Submission #830689

#	Time	Username	Problem	Language	Result	Execution time	Memory
830689		drdilyor	Boxes with souvenirs (IOI15_boxes)	C++17	0 / 100	1 ms	300 KiB

boxes

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

long long delivery(int n, int k, int len, int p[]) {
    int mid1 = len / 2;
    int mid2 = (len+1) / 2;

    ll res = 0;
    int li = -1, ri = n;
    for (int i =0; i < n; i++) {
        if (p[i] > mid1) break;
        if (i % k == k-1) {
            li = i;
            res += p[i] * 2;
        }
    }
    for (int i = 0; i < n; i++) {
        int j = n - i - 1;
        if (p[j] < mid2) break;
        if (i % k == k-1) {
            ri = j;
            res += (n - p[j]) * 2;
        }
    }
    const ll infl = 1e18;
    int cnt = ri - li - 1;
    if (cnt <= k) {
        res += min({len, p[li+1] * 2, (len - p[ri-1]) * 2});
    } else {
        res += len + min({len, p[li + k + 1] * 2, (len - p[ri - k - 1]) * 2});
    }
    return res;
}

Compilation message (stderr)

boxes.cpp: In function 'long long int delivery(int, int, int, int*)':
boxes.cpp:27:14: warning: unused variable 'infl' [-Wunused-variable]
   27 |     const ll infl = 1e18;
      |              ^~~~

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