Codechef Problems: Notebook Counting (NOTECNT)

 Problem Statement: 

https://www.codechef.com/problems/NOTECNT

Solution: 

Given, 

    A : number of notebooks chef has 

    B : number of pages in each notebook 

    50: number of lines on each page 

    2: sides of page 

to find: total number of lines chef can write 

number of books chef has = A 

number of pages chef has = number of books * number of pages in each book 

                                          = A * B 

number of lines chef has   = number of pages * number of lines in a page * number of sides of page

                                          = A * B * 50 * 2 

therefore, the final answer will be: 

total number of lines = A * B * 50 * 2 

Code Solution: 

#include <bits/stdc++.h>

using namespace std;

int main() {

    int a, b;

    cin >> a >> b;

    cout << a * b * 50 * 2 << endl;

    return 0;

}