fixed crash

2/puzzle2p2.cpp

@@ -19,6 +19,7 @@ int main(){
     string line;
     int safeReports = 0;
     stringstream wholeDoc;
+    int linesReadFromFile= 0;
 
     ifstream puzzle("input.txt", ifstream::in);
 
@@ -30,6 +31,7 @@ int main(){
                 int number = stoi(numberString);
                 currentLevels.push_back(number);
             }
+            linesReadFromFile++;
 
             list<int> currentLevelsBackup = currentLevels;
             int numOfLevelsProcessed = 0;
@@ -91,6 +93,12 @@ int main(){
                 listDirty = true;
             }
 
+            if(listDirty&&dir==DOWN&&levelGoesUp.size()>0){
+                currentLevels.clear();
+            } else if(listDirty&&dir==UP&&levelGoDown.size()>0){
+                currentLevels.clear();
+            }
+
             if (!currentLevels.empty()){
                 if (dir==UP&&levelGoDown.size()==1){
                     list<int>::iterator itNumberToDelete = currentLevels.begin();
@@ -125,6 +133,7 @@ int main(){
 
             }
         }
-cout << safeReports;
+cout <<"lines read in: " << linesReadFromFile<<"\n";
+cout <<"safe Reports: " << safeReports;
 puzzle.close();
 }