Monday, 13 February 2017

Geeksforgeeks Solution For " Number Of Open Doors "

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Problem :- Consider a long alley with a N number of doors on one side. All the doors are closed initially. You move to and fro in the alley changing the states of the doors as follows: you open a door that is already closed and you close a door that is already opened. You start at one end go on altering the state of the doors till you reach the other end and then you come back and start altering the states of the doors again.

In the first go, you alter the states of doors numbered 1, 2, 3, … , n.

In the second go, you alter the states of doors numbered 2, 4, 6 …

In the third go, you alter the states of doors numbered 3, 6, 9 …

You continue this till the Nth go in which you alter the state of the door numbered N.

You have to find the number of open doors at the end of the procedure.

Submit Your Solution :- Click Here 


Solution :-

#include <iostream>
#include <math.h>
using namespace std;
int main()
{
    int t;
    cin>>t;
    while(t--)
    {
       int temp;
       unsigned long long int n;
       cin>>n;
       temp=floor(sqrt(n));
       cout<<temp<<endl;
    }
    return 0;
}



Output:-

Geeksforgeeks Solution For " Number Of Open Doors "

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Ghanendra Yadav

Ghanendra Yadav

Hello, I Am Ghanendra Yadav Owner of This Blog, I am professional Blogger and Programmer. I Love Programming, Logo Making, And Banner Designing. My Highest Qualification is MCA From NIT Warangal. You Can Find Me On Social Media Through Below Link And If You Have Any Query Related To Programming And Other Subject Comment Below or You Can Mail Me I Will Try To Answer Within 24 Hours Email:- yghanendra@student.nitw.ac.in

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2 comments:

  1. hi yadav sir
    thanks for this informative and awesome article .its helped in real way.

    ReplyDelete