Submission #799492

#	Time	Username	Problem	Language	Result	Execution time	Memory
799492		QwertyPi	Packing Biscuits (IOI20_biscuits)	C++14	9 / 100	1045 ms	340 KiB

biscuits

#include "biscuits.h"
#include <bits/stdc++.h>

using namespace std;

const int MAXK = 60;
long long count_tastiness(long long x, vector<long long> a) {
	a.resize(MAXK); vector<long long> pw2(MAXK), s(MAXK);
	pw2[0] = 1; for(int i = 1; i < MAXK; i++) pw2[i] = pw2[i - 1] * 2;
	s[0] = a[0]; for(int i = 1; i < MAXK; i++) s[i] = s[i - 1] + a[i] * pw2[i];
	for(int i = 0; i < MAXK; i++) s[i] /= x;
	int ans = 0;
	for(long long y = 0; y <= 100000; y++){
		bool ok = true;
		for(int k = 0; k < MAXK; k++){
			int _y = y & ((1LL << k + 1) - 1);
			ok &= _y <= s[k];
		}
		ans += ok;
	}
	return ans;
}

Compilation message (stderr)

biscuits.cpp: In function 'long long int count_tastiness(long long int, std::vector<long long int>)':
biscuits.cpp:16:28: warning: suggest parentheses around '+' inside '<<' [-Wparentheses]
   16 |    int _y = y & ((1LL << k + 1) - 1);
      |                          ~~^~~

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