Submission #430068

#	Time	Username	Problem	Language	Result	Execution time	Memory
430068		Keshi	Packing Biscuits (IOI20_biscuits)	C++17	42 / 100	1076 ms	23932 KiB

biscuits

//In the name of God
#include<bits/stdc++.h>
#include "biscuits.h"
using namespace std;

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

const ll maxn = 2e5 + 100;
const ll mod = 1e9 + 7;
const ll inf = 1e18;
const ll lg = 130;

#define Mp make_pair
#define F first
#define S second
#define pb push_back
#define all(x) (x).begin(), (x).end()
#define Sz(x) ll((x).size())



long long count_tastiness(long long x, vector<long long> a){
	a.resize(lg, 0);
	for(ll i = 0; i + 1 < lg; i++){
		ll y = max(0ll, (a[i] - x) / 2);
		a[i] -= y * 2;
		a[i + 1] += y;
	}
	ll ls = 0;
	for(ll i = 0; i < lg; i++){
		if(a[i]) ls = i;
	}
	map<ll, ll> dp, dp2;
	dp[0] = 1;
	for(ll i = 0; i < ls + 2; i++){
		dp2.clear();
		for(pll j : dp){
			dp2[(j.F + a[i]) / 2] += j.S;
			if(j.F + a[i] >= x) dp2[(j.F + a[i] - x) / 2] += j.S;
		}
		dp = dp2;
	}
	ll ans = 0;
	for(pll j : dp){
		ans += j.S;
	}
	return ans;
}

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