diff --git a/src/main/java/ru/ulstu/is/cbapp/CbappApplication.java b/src/main/java/ru/ulstu/is/cbapp/CbappApplication.java
index 3347bff..ff81a6a 100644
--- a/src/main/java/ru/ulstu/is/cbapp/CbappApplication.java
+++ b/src/main/java/ru/ulstu/is/cbapp/CbappApplication.java
@@ -2,12 +2,32 @@ package ru.ulstu.is.cbapp;
 
 import org.springframework.boot.SpringApplication;
 import org.springframework.boot.autoconfigure.SpringBootApplication;
+import org.springframework.web.bind.annotation.GetMapping;
+import org.springframework.web.bind.annotation.RequestParam;
+import org.springframework.web.bind.annotation.RestController;
 
 @SpringBootApplication
+@RestController
 public class CbappApplication {
 
 	public static void main(String[] args) {
 		SpringApplication.run(CbappApplication.class, args);
 	}
 
+	@GetMapping("/calc")
+	public Integer doSum(@RequestParam(defaultValue = "10") int val1,
+						 @RequestParam(defaultValue = "2") int val2,
+						 @RequestParam(defaultValue = "+") String value) {
+		switch(value){
+			case "-":
+				return val1-val2;
+			case "*":
+				return val1*val2;
+			case "/":
+				return val1/val2;
+			default:
+				return val1+val2;
+		}
+	}
+
 }