B - NIT Destroys the Universe

https://codeforces.com/contest/1696/submission/161746915

Codeforces/1696/B/B.cpp

@@ -0,0 +1,32 @@
+#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;
+}