diff --git a/src/main/java/com/company/ServiceImpl.java b/src/main/java/com/company/ServiceImpl.java
index 3b37c5c..e5c600e 100644
--- a/src/main/java/com/company/ServiceImpl.java
+++ b/src/main/java/com/company/ServiceImpl.java
@@ -2,18 +2,26 @@
 
 public class ServiceImpl implements Service {
     public int firstMethod(int a, int b) {
-        return 0;
+        int result = a;
+        for (int i = 0; i < b; i++) {
+            a++;
+        }
+        return a;
     }
 
     public int secondMethod(int a, int b) {
-        return 0;
+        int result = a;
+        for (int i = 0; i < b; i++) {
+            a--;
+        }
+        return a;
     }
 
     public int thirdMethod(int a, int b) {
-        return 0;
+        return (int) Math.pow(a, b);
     }
 
     public int fourthMethod(int a, int b) {
-        return 0;
+        return a / b;
     }
 }
diff --git a/variant.txt b/variant.txt
index e69de29..56a6051 100644
--- a/variant.txt
+++ b/variant.txt
@@ -0,0 +1 @@
+1
\ No newline at end of file