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I'm completely new to programming... I tried the first problem, but I'm still getting WA (I tried it some 20 times now...)

Can someone help me?

Here is my code:

#include <stdio.h>

int main (void)
{
unsigned int num1, num2, i, j, cycle_length, max_cycle;
scanf ("%ld %ld", & num1, & num2);
max ...