diff --git a/Lab1/White.cs b/Lab1/White.cs
index 29fe881b..798863a8 100644
--- a/Lab1/White.cs
+++ b/Lab1/White.cs
@@ -7,7 +7,10 @@ public bool Task1(double d)
             bool answer = false;
 
             // code here
-
+            if (d > 0)
+            {
+                answer = true;
+            }
             // end
 
             return answer;
@@ -17,7 +20,10 @@ public bool Task2(int n)
             bool answer = false;
 
             // code here
-
+            if (n % 2 == 0)
+            {
+                answer = true;
+            }
             // end
 
             return answer;
@@ -27,17 +33,33 @@ public int Task3(int a, int b)
             int answer = 0;
 
             // code here
-
+            if (a > b)
+            {
+                answer = a;
+            }
+            else
+            {
+                answer = b;
+            }
             // end
 
             return answer;
         }
         public double Task4(double d, double f)
         {
+            
             double answer = 0;
 
             // code here
 
+            if (Math.Abs(d) > Math.Abs(f))
+            {
+                answer = f;
+            }
+            else
+            {
+                answer = d;
+            }
             // end
 
             return answer;
@@ -47,7 +69,14 @@ public double Task5(double x)
             double answer = 0;
 
             // code here
-
+            if (Math.Abs(x) > 1)
+            {
+                answer = 1;
+            }
+            else
+            {
+                answer = x;
+            }
             // end
 
             return answer;
@@ -57,6 +86,11 @@ public bool Task6(double x, double y, double r)
             bool answer = false;
 
             // code here
+            double difference = Math.Abs(x * x + y * y - r * r);
+            if (difference <= 0.0001)
+            {
+                answer = true;
+            }
 
             // end
 
@@ -68,7 +102,24 @@ public bool Task7(int n)
             bool answer = false;
 
             // code here
-
+            { 
+               
+
+            // 1. 计算 s = n^2
+                int s = n * n;
+
+                // 2. 第一个判断框: s - n > 2*n
+                if (s - n > 2 * n)
+                {
+                    // 3. 第二个判断框: n 是否为偶数
+                    if (n % 2 == 0)
+                    {
+                        answer = true;
+                    }
+                }
+
+                return answer;
+            }
             // end
 
             return answer;
@@ -78,10 +129,25 @@ public bool Task8(double L, int T, int M)
             bool answer = false;
 
             // code here
+            // 条件1: 速度10海里/小时，时间不超过3小时 (L/10 <= 3)
+            bool isTimeValid = (L / 10.0) <= 3;
 
-            // end
+            // 条件2: 标志物(树+山)总数不少于5
+            bool areLandmarksEnough = (T + M) >= 5;
+
+            // 条件3: 山的数量必须是偶数
+            bool isMountainsEven = (M % 2 == 0);
+
+            // 必须同时满足所有条件
+            if (isTimeValid && areLandmarksEnough && isMountainsEven)
+            {
+                answer = true;
+            }
 
             return answer;
+        }
+            // end
+
+            
         }
     }
-}
\ No newline at end of file