17	44 / 100	1133 ms	1235700 KiB

biscuits

    #include "biscuits.h"
    #include <bits/stdc++.h>
    #define ll long long
    using namespace std;
     
    long long count_tastiness(ll x, vector<ll> a)
    {
    	a.resize(60);
    	int k = 60;
    	vector<ll> sum(k), fold(k);
    	sum[0] = a[0];
    	for (int i = 1; i < k; i++)
    		sum[i] = sum[i - 1] + (a[i] << i);
    	for (int i = 0; i < k; i++)
    		if (sum[i] / x / (1LL << i) == 0)
    			fold[i] = -1;
    		else
    			fold[i] = min((1LL << i) - 1, (sum[i] - x * (1LL << i)) / x);
    	vector<ll> v;
    	v.reserve(400000);
    	v.emplace_back(0);
    	for (int i = 0; i < k; i++)
    	{
    		for (int j = 0; j < v.size(); j++)
    			if(v[j] <= fold[i])
    				v.emplace_back((1LL << i) + v[j]);
          	    else break;
    	}
    	return v.size();
    }

Compilation message (stderr)

biscuits.cpp: In function 'long long int count_tastiness(long long int, std::vector<long long int>)':
biscuits.cpp:24:25: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<long long int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   24 |       for (int j = 0; j < v.size(); j++)
      |                       ~~^~~~~~~~~~

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