Submission #437782

#	Time	Username	Problem	Language	Result	Execution time	Memory
437782		hhhhaura	Boxes with souvenirs (IOI15_boxes)	C++14	50 / 100	2080 ms	37304 KiB

boxes

#define wiwihorz
#include <bits/stdc++.h>
#pragma GCC optimize("Ofast")
#pragma loop-opt(on)

#define rep(i, a, b) for(int i = a; i <= b; i ++)
#define rrep(i, a, b) for(int i = b; i >= a; i--)
#define ceil(a, b) ((a + b - 1) / (b))
#define all(x) x.begin(), x.end()

#define INF 1000000000000000000
#define MOD 1000000007
#define eps (1e-9)

using namespace std;

#define ll long long int
#define lld long double
#define pii pair<int, int>
#define random mt19937 rnd(chrono::steady_clock::now().time_since_epoch().count())

#ifdef wiwihorz
#define print(a...) cerr << "line " << __LINE__ << ": ", kout("[" + string(#a) + "] = ", a)
void vprint(auto L, auto R) { while(L < R) cerr << *L << " \n"[next(L) == R], ++L;}
void kout() { cerr << endl; }
template<class T1, class ... T2> void kout(T1 a, T2 ... e) { cerr << a << " ", kout(e...);}
#else
#define print(...) 0
#define vprint(...) 0
#endif 
#include "boxes.h"
int n, k, l;
vector<ll> pos, dp1, dp2;
void init_(int _n, int _k, int _l) {
	n = _n, k = _k, l = _l;
	pos.assign(n + 1, 0);
	dp1.assign(n + 1, INF);
	dp2.assign(n + 1, INF);
}
ll solve() {
	dp1[0] = 0, dp2[0] = 0;
	rep(i, 1, n) {
		rep(j, 1, k) {
			if(i - j >= 0) dp1[i] = min(dp1[i], dp1[i - j] + 2 * pos[i]);
			if(i - j >= 0) dp2[i] = min(dp2[i], dp2[i - j] + 2 * (l - pos[n - i + 1]));
		}
	}
	ll ans = INF;
	rep(i, 0, n) rep(j, i, n) {
		ll cur = dp1[i] + ceil(j - i, k) * (ll)l + dp2[n - j];
		ans = min(ans, cur);
	}
	return ans;
}
ll delivery(int N, int K, int L, int p[]) {
	init_(N, K, L);
	rep(i, 0, N - 1) pos[i + 1] = p[i];
	return solve(); 
}

Compilation message (stderr)

boxes.cpp:4: warning: ignoring '#pragma loop ' [-Wunknown-pragmas]
    4 | #pragma loop-opt(on)
      | 
boxes.cpp:24:13: warning: use of 'auto' in parameter declaration only available with '-fconcepts-ts'
   24 | void vprint(auto L, auto R) { while(L < R) cerr << *L << " \n"[next(L) == R], ++L;}
      |             ^~~~
boxes.cpp:24:21: warning: use of 'auto' in parameter declaration only available with '-fconcepts-ts'
   24 | void vprint(auto L, auto R) { while(L < R) cerr << *L << " \n"[next(L) == R], ++L;}
      |                     ^~~~

• Subtask 1: 10 / 10
• Subtask 2: 10 / 10
• Subtask 3: 15 / 15
• Subtask 4: 15 / 15
• Subtask 5: 0 / 20
• Subtask 6: 0 / 30