Submission #747955

#	Time	Username	Problem	Language	Result	Execution time	Memory
747955		Abrar_Al_Samit	Boxes with souvenirs (IOI15_boxes)	C++17	10 / 100	1 ms	312 KiB

boxes

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

const int nax = 1e3 + 3;
const long long INF = 1e18;


long long dp[nax];
int n, k, L;
int a[nax];
int c[nax];

long long delivery(int N, int K, int l, int p[]) {
    n = N, k = K, L = l;
    for(int i=1; i<=n; ++i) {
        a[i] = p[i-1];
        c[i] = min(a[i], L-a[i]);
    }
    a[n+1] = 2e9 + 10;

    for(int i=1; i<=n+1; ++i) {
        dp[i] = INF;
    }
    dp[1] = c[1];


    //dp is increasing
    

    //dp[i] = # of seconds to fill [1...i] with k-1 gifts remaining
    for(int i=2; i<=n; ++i) {
        for(int j=i-1; j>0 && i-j<=k; --j) {
            dp[i] = min(dp[i], 
                dp[j] + min(a[i-1]-a[j], a[j+1]-a[j]));
        }

        dp[i] += c[i-1] + c[i];
    }


    long long ans = INF;
    for(int i=1; i<=n; ++i) {
        if(i+k-1>=n) {
            ans = min(ans, dp[i] + L-a[i]);
            if(i==n) ans = min(ans, dp[i] + a[i]);
        }
    }
    return ans;
}

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