Submission #134757

#	Time	Username	Problem	Language	Result	Execution time	Memory
134757		tinjyu	Boxes with souvenirs (IOI15_boxes)	C++14	0 / 100	10 ms	504 KiB

boxes

#include "boxes.h"
#include <iostream>
long long int n,k,l,sum[10000005][2];
using namespace std;
long long delivery(int N, int K, int L, int p[]) {
    int mid=n;
    n=N;
    k=K;
    l=L;
    for(int i=0;i<n;i++)
    {
        if(l/2<=p[i+1])
        {
            mid=p[i];
            break;
        }
    }
    long long tmp=0;
    for(int i=mid-1;i>=0;i--)
    {
        if((i-mid)%k==0)tmp+=p[i];
        sum[i][0]=tmp;
    }
    for(int i=mid;i<n;i++)
    {
        if((i-mid)%k==0)tmp+=p[i];
        sum[i][1]=tmp;
    }
    long long int ans=sum[mid-1][0]*2+sum[n-1][1]*2;
    for(int i=mid;i>=mid-k && i>=0;i--)
    {
 
        tmp=sum[i][0]*2;
        if(i+k<n)tmp+=sum[i+k][1]*2;
        tmp+=l;
        ans=min(tmp,ans);
    }
    return ans;
}

Compilation message (stderr)

boxes.cpp: In function 'long long int delivery(int, int, int, int*)':
boxes.cpp:6:13: warning: conversion to 'int' from 'long long int' may alter its value [-Wconversion]
     int mid=n;
             ^

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