Submission #544121

#	Time	Username	Problem	Language	Result	Execution time	Memory
544121		krit3379	Boxes with souvenirs (IOI15_boxes)	C++14	0 / 100	1 ms	308 KiB

boxes

#include<bits/stdc++.h>
using namespace std;
#define N 10000005

long long dp1[N],dp2[N],ans=1e18;

long long delivery(int n,int k,int l,int pos[N]){
    int i;
    sort(pos,pos+n);
    for(i=0;i<n;i++){
        if(i>=k)dp1[i]=dp1[i-k]+2*pos[i];
        else dp1[i]=2*pos[i];
    }
    for(i=n-1;i>=0;i--){
        if(i+k<n)dp2[i]=dp2[i+k]+2*(l-pos[i]);
        else dp2[i]=2*(l-pos[i]);
    }
    for(i=0;i+1<n;i++)ans=min(ans,dp1[i]+dp2[i+1]);
    for(i=0;i+k+1<n;i++)ans=min(ans,dp1[i]+dp2[i+k+1]+l);
    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