Submission #225700

#	Time	Username	Problem	Language	Result	Execution time	Memory
225700		staniewzki	Boxes with souvenirs (IOI15_boxes)	C++17	100 / 100	885 ms	151912 KiB

boxes

#include<bits/stdc++.h>
using namespace std;
 
#define REP(i, n) for(int i = 0; i < n; i++)
#define FOR(i, a, b) for(int i = a; i <= b; i++)
#define ST first
#define ND second
 
ostream& operator<<(ostream &out, string str) {
	for(char c : str) out << c;
	return out;
}
 
template<class L, class R> ostream& operator<<(ostream &out, pair<L, R> p) {
	return out << "(" << p.ST << ", " << p.ND << ")";
}
 
template<class T> auto operator<<(ostream &out, T a) -> decltype(a.begin(), out) {
	out << "{";
	for(auto it = a.begin(); it != a.end(); it = next(it))
		out << (it != a.begin() ? ", " : "") << *it;
	return out << "}";
}
 
void dump() { cerr << "\n"; }
template<class T, class... Ts> void dump(T a, Ts... x) {
	cerr << a << ", ";
	dump(x...);
}
 
#ifdef DEBUG
#  define debug(...) cerr << "[" #__VA_ARGS__ "]: ", dump(__VA_ARGS__)
#else
#  define debug(...) false
#endif
 
template<class T> int size(T && a) { return (int) a.size(); }
 
using LL = long long;
using PII = pair<int, int>;

#include "boxes.h"

long long delivery(int N, int K, int L, int p[]) {
	sort(p, p + N);

	vector<LL> left(K), right(K);
	REP(i, N)
		left[(i + 1) % K] += min(2 * p[i], L);

	LL ans = left[N % K];
	for(int i = N - 1; i >= 0; i--) {
		left[(i + 1) % K] -= min(2 * p[i], L);
		right[i % K] += min(2 * (L - p[i]), L);
		ans = min(ans, left[i % K] + right[i % K]);
	}

	return ans;
}

• Subtask 1: 10 / 10
• Subtask 2: 10 / 10
• Subtask 3: 15 / 15
• Subtask 4: 15 / 15
• Subtask 5: 20 / 20
• Subtask 6: 30 / 30