Submission #65560

#	Time	Username	Problem	Language	Result	Execution time	Memory
65560		daniel_02	Boxes with souvenirs (IOI15_boxes)	C++17	100 / 100	518 ms	196072 KiB

boxes

    #include "boxes.h"
    #include <bits/stdc++.h>

    #define ll long long

    using namespace std;

    const int N = 1e7 + 3;

    ll dp[N], dp_suf[N];

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

        long long ans, res = 0;

        ans = 1LL * 1e18 + 7;

        for (int i = 0; i < N; i++)
        {
            if (i < K)
            {
                dp[i] = p[i] + min(L - p[i], p[i]);
            }
            else
            {
                dp[i] = (p[i] + min(L - p[i], p[i])) + dp[i - K];
            }
        }

        for (int i = N - 1; i >= 0; i--)
        {
            if (N - i - 1 < K)
            {
                dp_suf[i] = (L - p[i]) + min(L - p[i], p[i]);
            }
            else
            {
                dp_suf[i] = ((L - p[i]) + min(L - p[i], p[i])) + dp_suf[i + K];
            }
        }

        for (int i = 0; i < N; i++){
                ans = min(ans, dp[i] + dp_suf[i + 1]);
        }

        for (int i = 0; i < N; i += K)
        {
            res += (L - p[i]) + min(p[i], L - p[i]);
        }

        ans = min(ans, res);

        return ans;

        return ans;
    }

Compilation message (stderr)

boxes.cpp: In function 'long long int delivery(int, int, int, int*)':
boxes.cpp:12:52: warning: declaration of 'N' shadows a global declaration [-Wshadow]
     long long delivery(int N, int K, int L, int p[]) {
                                                    ^
boxes.cpp:8:15: note: shadowed declaration is here
     const int N = 1e7 + 3;
               ^

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