Submission #1054678

#	Time	Username	Problem	Language	Result	Execution time	Memory
1054678		pcc	Packing Biscuits (IOI20_biscuits)	C++17	9 / 100	1084 ms	600 KiB

biscuits

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

#define ll long long

bool check(ll cnt,ll tar,vector<ll> v){
	ll b = __lg(tar);
	while(v.size()<=b)v.push_back(0);
	for(int i = 0;i<=b;i++){
		ll need = cnt*((tar>>i)&1);
		if(need>v[i])return false;
		ll rest = v[i]-need;
		rest>>=1;
		if(i+1<=b)v[i+1] += rest;
	}
	return true;
}

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

Compilation message (stderr)

biscuits.cpp: In function 'bool check(long long int, long long int, std::vector<long long int>)':
biscuits.cpp:9:16: warning: comparison of integer expressions of different signedness: 'std::vector<long long int>::size_type' {aka 'long unsigned int'} and 'long long int' [-Wsign-compare]
    9 |  while(v.size()<=b)v.push_back(0);
      |        ~~~~~~~~^~~
biscuits.cpp: In function 'long long int count_tastiness(long long int, std::vector<long long int>)':
biscuits.cpp:23:17: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<long long int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   23 |  for(int i = 0;i<a.size();i++)sum += a[i]*(1ll<<i);
      |                ~^~~~~~~~~
biscuits.cpp:21:6: warning: unused variable 'n' [-Wunused-variable]
   21 |  int n = a.size();
      |      ^

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