제출 #835183

#제출 시각아이디문제언어결과실행 시간메모리
835183DJeniUp비스킷 담기 (IOI20_biscuits)C++17
0 / 100
1 ms312 KiB
#include "biscuits.h"
#include <bits/stdc++.h>
using namespace std;

typedef long long ll;

#define pb push_back
#define fr first
#define sc second

ll res,n,d[67],k;

void S(ll x,ll y){
	if(x==n){
		res++;
		return ;
	}
	y+=(d[x]<<x);
	if((k<<x)<=y){
		S(x+1,y-(k<<x));
	}
	S(x+1,y);
	return ;
}

long long count_tastiness(long long x, std::vector<long long> a) {
	res=0;
	n=a.size();
	k=x;
	for(int i=0;i<n;i++){
		d[i]=a[i];
	}
	S(0,0);
	return res;
}
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