Problem:
Score : 300 points

Problem Statement

Takahashi is organizing a party.

At the party, each guest will receive one or more snack pieces.

Takahashi predicts that the number of guests at this party will be A or B.

Find the minimum number of pieces that can be evenly distributed to the guests in both of the cases predicted.

We assume that a piece cannot be divided and distributed to multiple guests.

Constraints

1 \leq A, B \leq 10^5

A \neq B

All values in input are integers.

Input

Input is given from Standard Input in the following format:

A B

Output

Print the minimum number of pieces that can be evenly distributed to the guests in both of the cases with A guests and B guests.

Sample Input 1

2 3

Sample Output 1

6

When we have six snack pieces, each guest can take three pieces if we have two guests, and each guest can take two if we have three guests.

Sample Input 2

123 456

Sample Output 2

18696

Sample Input 3

100000 99999

Sample Output 3

9999900000

Solution in C (GCC 5.4.1) (judge verdict: Wrong Answer)

#include<stdio.h>
long long int lcm(int a, int b);
int main(void){
  int a,b;
  scanf("%d %d", &a, &b);
  printf("%I64d", lcm(a, b));
  return 0;
}

long long int lcm(int a, int b){
  int tmp,r;
  long long int x;
  x = (long long int)a * b;

  //入れ替え
  if(a<b){
    tmp = a;
    a = b;
    b = tmp;
  }

  r=a%b;
  while(r!=0){
    a = b;
    b = r;
    r = a % b;
  }
  return (long long int)x / b;
}