Submission #67757

#	Time	Username	Problem	Language	Result	Execution time	Memory
67757		theknife2001	Boxes with souvenirs (IOI15_boxes)	C++17	0 / 100	2 ms	380 KiB

boxes

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

using namespace std;
const int N=1e7+55;
long long dp[N][2];
int n;

long long delivery(int N, int k, int L, int p[])
{
    n=N;
    int x;
    int temp=0;
    bool q=0;
    for(int i=0;i<n;i++)
    {
        x=k;
        while(x--&&i<n)
        {
            dp[i][0]=temp+p[i];
            i++;
        }
        i--;
        temp+=p[i]+min(p[i],L-p[i]);
    }
    temp=0;
    for(int i=n-1;i>=0;i--)
    {
        x=k;
        while(x--&&i<n)
        {
            dp[i][1]=temp+(L-p[i]);
            i--;
        }
        i++;
        temp+=L-p[i]+min(p[i],L-p[i]);
    }
    long long ans=1e18;
    for(int i=0;i<n;i++)
    {
        ans=min(dp[i][0]+(i+1<n?dp[i+1][1]:0)+min(p[i],L-p[i])+(i+1<n?min(p[i+1],L-p[i+1]):0),ans);
    }
    return ans;
}

Compilation message (stderr)

boxes.cpp: In function 'long long int delivery(int, int, int, int*)':
boxes.cpp:10:48: warning: declaration of 'N' shadows a global declaration [-Wshadow]
 long long delivery(int N, int k, int L, int p[])
                                                ^
boxes.cpp:6:11: note: shadowed declaration is here
 const int N=1e7+55;
           ^
boxes.cpp:15:10: warning: unused variable 'q' [-Wunused-variable]
     bool q=0;
          ^

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