Submission #1081488

#	Time	Username	Problem	Language	Result	Execution time	Memory
1081488		GrindMachine	Packing Biscuits (IOI20_biscuits)	C++17	0 / 100	1079 ms	868 KiB

biscuits

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

typedef long long int ll;
typedef pair<int,int> pii;
typedef pair<ll,ll> pll;

#define pb push_back
#define endl '\n'
#define conts continue
#define ff first
#define ss second
#define all(a) a.begin(),a.end()
#define rall(a) a.rbegin(),a.rend()
#define sz(a) (int)a.size()

#define rep(i,n) for(int i = 0; i < n; ++i)
#define rep1(i,n) for(int i = 1; i <= n; ++i)
#define rev(i,s,e) for(int i = s; i >= e; --i)
#define trav(i,a) for(auto &i : a)

template<typename T>
void amin(T &x, T y){
	x = min(x,y);
}

template<typename T>
void amax(T &x, T y){
	x = max(x,y);
}

template<typename A,typename B>
string to_string(pair<A,B> p);

string to_string(const string &s){
	return "'"+s+"'";
}

string to_string(const char* s){
	return to_string((string)s);
}

string to_string(bool b){
	return b?"true":"false";
}

template<typename A>
string to_string(A v){
	string res = "{";
	trav(x,v){
		res += to_string(x)+",";
	}
	if(res.back() == ',') res.pop_back();
	res += "}";
	return res;
}

template<typename A,typename B>
string to_string(pair<A,B> p){
	return "("+to_string(p.ff)+","+to_string(p.ss)+")";
}

#define debug(x) cout << "[" << #x << "]: "; cout << to_string(x) << endl

const int MOD = 1e9 + 7;
const int N = 1e5 + 5;
const int inf1 = 1e9 + 5;
const ll inf2 = (ll)1e18 + 5;

#include "biscuits.h"

long long count_tastiness(long long x, std::vector<long long> a) {
	ll n = sz(a);
	ll sum = 0;
	rep(i,n) sum += a[i]*(1ll<<i);
	ll ans = 1;
	vector<bool> vals;
	vals.pb(1);

	rep1(y,sum/x){
		auto b = a;
		bool ok = true;

		rep1(iter,x){
			ll v = y;
			rev(i,n-1,0){
				ll f = 1ll<<i;
				ll sub = min(v/f,b[i]);
				b[i] -= sub;
				v -= sub*f;
			}

			if(v){
				ok = false;
				break;
			}
		}

		ans += ok;
		vals.pb(ok);
	}

	ll siz = sz(vals);
	for(int i = 1; i < siz; i <<= 1){
		vector<int> curr;
		for(int j = i; j < (i<<1) and j < siz; ++j){
			curr.pb(vals[j]);
		}

		reverse(all(curr));
		assert(is_sorted(all(curr)));
	}

	return ans;
}

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