#include <iostream>
int main{
std::cout << ("Enter side 1: ") << std:endl;
std::cin >> s1;
std::cout << ("Enter side 2: ") << std:endl;
std::cin >> s2;
std::cout << ("Enter side 3: ") << std:endl;
std::cin >> s3;
std::cout << ("Enter side 4: ") << std:endl;
std::cin >> s4;
if((s1 | s2) ==  ( s3 | s4)) //Check a pair of sides are congruent.
{
std::cout << ("It's a square!") << std::endl;
}
else
{
std::cout << ("It's a rectangle!") << std::endl;
}
return(0);
}