Submission #862495

#	Time	Username	Problem	Language	Result	Execution time	Memory
862495		sunwukong123	Packing Biscuits (IOI20_biscuits)	C++14	0 / 100	1 ms	348 KiB

biscuits

#include "biscuits.h"
#include <bits/stdc++.h>
using namespace std;
#define int long long 
void debug_out() {cerr<<endl;}
template <typename Head, typename... Tail>
void debug_out(Head _H, Tail... _T) {cerr<<" "<<to_string(_H);debug_out(_T...);}
#define debug(...) cerr<<"["<<#__VA_ARGS__<<"]:",debug_out(__VA_ARGS__)
const int MAXN = -1;
const int inf=1000000500ll;
const long long oo =1000000000000000500ll;
const int MOD = (int)1e9 + 7;
mt19937 rng(chrono::steady_clock::now().time_since_epoch().count());
typedef pair<int,int> pi; 
int ans;

long long count_tastiness(long long X, std::vector<long long> vec) {
	ans=1;//0
	int L=vec.size();
	while((int)vec.size()<2*L)vec.push_back(0);
	for(int i=0;i<2*L;i++){ // let's count the numbers st the biggest bit is 2^i
		int smallest=max(0ll,i-60);
		/*
		int debt=0;
		for(int j=i-1;j>=0;j--){ // let's find smallest j such that i can fill everything from [j,i-1]
			debt*=2;
			debt+=X;
			debt-=vec[j];
			if(debt<=0)smallest=min(smallest,j);
			if(debt>oo)break; // no way to repay
			debt=max(0ll,debt); 
		}*/
		int sum = 0;
		for(int j=i;j>=smallest;j--){
			__int128 t=1ll<<(j-smallest);
			sum+=(__int128)vec[j]*t;
		}
		__int128 res=sum/X;
		res=min(res,(__int128)(1ll<<(i-smallest+1))-1);
		res-=(__int128)(1ll<<(i-smallest));
		ans+=max(0ll,(int)res+1);
	}
	return ans;
}
 

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