/*

2520 is the smallest number that can be divided by each of the numbers from 1 to 10 without any remainder.

What is the smallest positive number that is evenly divisible by all of the numbers from 1 to 20?

*/

class Problem_5 {

public static int LCM(int n1, int n2) {

int lcm = 0;

for (int i = 1; i < n2; i++) {

lcm = (n1 > i) ? n1 : i;

for (lcm = (n1 > i) ? n1 : i; lcm <= (n1*n2); lcm++) {

if(lcm % n1 == 0 && lcm % i == 0){

n1 = lcm;

break;

}

lcm += 1;

}

}

return lcm;

}

public static void main(String[] args) {

System.out.println(LCM(1, 20));

}

}