Submission #162723

#	Time	Username	Problem	Language	Result	Execution time	Memory
162723		RoundMango	Boxes with souvenirs (IOI15_boxes)	C++14	10 / 100	9 ms	504 KiB

boxes

#include <bits/stdc++.h>
#include "boxes.h"
using namespace std;
long long n, k, l, m, cnt, t, a, lft[10000], ans, x, y, v, ans1, rt[10000], curr;
long long delivery(int N, int K, int L, int p[]) {
	n = N;
	k = K;
	l = L;
	for (int i = 0; i < n; i++) {
		if (p[i] <= l-p[i]) lft[a] = p[i], a++;
		else rt[v] = l-p[i], v++;
	}
	t = a-k+1;
	ans = 1e18;
	for (int i = 0; i < k; i++) {
		curr = ans;
		ans = 0;
		x = t+i;
		y = t+i+k;
		if (t < 0) t = 0;
		for (int j = 0; j < x; j++) {
			cnt++;
			if (cnt%k == 0) ans += 2*p[j], cnt = 0;
		}
		if (cnt) ans += 2*p[x-1], cnt = 0;
		for (int j = t+i+k; j < n; j++) {
			cnt++;
			if (cnt%k == 0) ans += (l-p[j-k+1])*2, cnt = 0;
		}
		if (cnt) ans += 2*(l - p[n-cnt%k]), cnt = 0;
		ans = min(ans, curr);
	}
	ans += l;
	for (int i = 0; i < a; i++) {
		cnt++;
		if (cnt%k == 0) ans1 += lft[i], cnt = 0;
	}
	if (cnt) ans1 += 2*lft[a-1], cnt = 0;
	sort(rt,rt+v);
	for (int i = 0; i < v; i++) {
		cnt++;
		if (cnt%k == 0) ans1 += rt[i], cnt = 0;
	}
	if (cnt) ans1 += 2*rt[v-1], cnt = 0;
	return min(2*ans1,ans);
}

Compilation message (stderr)

boxes.cpp: In function 'long long int delivery(int, int, int, int*)':
boxes.cpp:26:19: warning: conversion to 'int' from 'long long int' may alter its value [-Wconversion]
   for (int j = t+i+k; j < n; j++) {
                ~~~^~

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