Submission #1226304

#	Time	Username	Problem	Language	Result	Execution time	Memory
1226304		Theo830	Packing Biscuits (IOI20_biscuits)	C++17	0 / 100	1096 ms	5276 KiB

biscuits

#include <bits/stdc++.h>
using namespace std;
typedef long long ll;
const ll INF = 1e9+7;
const ll MOD = 998244353;
typedef pair<ll,ll> ii;
#define iii pair<ll,ii>
#define id pair<ll,vector<ll> >
#define f(i,a,b) for(ll i = a;i < b;i++)
#define pb push_back
#define vll vector<ll>
#define F first
#define S second
#define all(x) (x).begin(), (x).end()
///I hope I will get uprating and don't make mistakes
///I will never stop programming
///sqrt(-1) Love C++
///Please don't hack me
///@TheofanisOrfanou Theo830
///Think different approaches (bs,dp,greedy,graphs,shortest paths,mst)
///Stay Calm
///Look for special cases
///Beware of overflow and array bounds
///Think the problem backwards
///Training
#include "biscuits.h"
ll exo[65] = {0};
ll dp[10005][62];
ll X;
ll solve(ll idx,ll b){
    if(b == 62){
        return 1;
    }
    ll posa = idx + exo[b];
    ll ans = solve(posa / 2,b+1);
    if(posa >= X){
        ans += solve((posa - X) / 2,b+1);
    }
    return dp[idx][b] = ans;
}
long long count_tastiness(long long x, std::vector<long long> a){
    X = x;
    while(a.size() < 65){
        a.pb(0);
    }
    f(i,0,64){
        exo[i] += a[i];
        if(exo[i] > x){
            ll posa = exo[i] - x;
            exo[i+1] += posa / 2;
            posa %= 2;
            exo[i] = x;
            exo[i] += posa;
        }
    }
    memset(dp,-1,sizeof dp);
	return solve(0,0);
}

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