Submission #613378

#	Time	Username	Problem	Language	Result	Execution time	Memory
613378		penguinhacker	Packing Biscuits (IOI20_biscuits)	C++17	42 / 100	1072 ms	15692 KiB

biscuits

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

#define ll long long
#define ar array

ll count_tastiness(ll x, vector<ll> a) {
	map<ll, ll> dp;
	dp[0]=1;
	for (int i=0; i<a.size()||dp.size()>1||dp.begin()->first; ++i) {
		map<ll, ll> dp2;
		for (auto b : dp) {
			ll cur=b.first+(i<a.size()?a[i]:0);
			dp2[cur/2]+=b.second;
			if (cur>=x)
				dp2[(cur-x)/2]+=b.second;
		}
		swap(dp, dp2);
	}
	return dp[0];
}

Compilation message (stderr)

biscuits.cpp: In function 'long long int count_tastiness(long long int, std::vector<long long int>)':
biscuits.cpp:11:17: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<long long int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   11 |  for (int i=0; i<a.size()||dp.size()>1||dp.begin()->first; ++i) {
      |                ~^~~~~~~~~
biscuits.cpp:14:21: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<long long int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   14 |    ll cur=b.first+(i<a.size()?a[i]:0);
      |                    ~^~~~~~~~~

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