Create abc.cpp

abc.cpp

@@ -0,0 +1,27 @@
+#include <iostream>
+using namespace std;
+
+int main() {
+	// your code goes here
+	int t;
+	cin>>t;
+
+	while(t--){
+	    int n,k,x,y;
+	    cin>>n>>k>>x>>y;
+	    int flag=0;
+
+	    for(int i=0;i<n;i++){
+	        int inf=k*i+x;
+	        if(inf>n){
+	            inf=inf%n;
+	        }
+	        if(y==inf){
+	            flag=1;
+	            break;
+	        }
+	    }
+
+	    if(flag) cout<<"YES\n";
+	    else cout<<"NO\n";
+	}