#include <iostream>
#include "head_1.h"
#include "head_2.h"
#include "head_3.h"
using namespace std;
__int32 main ( ) {
/*__int32 a = IN::READS ( );
printer.print ( a );
printer.print ( "\n" );*/
system ( "pause" );
return 0;
}
head_1:
#pragma once
#include <iostream>
#include <string>
using namespace std;
namespace equ {
double add ( double a , double b ) {
return a + b;
}
double sub ( double a , double b ) {
return a - b;
}
double mul ( double a , double b ) {
return a * b;
}
double div ( double a , double b ) {
return a / b;
}
double mod ( double a , double b ) {
return a - a / b * b;
}
double auto_inc ( double a ) {
return a + 1;
}
double auto_dec ( double a ) {
return a - 1;
}
}