Submission #303694

#	Time	Username	Problem	Language	Result	Execution time	Memory
303694		junseo	Packing Biscuits (IOI20_biscuits)	C++17	Compilation error	0 ms	0 KiB

biscuits

#include "biscuits.h"
#include <bits/stdc++.h>
#define fi first
#define se second
#define eb emplace_back
#define all(v) (v).begin(), (v).end()
#define rmin(r, x) r = min(r, x)
#define rmax(r, x) r = max(r, x)
#define ends ' '
#define endl '\n'
#define fastio ios_base::sync_with_stdio(0), cin.tie(0)
#pragma GCC optimize("O3")
#pragma GCC target("avx,avx2")
using namespace std;
typedef long long ll;
typedef pair<int, int> pii;
typedef pair<ll, ll> pll;

const int maxk = 65;

int k;
ll s[maxk];

inline long long count_tastiness(long long x, std::vector<long long> a) {
	k = a.size();
	a.resize(maxk);
	s[0] = a[0];
	for(int i = 1; i <= 60; ++i)	s[i] = s[i - 1] + (1LL << i) * a[i];
	
	vector<ll> ans;
	ans.eb(0);
	for(register int i = 0; (1LL << i) <= s[60] && i <= 60; ++i) {
		int st = 0, ed = ans.size() - 1, r = -1;
		while(st <= ed) {
			int mid = st + ed >> 1;
			if(s[i] >= (__int128)(ans[mid] + (1LL << i)) * x)	{
				r = mid;
				st = mid + 1;
			}
			else	ed = mid - 1;
		}
		for(register int j = 0; j <= r; ++j) {
			ans.eb(ans[j] + (1LL << i));
		}
	}
	assert(ans.size() <= 2e5);
	return ans.size();
}

Compilation message (stderr)

biscuits.cpp: In function 'long long int count_tastiness(long long int, std::vector<long long int>)':
biscuits.cpp:32:19: warning: ISO C++17 does not allow 'register' storage class specifier [-Wregister]
   32 |  for(register int i = 0; (1LL << i) <= s[60] && i <= 60; ++i) {
      |                   ^
biscuits.cpp:35:17: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
   35 |    int mid = st + ed >> 1;
      |              ~~~^~~~
biscuits.cpp:42:20: warning: ISO C++17 does not allow 'register' storage class specifier [-Wregister]
   42 |   for(register int j = 0; j <= r; ++j) {
      |                    ^
/tmp/ccFJ0TXx.o: In function `main':
grader.cpp:(.text.startup+0x42a): undefined reference to `count_tastiness(long long, std::vector<long long, std::allocator<long long> >)'
collect2: error: ld returned 1 exit status