Submission #546828

#	Time	Username	Problem	Language	Result	Execution time	Memory
546828		brunnorezendes	Packing Biscuits (IOI20_biscuits)	C++17	0 / 100	349 ms	26604 KiB

biscuits

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

using namespace std;

typedef long long int int64;
typedef vector<int64> vi;

set <int64> s[2];

map <pair<int,int64> , int> mp;

int64 count_tastiness(int64 x, vi a){
	int64 resp=0;
	pair<int,int64> p;
	s[0].insert(0);
	int flag=0;
	mp[{0, 0}] = 1;
	for(int i=0;i<a.size();i++){
		for(auto k: s[flag]){
			if(k>=(x-a[i])){
				mp[{i+1, (k-(x-a[i]))/2}] += mp[{i, k}];
				s[!flag].insert((k-(x-a[i]))/2);
			}
			mp[{i+1, (k+a[i])/2}] += mp[{i, k}];
			s[!flag].insert((k+a[i])/2);
		}
		s[flag].clear();
		flag = !flag;
	}
	for(auto k: s[flag]){
		resp += mp[{a.size(), k}];
	}
	return resp;
}

Compilation message (stderr)

biscuits.cpp: In function 'int64 count_tastiness(int64, vi)':
biscuits.cpp:19:15: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<long long int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   19 |  for(int i=0;i<a.size();i++){
      |              ~^~~~~~~~~

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