Submission #112976

#	Time	Username	Problem	Language	Result	Execution time	Memory
112976		andremfq	Boxes with souvenirs (IOI15_boxes)	C++17	10 / 100	2 ms	408 KiB

boxes

#include<bits/stdc++.h>
#include"boxes.h"
#define debug(args...)	//fprintf(stderr,args)
using namespace std;
const int MAXN=10000010;

int N,K,L,POS[MAXN];
long long int RESP,resp;
vector<long long int> v1,v2;

long long int delivery(int n,int k,int l,int pos[])
{
	long long int resp1=0,resp2=0,resp3=0;
	int qtdk=0,qtdk2=0,qtdk3=0;
	
	sort(pos,pos+n);
	
	for(int i=0;i<n;i++)
	{
		if(l/2>=pos[i])	v1.push_back(pos[i]);
		else				v2.push_back(pos[i]);
	}
	
	for(int i=0;i<v1.size();i++)	debug("v1[%d] = %d\n",i,v1[i]);
	debug("\n\n");
	
	for(int i=0;i<v2.size();i++)	debug("v2[%d] = %d\n",i,v2[i]);
	debug("\n\n");
	
	for(int i=0;i<v1.size();i++)
	{
		qtdk++;
		if(qtdk==k)	qtdk=0,	resp1+=2*v1[i];		
	}
	
	debug("resp = %d\n",resp1);
	
	int suv=(qtdk==0) ? 0 : k-qtdk;
	debug("suv = %d\n",suv);
	
	resp2+=l;
	for(int i=v2.size()-1;i>=suv;i--)
	{
		debug("RESP2 = %d\n",resp2);
		debug("I = %d\n",i);
		qtdk2++;
		if(i==suv && qtdk2!=k)	resp2+=2*(l-v2[i]);
		if(qtdk2==k) qtdk2=0,	resp2+=2*(l-v2[i]);
	}
	
	debug("resp2 = %d\n",resp2);
	
	resp3+=(qtdk==0) ? 0 : 2*v1.back();
	for(int i=v2.size()-1;i>=0;i--)
	{
		qtdk3++;
		if(i==0 && qtdk3!=k)	resp3+=2*(l-v2[i]);
		if(qtdk3==k) qtdk2=0,	resp3+=2*(l-v2[i]);
	}
	
	debug("resp3 = %d\n",resp3);
	
	resp=min(resp1+resp2,resp1+resp3);
	
	return resp;
}
/*
int main ()
{
	scanf("%d %d %d",&N,&K,&L);
	
	for(int i=0;i<N;i++)	scanf("%d",&POS[i]);
	
	RESP=delivery(N,K,L,POS);
	
	printf("%lld",RESP);	
}
/*
3 2 8
1 2 5
*/

Compilation message (stderr)

boxes.cpp:78:1: warning: "/*" within comment [-Wcomment]
 /*
  
boxes.cpp: In function 'long long int delivery(int, int, int, int*)':
boxes.cpp:24:15: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
  for(int i=0;i<v1.size();i++) debug("v1[%d] = %d\n",i,v1[i]);
              ~^~~~~~~~~~
boxes.cpp:27:15: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
  for(int i=0;i<v2.size();i++) debug("v2[%d] = %d\n",i,v2[i]);
              ~^~~~~~~~~~
boxes.cpp:30:15: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
  for(int i=0;i<v1.size();i++)
              ~^~~~~~~~~~
boxes.cpp:42:21: warning: conversion to 'int' from 'std::vector<long long int>::size_type {aka long unsigned int}' may alter its value [-Wconversion]
  for(int i=v2.size()-1;i>=suv;i--)
            ~~~~~~~~~^~
boxes.cpp:54:21: warning: conversion to 'int' from 'std::vector<long long int>::size_type {aka long unsigned int}' may alter its value [-Wconversion]
  for(int i=v2.size()-1;i>=0;i--)
            ~~~~~~~~~^~

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