diff --git a/du5/program.c b/du5/program.c
index be18faa..f6d729b 100644
--- a/du5/program.c
+++ b/du5/program.c
@@ -63,8 +63,7 @@ int del(struct LIS *list,int count){
     return count;
 }
 
-void Sort_Struct(struct LIS *list,int count){
-
+void Sort_Struct(struct LIS *list,int count){//bubble sort :)
     struct LIS ilusion;
     for(int i=0;i<count;i++){
         for(int j=count;j>i;j--){
@@ -73,6 +72,24 @@ void Sort_Struct(struct LIS *list,int count){
                list[i]=list[j];
                list[j]=ilusion;
             }
+            if(list[i].num==list[j].num){
+                for(int k=0;k<strlen(list[i].sname);k++){
+                    if(list[i].sname<list[j].sname){
+                        ilusion=list[i];
+                        list[i]=list[j];
+                        list[j]=ilusion;
+                    }  
+                }
+            }
+            if(list[i].num==list[j].num && list[i].sname==list[j].sname){
+                for(int l=0;l<strlen(list[i].fname);l++){
+                    if(list[i].fname<list[j].fname){
+                        ilusion=list[i];
+                        list[i]=list[j];
+                        list[j]=ilusion;
+                    }
+                }
+            }
         }
     }
 }