Help me in solving BOOKPACK problem

help
,
1

My issue

include <bits/stdc++.h>
using namespace std;

int main() {
int t;
cin>>t;
while(t–)
{
int x,y,z;
cin>>x>>y>>z;
cout<<x*(ceil(y/(z*1.0)))<<endl;
}
return 0;
}

My code is working fine with the given test cases, still it is not working on one last hidden test case.
I also saw the submissions due to this problem yet was unable to find the problem.
Can anyone help me with what is wrong with my solution, or is there something I am missing here?

My code

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

int main() {
	int t;
	cin>>t;
	while(t--)
	{
	    int x,y,z;
	    cin>>x>>y>>z;
	    cout<<x*(ceil(y/(z*1.0)))<<endl;
	}
	return 0;
}

Problem Link: BOOKPACK Problem - CodeChef

2

@lakshay102
just calculate the ceiling part and store it in separate variable.
like this

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

int main() {
	int t;
	cin>>t;
	while(t--)
	{
	    int x,y,z;
	    cin>>x>>y>>z;
	    int val=ceil(y*1.0/z*1.0);
	    cout<<x*val<<endl;
	}
	return 0;
}