This is the first question of November-2016-long challenge.

Question link:-

Link to my code which gives 30 points:- https://www.codechef.com/viewsolution/21550890

Link to my code which gives 100 points: - https://www.codechef.com/viewsolution/21550940

In the first code, I wrote this to calculate lcm :

long long int lcm(long long int a,long long int b)

{

```
long long int z = (a*b)/gcd(a,b);
return z;
```

}

In the second code, I wrote this to calculate LCM :

long long int lcm(long long int a,long long int b)

{

```
return (a*b)/gcd(a,b);
```

}

why the Second one got AC and first one got WA for the last subtask?

Can anybody please explain?

@vijju

@admin