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2 years ago

271 B

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#include <cmath>
#include <iostream>
#include <string>
#include <fstream>
#include <iomanip>
using namespace std;
int fibonachi(int a)
{
	if (a > 0) return fibonachi(a - 1) + fibonachi(a - 2);
}
int main()
{
	int a;
	cin >> a;
	cout <<  fibonachi(a);

}