WeCP Python Coding Question 7 : Momentum LinkedList

 

WeCP  Python Coding Question 7 : Momentum LinkedList

Problem Statement -: 

Ratul made a linked list, a list made of n nodes, where every node has two variables, the velocity and the mass of a particle.

Since all the particles have the velocity in the same direction, find the total momentum of the entity made by the particles from the linked list.

Constraints :

1<=n<=10000

1<=m,v<=100

 

Input format:

First line containing n, number of nodes

Then n lines containing the mass and the velocity space separated.

 

Output Format:

Single integer denoting the momentum

 

Sample Input:

4

1 3

2 4

2 3

4 5

 

Sample Output:

37

 

Program :

 

# WeCP Python Coding Question 7 : Momentum LinkedList

 

n=int(input())

s=0

for i in range(n):

    m,v=map(int,input().split())

    s+=(m*v)

print(s)

 

For Output Check the Video :