Submission #620996

#	Time	Username	Problem	Language	Result	Execution time	Memory
620996		KLPP	Packing Biscuits (IOI20_biscuits)	C++14	33 / 100	57 ms	30468 KiB

biscuits

#include "biscuits.h"
#include<bits/stdc++.h>
using namespace std;
#define rep(i,a,b) for(int i=a;i<b;i++)
#define trav(a,v) for(auto a:v)
typedef long long int lld;

lld arr[100];
int k;
vector<lld> V;
vector<lld> NXT;
lld ans;
lld DP[100][30000];
lld X;
lld calc(int pos, int carry){
	//cout<<pos<<" "<<carry<<endl;
	if(pos==60){
		return 1;
	}
	if(DP[pos][carry]!=-1)return DP[pos][carry];
	DP[pos][carry]=calc(pos+1,(carry+arr[pos])/2);
	if(carry+arr[pos]>=X){
		DP[pos][carry]+=calc(pos+1,(carry+arr[pos]-X)/2);
	}
	return DP[pos][carry];
}
long long count_tastiness(long long x, std::vector<long long> a) {
	rep(i,0,100)arr[i]=0;
	V.clear();
	NXT.clear();
	k=a.size();
	rep(i,0,k)arr[i]=a[i];
	rep(i,0,60){
		if(arr[i]>=2*x+1){
			lld val=(arr[i]-2*x-1)/2;
			arr[i+1]+=val;
			arr[i]-=2*val;
		}
		while(arr[i]>=2*x+1){
			arr[i]-=2;
			arr[i+1]++;
		}
	}
	rep(i,0,60){
		rep(j,0,2*x+1){
			DP[i][j]=-1;
		}
	}
	V.push_back(0);
	ans=0;
	X=x;
	return calc(0,0);
}

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