Submission #71779

#	Time	Username	Problem	Language	Result	Execution time	Memory
71779		zubec	Boxes with souvenirs (IOI15_boxes)	C++14	10 / 100	3 ms	476 KiB

boxes

#include "boxes.h"
#include <bits/stdc++.h>
using namespace std;
typedef long long ll;

const int N = 10000010;

int n, k, l, a[N];
long long delivery(int N, int K, int L, int p[]) {
    ll ans1 = 0, ans2 = 0;
    n = N;
    k = K;
    l = L;
    for (int i = 1; i <= n; i++)
        a[i] = p[i-1];
    for (int i = 1; i <= n; i+=k){
        int nxt = min(n, i+k-1);
        ans1 += min(a[i], l-a[i]);
        ans1 += abs(a[i]-a[nxt]);
        ans1 += min(a[nxt], l-a[nxt]);
    }
    reverse(a+1, a+n+1);
    for (int i = 1; i <= n; i+=k){
        int nxt = min(n, i+k-1);
        ans2 += min(a[i], l-a[i]);
        ans2 += abs(a[i]-a[nxt]);
        ans2 += min(a[nxt], l-a[nxt]);
    }
    return min(ans1, ans2);

}

Compilation message (stderr)

boxes.cpp: In function 'long long int delivery(int, int, int, int*)':
boxes.cpp:9:48: warning: declaration of 'N' shadows a global declaration [-Wshadow]
 long long delivery(int N, int K, int L, int p[]) {
                                                ^
boxes.cpp:6:11: note: shadowed declaration is here
 const int N = 10000010;
           ^

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