diff --git a/laba01upd3.cpp b/laba01upd3.cpp
index 1a1ad02..4487bde 100644
--- a/laba01upd3.cpp
+++ b/laba01upd3.cpp
@@ -29,6 +29,17 @@ Input input_data() {
     return in;
 }
 
+void find_minmax(const vector<double>& numbers, double& min, double& max) {
+    min = numbers[0];
+    max = numbers[0];
+    for (double x : numbers) {
+        if (x < min)
+            min = x;
+        if (x > max)
+            max = x;
+    }
+}
+
 
 int main()
 {