Submission #773780

#	Time	Username	Problem	Language	Result	Execution time	Memory
773780		ono_de206	Packing Biscuits (IOI20_biscuits)	C++14	0 / 100	13 ms	380 KiB

biscuits

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

#define in insert
#define all(x) x.begin(),x.end()
#define pb push_back
#define eb emplace_back
#define ff first
#define ss second

// #define int long long
 
typedef long long ll;
typedef vector<int> vi;
typedef set<int> si;
typedef multiset<int> msi;
typedef pair<int, int> pii;
typedef vector<pii> vpii;

long long count_tastiness(long long x, vector<long long> a) {
	const long long inf = 1e18;
	while(a.size() < 62) {
		a.pb(0);
	}
	vector<int> s{0};
	for(int i = 0; i < 62; i++) {
		s.pb(s.back() + a[i] * (1LL << i));
	}

	map<long long, long long> mp;
	mp[0] = 1;
	if(a[0] >= x) mp[1] = 1;
	else mp[1] = 0;

	function<long long(long long)> solve = [&](long long n) {
		if(mp.find(n) != mp.end()) return mp[n];
		long long &ret = mp[n];
		int i = 0;
		while((1ll << i) < n) {
			i++;
		}
		ret = solve(1ll << (i - 1)) + solve(min(n, 1 + s[i] / x) - (1ll << (i - 1)));
		return ret;
	};

	return solve((long long)1e18);
}

Compilation message (stderr)

biscuits.cpp: In function 'long long int count_tastiness(long long int, std::vector<long long int>)':
biscuits.cpp:22:18: warning: unused variable 'inf' [-Wunused-variable]
   22 |  const long long inf = 1e18;
      |                  ^~~

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