#include <iostream>
using namespace std;
int main()
{
int n,m,a,c=1,d=1,sum=0;
cin >> n >> m >> a;
if(n%a==0)
{
c=0;
}
if(m%a==0)
{
d=0;
}
sum=((n/a+c)*(m/a+d));
cout << sum << endl;
}
#include <iostream>
using namespace std;
int main()
{
int n,m,a,c=1,d=1,sum=0;
cin >> n >> m >> a;
if(n%a==0)
{
c=0;
}
if(m%a==0)
{
d=0;
}
sum=((n/a+c)*(m/a+d));
cout << sum << endl;
}
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本文标题：1A - Theatre Square
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