Logic for testinput is good!

Co-authored-by: sigonasr2 <sigonasr2@gmail.com>

List.h

@@ -5,5 +5,6 @@
 struct List{
     std::vector<Element>elements;
     List*parent;
+    int index=0;
     friend std::ostream&operator<<(std::ostream&out,List&rhs);
 };

main.cpp

@@ -3,16 +3,79 @@
 #include "olcutils.h"
 #include "List.h"
 
+bool examineList(List*list1,List*list2){
+    if (list1->index>=list1->elements.size()){
+        return true;
+    }
+    while (true) {
+        if (list1->elements.size()>list2->elements.size()){
+            return false;
+        }
+        if (list1->elements[list1->index].list!=nullptr){
+            if (list2->elements[list2->index].list==nullptr){
+                //List 1: List
+                //List 2: Number
+                List*prevPtr=list1;
+                while (list1->elements[list1->index].list!=nullptr){
+                    list1=list1->elements[list1->index].list;
+                }
+                //Now we should be at a number.
+                if (list1->elements[list1->index].number>list2->elements[list2->index].number){
+                    return false;
+                }
+                list1=prevPtr;
+            } else {
+                //List 1: List
+                //List 2: List
+                if (!examineList(list1->elements[list1->index].list,list2->elements[list2->index].list)){
+                    return false;
+                }
+            }
+            //It's a list.
+        } else {
+            //Compare number.
+            if (list2->elements[list2->index].list==nullptr){
+                //List 1: Number
+                //List 2: Number
+                if (list1->elements[list1->index].number>list2->elements[list2->index].number){
+                    return false;
+                }
+            } else {
+                //List 1: Number
+                //List 2: List
+                List*prevPtr=list2;
+                while (list2->elements[list2->index].list!=nullptr){
+                    list2=list2->elements[list2->index].list;
+                }
+                //Now we should be at a number.
+                if (list2->elements[list2->index].number<list1->elements[list1->index].number){
+                    return false;
+                }
+                list2=prevPtr;
+            }
+        }
+        list1->index++;
+        list2->index++;
+        if (list1->index>=list1->elements.size()||list2->index>=list2->elements.size()){
+            break;
+        }
+    }
+    return true;
+}
+
 using namespace olc;
 int main()
 {
-	std::ifstream file("input");
+	std::ifstream file("testinput");
+    int index=1;
     while (file.good()){
         std::string line;
-        std::getline(file,line);
-        List*startingList=new List();
-        List*currentList=nullptr;
-        if (line.length()>0){
+        List*list1;
+        List*list2;
+        for (int j=0;j<2;j++){
+            std::getline(file,line);
+            List*startingList=new List();
+            List*currentList=nullptr;
             for (int i=0;i<line.length();i++){
                 if (line[i]=='['){
                     //std::cout<<"Read "<<line[i]<<"...";
@@ -46,9 +109,24 @@ int main()
                     i--;
                 }
             }
-            std::cout<<line<<std::endl; 
-            std::cout<<*startingList<<std::endl; 
+            if (j==0){
+                list1=startingList;
+            } else {
+                list2=startingList;
+            }
+        }
+        std::getline(file,line);
+        std::cout<<"List 1: "<<*list1<<std::endl;
+        std::cout<<"List 2: "<<*list2<<std::endl;
+        int sum=0;
+        bool passed=examineList(list1,list2);
+        if (passed){
+            sum+=index;
+            std::cout<<"Passed! Sum:"<<sum<<std::endl;
+        } else {
+            std::cout<<"Failed"<<std::endl;
         }
+        index++;
     }
 
 	return 0;