Problem 5

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Problem

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?

Code

#include <iostream>
using namespace std;

int main()
{
    for (long long i = 2520; ; i+=20)
    {
        bool flag = true;
        for (long long j = 1; j <= 20; j++)
        {
            if (i%j != 0)
            {
                flag = false;
                break;
            }
        }
        if (flag)
        {
            cout << i << endl;
            break;
        }
    }
}