제출 #1064861

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
1064861		new_acc	비스킷 담기 (IOI20_biscuits)	C++14	100 / 100	48 ms	1464 KiB

biscuits

#include "biscuits.h"
#include<bits/stdc++.h>
#define fi first
#define se second
using namespace std;
typedef long long ll;
typedef vector<int> vi;
typedef vector<ll> vl;
const int N=1e6+10;
ll pot[N],s[N],n;
ll ob(ll x){
    if(x==0) return 0;
    if(x==1) return 1;
    int g=0;
    for(int i=59;i>=0;i--){
        if((1LL<<i)<x){
            g=i;
            break;
        }
    }
    ll res=pot[g];
    ll xd=min(x,s[g]/n+1)-(1LL<<g);
    if(xd>=0) res+=ob(xd);
    return res;
}
ll count_tastiness(ll x,vl a){
    n=x;
    while(a.size()<60) a.push_back(0);
    ll curr=0;
    for(int i=0;i<60;i++){
        curr+=(1LL<<i)*a[i];
        s[i]=curr;
    }
    pot[0]=1;
    for(int i=1;i<=60;i++){
        pot[i]=ob(1LL<<i); 
    }
    return pot[60];
}

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