제출 #1051751

#제출 시각아이디문제언어결과실행 시간메모리
1051751fuad27비스킷 담기 (IOI20_biscuits)C++17
9 / 100
1054 ms63572 KiB
#include "biscuits.h"
#include <bits/stdc++.h>
#pragma GCC optimize("O3")
#pragma GCC target("avx2")
using namespace std;
long long X;
vector<long long> A;
int k;
// long long dp[61][200020];
map<int, map<long long, int>> dp;
long long cnt=0;
long long solve(int i, long long add) {
	if(i == k)return 1;
	if(dp[i].find(add)!=dp[i].end())return dp[i][add];
	dp[i][add]=0;
	cnt++;
	if(add+A[i] >= X) {
		dp[i][add] += solve(i+1, (add+A[i]-X)/2);
	}
	dp[i][add] += solve(i+1, (add+A[i])/2);
	return dp[i][add];
}
long long count_tastiness(long long x, std::vector<long long> a) {
	dp.clear();
	X=x;
	A=a;
	k = 60;
	A.resize(61);
//	memset(dp, -1, sizeof dp);
	for(int i = 0;i<k;i++) {
		if(A[i] > x) {
			long long c = A[i]-x;
			A[i+1] += c/2;
			c/=2;
			c*=2;
			A[i] -= c;
		}
	}
	long long res = solve(0, 0);
	return res;
}
 
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