Submission #1120921

#	Time	Username	Problem	Language	Result	Execution time	Memory
1120921		SalihSahin	Boxes with souvenirs (IOI15_boxes)	C++14	0 / 100	2 ms	336 KiB

boxes

#include <bits/stdc++.h>
#define pb push_back
using namespace std;
#include "boxes.h"

const long long inf = 1e18;

long long delivery(int N, int K, int L, int p[]) {
    vector<long long> dpl(N+1), dpr(N+1);
    for(int i = 1; i <= N; i++){
        if(i < K) dpl[i] = p[i-1] * 2;
        else dpl[i] = dpl[i - K] + p[i-1] * 2;
    }

    for(int i = N; i >= 1; i--){
        if(i < K) dpr[N-i+1] = (L - p[N-i]) * 2;
        else dpr[N-i+1] = dpr[(N-i+1) - K] + (L - p[N-i]) * 2;
    }

    long long ans = inf;
    for(int l = 0; l <= N; l++){
        for(int r = 0; r <= N; r++){
            if(l + r > N) break;

            int rem = N - l - r;
            long long calc = dpl[l] + dpr[r] + ((rem + K - 1)/K) * L;
            ans = min(ans, calc);
        }
    }

    return ans;
}

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