Submission #619137

#	Time	Username	Problem	Language	Result	Execution time	Memory
619137		amin	Boxes with souvenirs (IOI15_boxes)	C++14	10 / 100	1 ms	340 KiB

boxes

#include "boxes.h"
#include <bits/stdc++.h>
 using namespace std;
long long delivery(int N, int K, int L, int p[]) {
   long long n=N;
   long long k=K;
   long long l=L;
   sort(p,p+n);
   long long preo[n];
   long long pree[n];

   long long ans[n];
   long long v=0;
   for(long i=0;i<n;i++)
   {
       if(p[i]>l/2)
        break;


       long long sum=0;
       for(long y=i;y>=0;y-=k)
       {
           sum+=p[y];

       }
       ans[i]=sum*2;
       v+=2*p[i];

   }
    for(long i=n-1;i>=0;i--)
   {
        if(p[i]<=l/2)
       {
           break;
       }
       long long sum=0;
     for(long y=i;y<n;y+=k)
     {
         sum+=(l-p[y]);
     }
     ans[i]=sum*2;
     v+=2*(l-p[i]);
   }
   return v;
   long long h=1e18;
   long long f=0;
for(long long i=0;i<=ceil(n/k);i++)
{
    long long num=n-i*k;
long long f=i*l;
long long j;
j=1e18;
    if(num<=0)
    {
        h=min(h,f);
        break;
    }
 //   cout<<num<<endl;
// cout<<num<<endl;
 if(p[n-num]>l/2)
 {
   j=min(j,f+ans[n-num]);
 }

    for(long y=0;y<num;y++)
    {
      //  cout<<y<<' '<<i*k+y+1<<endl;
    f=i*l;
        if(p[y]>l/2)
        {
            break;
        }
if(y+i*k+1==n)
{
    j=min(j,f+ans[y]);
    break;
}
if(y+i*k+1>n)
{
    break;
}
        if(p[y+i*k+1]<=l/2)
        {
            continue;
        }
        f+=ans[y];
        f+=ans[i*k+y+1];
        j=min(j,f);
     //   cout<<y<<' '<<i*k+y+1<<endl;

    }
    //cout<<j<<endl;
    h=min(h,j);
  //  cout<<j<<endl;


}
return h;
}

Compilation message (stderr)

boxes.cpp: In function 'long long int delivery(int, int, int, int*)':
boxes.cpp:47:19: warning: conversion from 'long long int' to '__gnu_cxx::__enable_if<true, double>::__type' {aka 'double'} may change value [-Wconversion]
   47 | for(long long i=0;i<=ceil(n/k);i++)
      |                   ^
boxes.cpp:50:11: warning: declaration of 'f' shadows a previous local [-Wshadow]
   50 | long long f=i*l;
      |           ^
boxes.cpp:46:14: note: shadowed declaration is here
   46 |    long long f=0;
      |              ^
boxes.cpp:9:14: warning: unused variable 'preo' [-Wunused-variable]
    9 |    long long preo[n];
      |              ^~~~
boxes.cpp:10:14: warning: unused variable 'pree' [-Wunused-variable]
   10 |    long long pree[n];
      |              ^~~~
boxes.cpp:46:14: warning: unused variable 'f' [-Wunused-variable]
   46 |    long long f=0;
      |              ^

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