/* 
VIM: let g:lcppflags="-std=c++11 -O2 -pthread"
VIM: let g:wcppflags="/O2 /EHsc /DWIN32"
VIM: let g:argv=""
*/
#include <iostream>
#include <exception>

void joke( const int x )
{
	std::cout << "("<< x << "+1)=" << -~x << std::endl;
	std::cout << "("<< x << "-1)=" << ~-x << std::endl;
}

int main ( void )
{try{

	joke(10);
	joke(-10);
	joke(0);

	return 0;
}
catch ( const std::exception& e )
{
	std::cerr << std::endl
			<< "std::exception(\"" << e.what() << "\")." << std::endl;
	return 2;
}
catch ( ... )
{
	std::cerr  << std::endl
			<< "unknown exception." << std::endl;
	return 1;
}}