Submission #303608

#	Time	Username	Problem	Language	Result	Execution time	Memory
303608		cgiosy	Packing Biscuits (IOI20_biscuits)	C++17	0 / 100	1092 ms	384 KiB

biscuits

#include "biscuits.h"
#include <bits/stdc++.h>
using namespace std;
using ll=long long;

ll count_tastiness(ll x, vector<ll> A) {
	const int N=A.size();
	vector<ll> D(N);
	for(int i=1; i<N; i++) A[i]=A[i-1]+(A[i]<<i);
	D[0]=(A[0]>=x)+1;
	for(int i=1; i<N; i++) {
		D[i]=D[i-1];
		ll v=min(A[i]/x, (ll(1)<<i+1)-1);
		if(!(v&1<<i)) continue;
		D[i]++;
		v^=1<<i;
		while(v) {
			int j=63-__builtin_clzll(v);
			v^=1<<j;
			D[i]+=j ? D[j-1] : 1;
		}
	}
	return D[N-1];
}

Compilation message (stderr)

biscuits.cpp: In function 'll count_tastiness(ll, std::vector<long long int>)':
biscuits.cpp:13:29: warning: suggest parentheses around '+' inside '<<' [-Wparentheses]
   13 |   ll v=min(A[i]/x, (ll(1)<<i+1)-1);
      |                            ~^~

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