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  1. #include <bits/stdc++.h>
  2. using namespace std;
  3.  
  4. int main() {
  5. 	int m,n,a;
  6. 	cin >> m >> n >> a;
  7. 	cout << (m+a-1)/a * (n+a-1)/a;
  8. 	return 0;
  9. }
Success #stdin #stdout 0s 5284KB
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stdin
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6 6 4
stdout
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4
https://ideone.com/KhBVMh
language:
C++ (gcc 8.3)
created:
2 days ago
visibility:
public

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