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  1. #include <cassert>
  2. #include <iostream>
  3. int main() {
  4.     typedef long long BigInteger;
  5.     BigInteger max/*("FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF");*/ = 0x0FFFFFFFFFFFFFFF;
  6.  
  7. for(BigInteger x0=1; x0<max;x0 *= 2) {
  8.     for(BigInteger x1=x0-1; x1<x0-2; ++x1) {
  9.         for(BigInteger y0=1; y0<=x1; y0*= 2) {
  10.             for(BigInteger y1=y0-1; y1<=y0+1; ++y1) {
  11.                 BigInteger p(x1*y1);
  12.                 if (x1) assert(p/x1==y1);
  13.                 if (y1) assert(p/y1==x1);
  14.             }
  15.         }
  16.     }
  17. }
  18. std::cout << "PASSED DIVISION TESTS";
  19.  
  20. }
Success #stdin #stdout 0s 2928KB
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stdin
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Standard input is empty
stdout
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PASSED DIVISION TESTS
https://ideone.com/VPMnuy
language:
C++14 (gcc 8.3)
created:
12 years ago
visibility:
secret

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