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// Mine
class Solution {
public:
    int minCostClimbingStairs(vector<int>& C) {
        int n = C.size();
        int f[n];
        f[0] = C[0];
        f[1] = C[1];
        for (int i = 2; i < n; i++) {
            f[i] = min(f[i - 1], f[i - 2]) + C[i];
        }
        return min(f[n - 1], f[n - 2]);
    }
};