A - Closing The Gap

https://codeforces.com/contest/1615/submission/140454599

CodeForces/1615/A/A.cpp

@@ -0,0 +1,21 @@
+#include <iostream>
+
+using std::cin;
+using std::cout;
+using std::endl;
+
+int t, n, x, s;
+
+int main() {
+    cin >> t;
+    while (t--) {
+        s = 0;
+        cin >> n;
+        for (int i = 0; i < n; i++) {
+            cin >> x;
+            s += x;
+        }
+        cout << !!(s % n) << endl;
+    }
+    return 0;
+}