Viral Advertising

                            Solution in C :

python 3  :

people = 5
total = 0
n = int(input())

for i in range(n):
	receive = int(people/2)
	total+=receive
	people = receive*3
print(total)










Java  :

import java.io.*;
import java.util.*;

public class Solution {

    public static final int INITIAL_AMOUNT_OF_PEOPLE = 5;

    public static void main(String[] args) {
        try (Scanner scanner = new Scanner(System.in)) {
            int n = scanner.nextInt();
            int currentAmount = INITIAL_AMOUNT_OF_PEOPLE;
            int totalNumber = 0;
            for (int i = 0; i < n; i++) {
                currentAmount = currentAmount/2;
                totalNumber += currentAmount;
                currentAmount *= 3;
            }
            System.out.println(totalNumber);
        }
    }
}












C++  :

#include <cmath>
#include <cstdio>
#include <vector>
#include <iostream>
#include <algorithm>
using namespace std;



int main() {
    /* Enter your code here. Read input from STDIN. Print output to STDOUT */   
    int n;
    cin>>n;
    
    int m = 5;
    int total;
    for(int i=0; i<n; ++i){
        m = m/2;
        total += m;
        m *= 3;
    }
    
    cout<<total<<endl;
    return 0;
}










C  :

#include <stdio.h>
#include <string.h>
#include <math.h>
#include <stdlib.h>

int main() {
int i=0,j,k,l,m,n,t;
    scanf("%d",&n);
    k=5;
    for(i=0;i<n;i++)
        {
        j=k/2;
        k=j*3;
        m=m+j;
    }
    printf("%d",m);
    /* Enter your code here. Read input from STDIN. Print output to STDOUT */    
    return 0;
}