题解 | #Fibonacci#

#include <iostream>
#include <cstdio>

using namespace std;

int Fibonacci(int x) {
    if (x == 0) {
        return 0;
    } else if (x == 1) {
        return 1;
    } else {
        return Fibonacci(x - 1) + Fibonacci(x - 2);
    }
}

int main() {
    int n;
    while (scanf("%d", &n) != EOF) {
        printf("%d\n", Fibonacci(n));
    }
    return 0;
}