Create program.cpp

program.cpp

@@ -0,0 +1,30 @@
+#include<bits/stdc++.h>
+using namespace std;
+int getPairsCount(int arr[], int n, int num)
+{
+	int count = 0;
+	for (int i = 0; i < n; i++)
+		for (int j = i + 1; j < n; j++)
+			if ((arr[i] + arr[j]) % num == 0)
+				count++;
+	return count;
+}
+int main() {
+	int T;
+	cin>>T;
+	while(T>0){
+    int size;
+    cin>>size;
+    int arr[size];
+    for(int i=0; i<size; i++){
+        cin>>arr[i];
+    }
+	int num = 4;
+	cout<<getPairsCount(arr, size, num);
+	    if(T!=1){
+	       cout<<"\n";
+	    }
+	    T--;
+	}
+	return 0;
+}