#include <bits/stdc++.h>
using namespace std;
int gcd(int x,int y)
{
   int rem1=fmax(x,y);
   int rem2=fmin(x,y);
   
   while(rem2!=0)
   {
     int temp=rem1%rem2;
     rem1=rem2;
     rem2=temp;
     
   }
   return rem1;
}
int main() {
	// your code goes here4
	int test;
	cin>>test;
	while(test--)
	{
	    int x,y;
	    cin>>x>>y;
	    if(x==1 && y==1)
	   cout<<"2"<<endl;
	   else
	   {
	      if(x==1 || y==1)
	      {
	        if(x==1)
	        {
	          if(y%2==0)
	          cout<<"1"<<endl;
	          else
	          cout<<"2"<<endl;
	        }
	        else
	        {
	          if(x%2==0)
	          cout<<"1"<<endl;
	          else
	          cout<<"2"<<endl;
	        }
	      }
	      else
	      {
	         int temp2=gcd(x,y);
	         if(temp2!=1)
	         cout<<"0"<<endl;
	         
	         else
	         {
	            if(x%2==1 && y%2==1)
	            cout<<"2"<<endl;
	            else
	            {
	              if(x%2==1 || y%2==1)
	              {
	                cout<<"1"<<endl;
	              }
	            }
	         }
	      }
	      
	   }
	}
	return 0;
}
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C++ Online Compiler

Write, Run & Share C++ code online using OneCompiler's C++ online compiler for free. It's one of the robust, feature-rich online compilers for C++ language, running on the latest version 17. Getting started with the OneCompiler's C++ compiler is simple and pretty fast. The editor shows sample boilerplate code when you choose language as C++ and start coding!

Read inputs from stdin

OneCompiler's C++ online compiler supports stdin and users can give inputs to programs using the STDIN textbox under the I/O tab. Following is a sample program which takes name as input and print your name with hello.

#include <iostream>
#include <string>
using namespace std;

int main() 
{
    string name;
    cout << "Enter name:";
    getline (cin, name);
    cout << "Hello " << name;
    return 0;
}

About C++

C++ is a widely used middle-level programming language.

  • Supports different platforms like Windows, various Linux flavours, MacOS etc
  • C++ supports OOPS concepts like Inheritance, Polymorphism, Encapsulation and Abstraction.
  • Case-sensitive
  • C++ is a compiler based language
  • C++ supports structured programming language
  • C++ provides alot of inbuilt functions and also supports dynamic memory allocation.
  • Like C, C++ also allows you to play with memory using Pointers.

Syntax help

Loops

1. If-Else:

When ever you want to perform a set of operations based on a condition If-Else is used.

if(conditional-expression) {
   //code
}
else {
   //code
}

You can also use if-else for nested Ifs and If-Else-If ladder when multiple conditions are to be performed on a single variable.

2. Switch:

Switch is an alternative to If-Else-If ladder.

switch(conditional-expression){    
case value1:    
 // code    
 break;  // optional  
case value2:    
 // code    
 break;  // optional  
......    
    
default:     
 code to be executed when all the above cases are not matched;    
}

3. For:

For loop is used to iterate a set of statements based on a condition.

for(Initialization; Condition; Increment/decrement){  
  //code  
}

4. While:

While is also used to iterate a set of statements based on a condition. Usually while is preferred when number of iterations are not known in advance.

while (condition) {  
// code 
}

5. Do-While:

Do-while is also used to iterate a set of statements based on a condition. It is mostly used when you need to execute the statements atleast once.

do {  
 // code 
} while (condition);

Functions

Function is a sub-routine which contains set of statements. Usually functions are written when multiple calls are required to same set of statements which increases re-usuability and modularity. Function gets run only when it is called.

How to declare a Function:

return_type function_name(parameters);

How to call a Function:

function_name (parameters)

How to define a Function:

return_type function_name(parameters) {  
 // code
}