1328A

Author: anasjawed283

Divisiblity_problem.cpp

@@ -0,0 +1,20 @@
+#include <iostream>
+using namespace std;
+int main() {
+int test;
+cin>>test;
+while(test--){
+	
+	int a,b;
+	cin>>a>>b;
+	if(a%b==0) 
+	{
+    cout<<0<<endl;
+	}
+	else {
+	int k=a%b;
+	cout<<b-k<<endl;
+	}
+}
+	return 0;
+}