Submission #305573

#	Time	Username	Problem	Language	Result	Execution time	Memory
305573		emanIaicepsa	Packing Biscuits (IOI20_biscuits)	C++17	100 / 100	92 ms	1144 KiB

biscuits

#include "biscuits.h"
#include<bits/stdc++.h>
#define ll long long
using namespace std;
ll arr[65], lim[65], X;
map<ll, ll> dp[65];

ll calc(ll i, ll j){
	j = min(j, 2*X);
	if(dp[i][j]) return dp[i][j];
	if(j >= X){
		if(i > 0) dp[i][j] += calc(i-1, min(lim[i], j-X) * 2 + arr[i-1]);
		else dp[i][j]++;
	}
	if(i > 0) dp[i][j] += calc(i-1, min(lim[i], j) * 2 + arr[i-1]);
	else dp[i][j]++;
	return dp[i][j];
}

ll count_tastiness(long long x, std::vector<long long> a) {
	memset(arr, 0, sizeof(arr));
	memset(lim, 0, sizeof(lim));
	for(int i=0;i<63;i++) dp[i].clear();
	X = x;

	for(int i=0;i<a.size();i++) arr[i] = a[i];
	for(int i=0;i<62;i++) lim[i+1] = arr[i]/2, arr[i+1] += arr[i]/2, arr[i] %= 2; 
	return calc(62, arr[62]);
}

Compilation message (stderr)

biscuits.cpp: In function 'long long int count_tastiness(long long int, std::vector<long long int>)':
biscuits.cpp:26:15: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<long long int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   26 |  for(int i=0;i<a.size();i++) arr[i] = a[i];
      |              ~^~~~~~~~~

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