Hi Codeforces,
For a particular problem , i used first the predefined pow() function and then my own version of pow() function , named power().
Code :
#include<bits/stdc++.h>
using namespace std;
#define ull unsigned long long
ull power(ull a,ull n)
{
ull res=1;
while(n>=1)
{
if(n&1) res*=a;
n>>=1;
a*=a;
}
return res;
}
int main()
{
ull a=3,b=35;
cout<<(ull)pow(a,b)-1<<" ";
cout<<power(a,b)-1<<endl;
return 0;
}
But , two of them give different outputs for same input.
The output on codeblocks is :
50031545098999705 50031545098999706
What can be reason for the same?