Submission #304770

#	Time	Username	Problem	Language	Result	Execution time	Memory
304770		junseo	Packing Biscuits (IOI20_biscuits)	C++17	44 / 100	111 ms	3584 KiB

biscuits

#include "biscuits.h"
#include <bits/stdc++.h>
#define fi first
#define se second
#define eb emplace_back
#define all(v) (v).begin(), (v).end()
#define rmin(r, x) r = min(r, x)
#define rmax(r, x) r = max(r, x)
#define ends ' '
#define endl '\n'
#define fastio ios_base::sync_with_stdio(0), cin.tie(0)
#pragma GCC optimize("O3")
#pragma GCC target("avx,avx2")
using namespace std;
typedef long long ll;
typedef pair<int, int> pii;
typedef pair<ll, ll> pll;

const int maxk = 65;
const int maxa = 2e5 + 10;

int k;
ll s[maxk], ans[maxa];

long long count_tastiness(long long x, std::vector<long long> a) {
	k = a.size();
	a.resize(maxk);
	s[0] = a[0];
	for(int i = 1; i <= 60; ++i)	s[i] = s[i - 1] + (1LL << i) * a[i];
	
	int N = 1;
	for(int i = 0; i <= 60; ++i) {
		int st = 1, ed = N, r = 0;
		ll T = s[i] / x - (1LL << i);
		while(st <= ed) {
			int mid = st + ed >> 1;
			if(T >= ans[mid])	{
				r = mid;
				st = mid + 1;
			}
			else	ed = mid - 1;
		}
		for(int j = 1; j <= r; ++j) {
			ans[++N] = ans[j] + (1LL << i); 
		}
	}
	assert(N <= 2e5);
	return N;
}

Compilation message (stderr)

biscuits.cpp: In function 'long long int count_tastiness(long long int, std::vector<long long int>)':
biscuits.cpp:36:17: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
   36 |    int mid = st + ed >> 1;
      |              ~~~^~~~

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