Why i am getting wrong answer?

#1

#include
using namespace std;
bool check(long long x,long long n,int k)
{
long long product=1;
for(int i=1;i<=k;i++)
{
product*=x;
if(product>n)
return false;
}
return true;
}
long long find_number(long long n,int k)
{
long long min=0;
long long max=n;
long long mid;
long long ans;
while(min<=max)
{
mid=(min+max)/2;
bool x=check(mid,n,k);
if(x)
{
ans=mid;
min=mid+1;
}
else
max=mid-1;
}
return ans;
}
int main()
{
int t,k;
long long n,ans;
cin>>t;
while(t–)
{
cin>>n>>k;
ans=find_number(n,k);
cout<<ans<<endl;
}
return 0;
}

#2

Just add base cases like when k=2 return sqrt(n) and if k is 1 return n.

#3

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