INTEG - Editorial

editorial
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16
  • List item
  • #include<stdio.h>
    #include<stdlib.h>
    long long int sum=0;
    int count(int a[],int x,int n)
    {
    long long int i,k=0;
    for(i=0;i<n;i++)
    {
    if(a[i]<0) k++;
    }
    if(x<=k)
    {
    for(i=0;i<n;i++)
    {
    a[i]=a[i]+1;
    }
    sum = sum + x;
    count(a,x,n);
    }
    else if(x>k)
    {
    for(i=0;i<n;i++)
    {
    if(a[i]<0)
    {
    sum = sum + abs(a[i]);
    }
    }
    //printf("%d “,sum);
    }
    return sum;
    }
    int main()
    {
    int n,i,x,a[10005];
    scanf(”%d",&n);
    for(i=0;i<n;i++)
    {
    scanf("%d",&a[i]);
    }
    scanf("%d",&x);
    if(x!=0)
    {
    sum = count(a,x,n);
    printf("%d",sum);
    }
    else if(x==0)
    printf("%d",0);
    return 0;
    }

why this code is giving run time error

17

enter code here
#include<stdio.h>
#include<stdlib.h>
long long int sum=0;
int count(int a[],int x,int n)
{
long long int i,k=0;
for(i=0;i<n;i++)
{
if(a[i]<0) k++;
}
if(x<=k)
{
for(i=0;i<n;i++)
{
a[i]=a[i]+1;
}
sum = sum + x;
count(a,x,n);
}
else if(x>k)
{
for(i=0;i<n;i++)
{
if(a[i]<0)
{
sum = sum + abs(a[i]);
}
}
//printf("%d “,sum);
}
return sum;
}
int main()
{
int n,i,x,a[10005];
scanf(”%d",&n);
for(i=0;i<n;i++)
{
scanf("%d",&a[i]);
}
scanf("%d",&x);
if(x!=0)
{
sum = count(a,x,n);
printf("%d",sum);
}
else if(x==0)
printf("%d",0);
return 0;
}

why this code is giving run time error

18

Heading

#include<stdio.h>
#include<stdlib.h>
long long int sum=0;
int count(int a[],int x,int n)
{
long long int i,k=0;
for(i=0;i<n;i++)
{
if(a[i]<0) k++;
}
if(x<=k)
{
for(i=0;i<n;i++)
{
a[i]=a[i]+1;
}
sum = sum + x;
count(a,x,n);
}
else if(x>k)
{
for(i=0;i<n;i++)
{
if(a[i]<0)
{
sum = sum + abs(a[i]);
}
}
//printf("%d “,sum);
}
return sum;
}
int main()
{
int n,i,x,a[10005];
scanf(”%d",&n);
for(i=0;i<n;i++)
{
scanf("%d",&a[i]);
}
scanf("%d",&x);
if(x!=0)
{
sum = count(a,x,n);
printf("%d",sum);
}
else if(x==0)
printf("%d",0);
return 0;
}

why this code is giving run time error

19

#include<stdio.h>
#include<stdlib.h>
long long int sum=0;
int count(int a[],int x,int n)
{
long long int i,k=0;
for(i=0;i<n;i++)
{
if(a[i]<0) k++;
}
if(x<=k)
{
for(i=0;i<n;i++)
{
a[i]=a[i]+1;
}
sum = sum + x;
count(a,x,n);
}
else if(x>k)
{
for(i=0;i<n;i++)
{
if(a[i]<0)
{
sum = sum + abs(a[i]);
}
}
//printf("%d “,sum);
}
return sum;
}
int main()
{
int n,i,x,a[10005];
scanf(”%d",&n);
for(i=0;i<n;i++)
{
scanf("%d",&a[i]);
}
scanf("%d",&x);
if(x!=0)
{
sum = count(a,x,n);
printf("%d",sum);
}
else if(x==0)
printf("%d",0);
return 0;
}

why this code is giving run time error

20
  1. List item
  2. #include<stdio.h>
    #include<stdlib.h>
    long long int sum=0;
    int count(int a[],int x,int n)
    {
    long long int i,k=0;
    for(i=0;i<n;i++)
    {
    if(a[i]<0) k++;
    }
    if(x<=k)
    {
    for(i=0;i<n;i++)
    {
    a[i]=a[i]+1;
    }
    sum = sum + x;
    count(a,x,n);
    }
    else if(x>k)
    {
    for(i=0;i<n;i++)
    {
    if(a[i]<0)
    {
    sum = sum + abs(a[i]);
    }
    }
    //printf("%d “,sum);
    }
    return sum;
    }
    int main()
    {
    int n,i,x,a[10005];
    scanf(”%d",&n);
    for(i=0;i<n;i++)
    {
    scanf("%d",&a[i]);
    }
    scanf("%d",&x);
    if(x!=0)
    {
    sum = count(a,x,n);
    printf("%d",sum);
    }
    else if(x==0)
    printf("%d",0);
    return 0;
    }

why this code is giving run time error

1 Like
21
  • List item
  • #include<stdio.h>
    #include<stdlib.h>
    long long int sum=0;
    int count(int a[],int x,int n)
    {
    long long int i,k=0;
    for(i=0;i<n;i++)
    {
    if(a[i]<0) k++;
    }
    if(x<=k)
    {
    for(i=0;i<n;i++)
    {
    a[i]=a[i]+1;
    }
    sum = sum + x;
    count(a,x,n);
    }
    else if(x>k)
    {
    for(i=0;i<n;i++)
    {
    if(a[i]<0)
    {
    sum = sum + abs(a[i]);
    }
    }
    //printf("%d “,sum);
    }
    return sum;
    }
    int main()
    {
    int n,i,x,a[10005];
    scanf(”%d",&n);
    for(i=0;i<n;i++)
    {
    scanf("%d",&a[i]);
    }
    scanf("%d",&x);
    if(x!=0)
    {
    sum = count(a,x,n);
    printf("%d",sum);
    }
    else if(x==0)
    printf("%d",0);
    return 0;
    }

why this code is giving run time error

22

https://www.codechef.com/viewsolution/13694068

what is wrong with my solution?
khopri udd gaya

23

What is wrong with my code?CodeChef: Practical coding for everyone

24

test cases contain an array with at least one negative element. so, 0 as an answer is not possible.
this is my solution using prefix sum and sorting.
link text

25

All links to the solutions broken

1 Like
26

Change the statement :-
long long int temp = v[v.size()-cost] * cost
to
long long int temp = v[cost-1] * cost, then it will be AC…)

2 Likes
27

Sorry, that was a typo. it should be K ≥ X. Corrected. Thanks for pointing out.

28

for which test case does my [solution][1] fail?
[1]: CodeChef: Practical coding for everyone

29

You need to store answer in long long as it can exceed limits of int

30

Thanks here’s the [modified solution][1] but I’m still getting WA. I need the test case where it fails
[1]: CodeChef: Practical coding for everyone

31

did not handle x = 0 case

2 Likes
32

That solved the problem… Thanks!

33

Looks like abs in C works only for 32 bit numbers.


if(x >= count_negetive)
		return abs(sum_negetive);

was the curlprit. Changing it gets AC

1 Like
34

Thank you so much for your help @utkarsh_lath :diamonds::diamonds:

35

really a neat approach… :slight_smile:

1 Like