Submission #747971

#	Time	Username	Problem	Language	Result	Execution time	Memory
747971		Abrar_Al_Samit	Boxes with souvenirs (IOI15_boxes)	C++17	50 / 100	45 ms	18132 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];
 
int get(int i, int j) {
    if(i==j) return 0;
    return min(a[j]-a[i], c[i]+c[i+1]+a[j]-a[i+1]);
}
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]);
    }
 
    for(int i=1; i<=n+1; ++i) {
        dp[i] = INF;
    }
    dp[1] = c[1];
 
    for(int i=1; i<=n; ++i) {
        for(int j=0; j<k && i+j+1<=n; ++j) {
            dp[i+j+1] = min(dp[i+j+1], dp[i] + get(i, i+j) + c[i+j] + c[i+j+1]);
        }
    }
 
    long long ans = INF;
    for(int i=1; i<=n; ++i) {
        if(i+k-1>=n) {
            ans = min(ans, a[n]-a[i]+dp[i]+c[n]);
        }
    }
    return ans;
}

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