@@ -0,0 +1,32 @@
+import java.util.Scanner;
+
+public class c1091 {
+
+	public static void main(String[] args) {
+		
+		Scanner sc =  new Scanner(System.in);
+		String[] nums = sc.nextLine().split(" ");
+		sc.close();
+		
+		long a = Integer.parseInt(nums[0]); //시작값
+		int m = Integer.parseInt(nums[1]); //곱할값
+		int d = Integer.parseInt(nums[2]); //더할값
+		int n = Integer.parseInt(nums[3]); //몇번째인지 나타내는 숫자		
+		
+		//int에 넘치므로 long으로
+		//-50 50 -50 10 => -99649234693877550
+		
+		for(int i=0; i<n-1; i++) {
+			a = (a*m+d);
+		}
+		System.out.println(a);
+		
+		
+		/* 연습
+		System.out.println(1*-2+1); //-1
+		System.out.println(-1*-2+1); //3
+		System.out.println(3*-2+1); //-5
+		System.out.println(-5*-2+1); //11
+		*/
+	}
+}