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  1. #include<bits/stdc++.h>
  2. #define int long long
  3. using namespace std;
  4. int32_t main()
  5. {
  6.     int t=1;
  7. //   cin>>t;
  8.     while(t--)
  9.     {
  10.         int x,y,z;
  11.         cin>>x>>y>>z;
  12.         int x1=0,x2=0;
  13.         if(x%z==0)
  14.             x1=x/z;
  15.         else
  16.             x1=(x/z)+1;
  17.  
  18.         if(y%z==0)
  19.             x2=y/z;
  20.         else
  21.             x2=(y/z)+1;
  22.  
  23.         cout<<x1*x2;
  24.         return 0;
  25.     }
  26. }
Success #stdin #stdout 0s 5324KB
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https://ideone.com/87NHbu
language:
C++ (gcc 8.3)
created:
9 hours ago
visibility:
public

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