Submission #431328

#	Time	Username	Problem	Language	Result	Execution time	Memory
431328		Andyvanh1	Packing Biscuits (IOI20_biscuits)	C++14	0 / 100	2 ms	460 KiB

biscuits

#include <bits/stdc++.h>
#include "biscuits.h"
 
 
using namespace std;
 
#define vt vector
#define pb push_back
#define all(x) (x).begin(),(x).end()
#define rep(i,x) for(int (i) = 0; (i) < (x); (i)++)
 
typedef long long ll;
typedef long double ld;
typedef vt<int> vi;
typedef pair<int,int> pii;
 
vt<ll> A;
ll X;
int k;
 
bool works(ll cur){
 
    ll now = 0;
    ll lat = 0;
    for(int i = 0; i < 60; i++){
        if(i<k)
        now+=A[i]*(1ll<<i);
 
        lat+=((1ll<<i)&cur)*X;
        if(now<lat)return false;
    }
    return true;
 
}
 
ll brute_force(ll x, vt<ll> a){
    if(x>100000)return 1;
X = x; A = a;k =a.size();
ll ans = 0;
for(ll i = 100000; i >= 0; i--){
    if(works(i))ans++;
 
}
return ans;
 
}
 
ll count_tastiness(ll x, vt<ll> a){
    for(int i = 0; i < 65; i++)a.pb(0);
    k+=65;
    for(int i = 0; i < k-1; i++){
        a[i+1]+=((a[i]-1)/2);
        a[i]-=((a[i]-1)/2)*2;
    }
    ll ans = 1;
    ll cur = 1;
    ll curpr = 0;
    for(int i = 0; i < k; i++){
        if(a[i]==0){
 
            ans*=cur;
            cur = 1;
            curpr = 0;
        }else{
            cur+= a[i]*(1ll<<curpr);
            curpr++;
        }
    }
    ans*=cur;
    return ans;
}

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