#include <cmath>
#include <iostream>

int main()
{
    unsigned long long a = 1000ULL ;
    unsigned long long b = 10ULL ;
    auto res = std::pow( a, b ) ;
    std::cout << std::fixed << res << '\n' ;

    a = 10000000000ULL ;
    b = 100000ULL ;
    res = std::pow( a, b ) ;
    if( res != HUGE_VAL ) std::cout << std::fixed << res << '\n' ;
    else std::cout << "overflow\n" ;
}