/*
_______________________
#Data Types:
-----------------------

1. int - integer number
2. float - decimal point number
3. double - "
4. char - character
5. long long int - > integer number, size 10^9 - 10^12
__________________________________________________________________
ASCII - (0-255) American Standard Code for Information Interchange
To check press: Alt + <number>
------------------------------------------------------------------
____________
***Syntax-
------------
_____________________
#Variable Declaration
---------------------

<data type> <name of the variable>;
_______________
#Variable Size:
---------------

---------------------------------------
Data type     |   Size   | Max value  |
---------------------------------------
int           | 4byte    |            |
char          | 1byte    |            |
float         | 4byte    | 10^38      |
double        | 8byte    | 10^308     |
long long int | 8byte    |            |
---------------------------------------
_______
Topics:
-------

1. Data type
2. Type casting
3. Format specifiers
4. Assignment operator
    (a)operators-
       i.   + (plus)
       ii.  - (minus)
       iii. * (multiplication)
       iv.  / (division)
       v.   % (modulus)
       vi.  ++ (increment)
       vii. -- (decrement)
5. Header
6. Main function
7. return function
8. Rules of variable declaration
--1. any name except c key words.
--2. a to z, A-Z, aa, Az, a1, a2, a_, character_
9. User input
--Blank space don't count when inputting values
10. Pointers(Why &<variable> is used?)
*/


#include<stdio.h>///header
int main()///body

{
    int a, b;
    scanf("%d %d", &a, &b);
    int c = a % b;
    printf("%d", c);
    return 0;
}