ABC081B - Shift only

問題：B - Shift only

#include <algorithm>
#include <iostream>
using namespace std;

#define REP(i, n) for (int i = 0; i < (n); ++i)

int main(void) {
    const int INF = 1e9;
    int n, a, ans = INF;

    cin.tie(0);
    ios::sync_with_stdio(false);
    cin >> n;
    REP(i, n) {
        int cnt = 0;
        cin >> a;
        while (a % 2 == 0) {
            cnt++;
            a /= 2;
        }

        ans = min(ans, cnt);
    }

    cout << ans << "\n";
    return 0;
}