Where is Vasya?

Where is Vasya?

Vasya stands in line with number of people p (including Vasya) , but he doesn ' t know exactly which position he occupies. He can say that there is no less than b people standing in front of him and people standing behind him no more than a . Find the number of different positions Vasya can occupy.

Input

As an input you have 3 numbers:

1. Total amount of people in the line;

2. Number of people standing in front of him

3. Number of people standing behind him

Examples

Line.whereishe (3, 1, 1)//= 2 The possible positions Are:2 and 3
Line.whereishe (5, 2, 3)//= 3 The possible positions Are:3, 4 and 5

The third parameter are not irrelavant and are the reason why (9,4,3) are 4 not 5
You have to satisfy both conditions
no less than bef people in front of him
and
no more than aft people behind him

As far as I can tell all the test cases is correct

9 people, not less than 4 people in front, not more than 3 people behind, can occupy 6,7,8,9 is a position

The fifth position, although the front is 4 people, but the back is also 4 people. After the number of people over 3, it does not fit.

usingSystem; Public classLine { Public Static intWhereishe (intPintBEF,intaft) {            //Your code is here ...           intCount=0; intA=0;//people infront of him           intb=0;//people behind him           for(intI=1; i<=p;i++) {a=i-1; b=p-i; if(a>=bef&&b<=aft) {Count++; }          }          returncount; }    }

After using LINQ for simplification:

using System; using System.Linq;  Public Static int Whereishe (intintint , aft)    {return enumerable.range (1  1 >= bef && p-x <= aft). Count ();}

Other people's Solution

using System;  Public class Line    {        publicstaticint whereishe (intint bef,int aft)        {            return math.min (p-bef,aft+1);        }    }

Where is Vasya?