Submission #314893

#	Time	Username	Problem	Language	Result	Execution time	Memory
314893		kostia244	Packing Biscuits (IOI20_biscuits)	C++17	42 / 100	50 ms	20736 KiB

biscuits

#include "biscuits.h"
#include<bits/stdc++.h>
#define all(x) begin(x), end(x)
using namespace std;
using ll = long long;
const int B = 126, C = 10005;
ll count_tastiness(ll x, vector<ll> a) {
	ll dp[B+1][C];
	memset(dp, 0, sizeof dp);
	a.resize(B);
	for(int i = 0; i+1 < B; i++) {
		ll t = max(0ll, a[i]-x);
		t -= t&1;
		a[i] -= t;
		a[i+1] += t/2;
	}
	dp[0][0] = 1;
	for(int i = 0; i < B; i++)
		for(int r = 0; r < C; r++) {
			dp[i+1][(a[i]+r)/2] += dp[i][r];
			if(a[i]+r >= x) dp[i+1][(a[i]+r-x)/2] += dp[i][r];
		}
	return dp[B][0];
}

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