Submission #1055541

#	Time	Username	Problem	Language	Result	Execution time	Memory
1055541		Trent	Packing Biscuits (IOI20_biscuits)	C++17	0 / 100	1 ms	348 KiB

biscuits

#include "biscuits.h"
#include "bits/stdc++.h"
using namespace std;
#define forR(i, x) for(int i = 0; i < (x); ++i)
#define REP(i, a, b) for(int i = (a); i < (b); ++i)
#define all(x) x.begin(), x.end()
typedef long long ll;
typedef vector<ll> vll;

ll valOf(ll msk, vll& dc) {
	ll ret = 0;
	forR(i, dc.size()) if(msk & (1 << i)) ret += dc[dc.size() - 1 - i];
	return ret;
}
long long count_tastiness(long long x, std::vector<long long> a) {
	int k = a.size();
	vll vals = {a[0]};
	forR(i, k) {
		if(i + 1 < k) {
			vll nex;
			for(ll j : vals) {
				nex.push_back(j / 2 + a[i+1]);
				if(x <= j) nex.push_back((j-x) / 2 + a[i+1]);
			}
			vals.swap(nex);
		} else {
			ll tot = 0;
			for(ll j : vals) tot += j >= x ? 2 : 1;
			return tot;
		}
	}
}

Compilation message (stderr)

biscuits.cpp: In function 'll valOf(ll, vll&)':
biscuits.cpp:4:37: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<long long int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
    4 | #define forR(i, x) for(int i = 0; i < (x); ++i)
      |                                     ^
biscuits.cpp:12:2: note: in expansion of macro 'forR'
   12 |  forR(i, dc.size()) if(msk & (1 << i)) ret += dc[dc.size() - 1 - i];
      |  ^~~~
biscuits.cpp: In function 'long long int count_tastiness(long long int, std::vector<long long int>)':
biscuits.cpp:17:18: warning: control reaches end of non-void function [-Wreturn-type]
   17 |  vll vals = {a[0]};
      |                  ^

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