# Minimum value to be added to X such that it is at least Y percent of N

Given three integers **N**, **X** and **Y**, the task is to find the minimum integer that should be added to **X** to make it at least **Y** percent of **N**.

**Examples:**

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Input:N = 10, X = 2, Y = 40Output:2

Adding 2 to X gives 4 which is 40% of 10

Input:N = 10, X = 2, Y = 20Output:0

X is already 20% of 10

**Approach:** Find **val = (N * Y) / 100 **which is the **Y** percent of **N**. Now in order for **X** to be equal to **val**, **val – X** must be added to **X** only if **X < val**.

Below is the implementation of the above approach:

## C++

`// C++ implementation of the approach` `#include <bits/stdc++.h>` `using` `namespace` `std;` `// Function to return the required value` `// that must be added to x so that` `// it is at least y percent of n` `int` `minValue(` `int` `n, ` `int` `x, ` `int` `y)` `{` ` ` `// Required value` ` ` `float` `val = (y * n) / 100;` ` ` `// If x is already >= y percent of n` ` ` `if` `(x >= val)` ` ` `return` `0;` ` ` `else` ` ` `return` `(` `ceil` `(val) - x);` `}` `// Driver code` `int` `main()` `{` ` ` `int` `n = 10, x = 2, y = 40;` ` ` `cout << minValue(n, x, y);` `}` |

## Java

`// Java implementation of the approach` `import` `java.lang.Math;` `class` `GFG` `{` ` ` `// Function to return the required value` `// that must be added to x so that` `// it is at least y percent of n` `static` `int` `minValue(` `int` `n, ` `int` `x, ` `int` `y)` `{` ` ` `// Required value` ` ` `float` `val = (y * n) / ` `100` `;` ` ` `// If x is already >= y percent of n` ` ` `if` `(x >= val)` ` ` `return` `0` `;` ` ` `else` ` ` `return` `(` `int` `)(Math.ceil(val)-x);` `}` `// Driver code` `public` `static` `void` `main(String[] args)` `{` ` ` `int` `n = ` `10` `, x = ` `2` `, y = ` `40` `;` ` ` `System.out.println(minValue(n, x, y));` `}` `}` `// This code is contributed by Code_Mech.` |

## Python3

`import` `math` `# Function to return the required value` `# that must be added to x so that` `# it is at least y percent of n` `def` `minValue(n, x, y):` ` ` `# Required value` ` ` `val ` `=` `(y ` `*` `n)` `/` `100` ` ` `# If x is already >= y percent of n` ` ` `if` `x >` `=` `val:` ` ` `return` `0` ` ` `else` `:` ` ` `return` `math.ceil(val) ` `-` `x` `# Driver code` `n ` `=` `10` `; x ` `=` `2` `; y ` `=` `40` `print` `(minValue(n, x, y))` `# This code is contributed by Shrikant13` |

## C#

`// C# implementation of the approach` `using` `System;` `class` `GFG` `{` ` ` ` ` `// Function to return the required value` ` ` `// that must be added to x so that` ` ` `// it is at least y percent of n` ` ` `static` `int` `minValue(` `int` `n, ` `int` `x, ` `int` `y)` ` ` `{` ` ` ` ` `// Required value` ` ` `float` `val = (y * n) / 100;` ` ` ` ` `// If x is already >= y percent of n` ` ` `if` `(x >= val)` ` ` `return` `0;` ` ` `else` ` ` `return` `(` `int` `)(Math.Ceiling(val)-x) ;` ` ` `}` ` ` ` ` `// Driver code` ` ` `public` `static` `void` `Main()` ` ` `{` ` ` `int` `n = 10, x = 2, y = 40;` ` ` `Console.WriteLine((` `int` `)minValue(n, x, y));` ` ` `}` `}` `// This code is contributed by Ryuga.` |

## PHP

`<?php` `// php implementation of the approach` `// Function to return the required value` `// that must be added to x so that` `// it is at least y percent of n` `function` `minValue(` `$n` `, ` `$x` `, ` `$y` `)` `{` ` ` `// Required value` ` ` `$val` `= (` `$y` `* ` `$n` `) / 100;` ` ` `// If x is already >= y percent of n` ` ` `if` `(` `$x` `>= ` `$val` `)` ` ` `return` `0;` ` ` `else` ` ` `return` `(` `ceil` `(` `$val` `) - ` `$x` `);` `}` `// Driver code` `{` ` ` `$n` `= 10; ` `$x` `= 2; ` `$y` `= 40;` ` ` `echo` `(minValue(` `$n` `, ` `$x` `, ` `$y` `));` `}` `// This code is contributed by Code_Mech.` |

## Javascript

`<script>` `// Javascript implementation of the approach` `// Function to return the required value` `// that must be added to x so that` `// it is at least y percent of n` `function` `minValue(n, x, y)` `{` ` ` `// Required value` ` ` `let val = (y * n) / 100;` ` ` `// If x is already >= y percent of n` ` ` `if` `(x >= val)` ` ` `return` `0;` ` ` `else` ` ` `return` `(Math.ceil(val) - x);` `}` `// Driver code` `let n = 10, x = 2, y = 40;` `document.write(minValue(n, x, y));` `// This code is contributed by souravmahato348` `</script>` |

**Output:**

2

**Time Complexity:** O(1)