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- #include <iostream>
- #include <iomanip>
- long double fib(int n)
- {
- if (n <= 0) return 0;
- long double fib1 = 0;
- long double fib2 = 1;
- long double sum = 0;
- for(int i = 0; i < (n-1); i++)
- {
- sum = fib1 + fib2;
- fib1 = fib2;
- fib2 = sum;
- }
- return sum;
- }
- int main()
- {
- std::cout << std::setprecision(10000);
- int n = 100000;
- //char wynik[n/4]; //maksymalna ilość cyfr w n-tym wyrazie ciągu to n/4
- std::cout << fib(a);
- return 0;
- }
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