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- #include <iostream>
- #include <cmath>
- int main()
- {
- int n;
- unsigned long long int base, power;
- std::cin >> n;
- for (int i = 0; i < n; i++)
- {
- int result;
- std::cin >> base >> power;
- //Potrzebna nam jest tylko ostatnia liczba podstawy
- base %= 10;
- if (power > 0)
- {
- power %= 4;
- if (power == 0) power = 4;
- result = pow(base, power);
- }
- else
- {
- result = 1;
- }
- std::cout << result % 10 << std::endl;
- }
- return 0;
- }
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