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OI-codes/Codeforces/1696/B/B.cpp

33 lines
451 B
C++

#include <iostream>
using std::cin;
using std::cout;
const char endl = '\n';
const int N = 1e5 + 5;
int t, n, a[N];
int main() {
std::ios::sync_with_stdio(false);
cin.tie(nullptr);
cin >> t;
while (t--) {
int cnt = 0;
cin >> n;
for (int i = 1; i <= n; i++) {
cin >> a[i];
if (!a[i - 1] && a[i]) cnt++;
}
cout << std::min(2, cnt) << endl;
}
return 0;
}