#include <iostream>
using namespace std;
int climbStairs(int n) {
// TODO: use dynamic programming (Fibonacci pattern)
return 0;
}
int main() {
cout << climbStairs(2) << endl; // 2
cout << climbStairs(3) << endl; // 3
cout << climbStairs(5) << endl; // 8
return 0;
}
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