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- package com.company;
- import java.io.BufferedReader;
- import java.io.IOException;
- import java.io.InputStreamReader;
- import java.util.*;
- public class Main {
- private static long[] memory;//тук си пазим вече преизчислените ст-ти
- public static void main(String[] args) throws IOException {
- // Scanner scanner = new Scanner(System.in);
- var reader = new BufferedReader(new InputStreamReader(System.in));
- int n = Integer.parseInt(reader.readLine());
- memory = new long[n + 1];
- long result = getFibonacci(n); //тук си разписваме метод, по който получаваме резултата
- System.out.println(result);
- }
- private static long getFibonacci(int n) {
- if (n < 2) {
- return 1;
- }
- if (memory[n] != 0) {
- return memory[n];
- }
- return memory[n] = getFibonacci(n - 1) + getFibonacci(n - 2);
- }
- }
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