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*CodeChef recently revamped its practice page to make it easier for users to identify the next problems they should solve by introducing some new features:*

*Recent Contest Problems – contains only problems from the last 2 contests**Separate Un-Attempted, Attempted, and All tabs**Problem Difficulty Rating – the Recommended dropdown menu has various difficulty ranges so that you can attempt the problems most suited to your experience**Popular Topics and Tags*

Our Chef is currently practicing on CodeChef and is a beginner. The count of ‘All Problems’ in the Beginner section is X*X*. Our Chef has already ‘Attempted’ Y*Y* problems among them. How many problems are yet ‘Un-attempted’?

- The first and only line of input contains two space-separated integers X
*X*and Y*Y*— the count of ‘All problems’ in the Beginner’s section and the count of Chef’s ‘Attempted’ problems, respectively.

Output a single integer in a single line — the number of problems that are yet ‘Un-attempted’

- 1 \leq Y \leq X \leq 10001≤
*Y*≤*X*≤1000

**Subtask 1 (100 points):**- Original constraints.

```
Input: 10 4
Output: 6
```

```
Input: 10 10
Output: 0
```

```
Input: 1000 990
Output: 10
```

```
Input: 500 1
Output: 499
```

**Test case 1:** There are 1010 problems in total in the Beginner’s section, out of which 44 have been attempted. Hence, there are 66 Un-attempted problems.

**Test case 2:** There are 1010 problems in total in the Beginner’s section, out of which all have been attempted. Hence, there are 00 Un-attempted problems.

**Test case 3:** There are 10001000 problems in total in the Beginner’s section, out of which 990990 have been attempted. Hence, there are 1010 Un-attempted problems.

**Test case 4:** There are 500500 problems in total in the Beginner’s section, out of which only 11 has been attempted. Hence, there are 499499 Un-attempted problems.

```
import java.util.*;
import java.lang.*;
import java.io.*;
class Codechef
{
public static void main (String[] args) throws java.lang.Exception
{
Scanner sc = new Scanner(System.in);
int x = sc.nextInt();
int y = sc.nextInt();
System.out.println(x-y);
}
}
```

```
#include <iostream>
using namespace std;
int main() {
int x,y;
cin>>x>>y;
cout<<x-y<<endl;
return 0;
}
```

```
X, Y = map(int, input().split(" "))
print(X - Y)
```

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