diff --git a/feladat3/UnitTest1/dataset/testin10000.dat.srt b/feladat3/UnitTest1/dataset/testin10000.dat.srt
index 7d01a70..23c050e 100644
Binary files a/feladat3/UnitTest1/dataset/testin10000.dat.srt and b/feladat3/UnitTest1/dataset/testin10000.dat.srt differ
diff --git a/feladat3/feladat3/datasets.txt b/feladat3/feladat3/datasets.txt
index 05bd48a..04f5636 100644
--- a/feladat3/feladat3/datasets.txt
+++ b/feladat3/feladat3/datasets.txt
@@ -1,5 +1,7 @@
-C:\Users\danit\Desktop\2026-27-cpp-homework\feladat3\UnitTest1\dataset\testin5.dat
-C:\Users\danit\Desktop\2026-27-cpp-homework\feladat3\UnitTest1\dataset\testin10.dat
-C:\Users\danit\Desktop\2026-27-cpp-homework\feladat3\UnitTest1\dataset\testin50.dat
-C:\Users\danit\Desktop\2026-27-cpp-homework\feladat3\UnitTest1\dataset\testin100.dat
-C:\Users\danit\Desktop\2026-27-cpp-homework\feladat3\UnitTest1\dataset\testin10000.dat
\ No newline at end of file
+
+
+
+
+C:\Users\danit\Desktop\2026-27-cpp-homework\feladat3\UnitTest1\dataset\testin10000.dat
+
+C:\Users\danit\Desktop\2026-27-cpp-homework\feladat3\UnitTest1\dataset\testin5.dat
\ No newline at end of file
diff --git a/feladat3/feladat3/feladat3.cpp b/feladat3/feladat3/feladat3.cpp
index e7b5b8b..b837e5c 100644
--- a/feladat3/feladat3/feladat3.cpp
+++ b/feladat3/feladat3/feladat3.cpp
@@ -99,9 +99,7 @@ int SortFile(char* infn, char* outfn, unsigned char* buf,
 	{
 		return NOK;
 	}
-	unsigned short files[16][MYBUFSIZE/2]; //this is probably a terrible solution. too bad!
-	int filesizes[16] = { 0 };
-	int ptrshifts[16] = { 0 };
+	char filenames[16][30];
 
 	*pmin = MYMAXVALUE;
 	*pmax = 0;
@@ -118,6 +116,7 @@ int SortFile(char* infn, char* outfn, unsigned char* buf,
 	int i = 0;
 	int j = 0;
 	int usedfilescnt = 0;
+	char filename[15];
 	while (readifs.read((char*)&n, sizeof(n))) {
 		if (*pmax < n) {
 			*pmax = n;
@@ -136,26 +135,34 @@ int SortFile(char* infn, char* outfn, unsigned char* buf,
 		if (i % (MYBUFSIZE / 2) == 0)
 		{
 			BubbleSort(buf, MYBUFSIZE);
+			sprintf_s(filename, "filename%d.dat", usedfilescnt);
+			CopyStr(filenames[usedfilescnt], filename);
+			ofstream tempoutofs(filename, ios_base::binary);
 			while (j < MYBUFSIZE/2)
 			{
-				files[usedfilescnt][j] = buf[j * 2] + buf[(j * 2) + 1] * 256;
-				j++;
+				unsigned short insert = buf[j * 2] + buf[(j * 2) + 1] * 256;
+				tempoutofs.write((char*)&insert, sizeof(insert));
+				j+=2;
 			}
-			filesizes[usedfilescnt] = MYBUFSIZE / 2;
+			tempoutofs.close();
 			usedfilescnt++;
-			j = 0;
+			j=0;
 		}
 	}
 	readifs.close();
 
 	int size = (*pn * 2) % MYBUFSIZE;
 	BubbleSort(buf, size);
+	sprintf_s(filename, "filename%d.dat", usedfilescnt);
+	CopyStr(filenames[usedfilescnt], filename);
+	ofstream tempoutofs(filename, ios_base::binary);
 	while (j < size / 2)
 	{
-		files[usedfilescnt][j] = buf[j * 2] + buf[(j * 2) + 1] * 256;
+		unsigned short insert = buf[j * 2] + buf[(j * 2) + 1] * 256;
+		tempoutofs.write((char*)&insert, sizeof(insert));
 		j++;
 	}
-	filesizes[usedfilescnt] = size/2;
+	tempoutofs.close();
 	usedfilescnt++;
 
 	if (test)
@@ -164,20 +171,31 @@ int SortFile(char* infn, char* outfn, unsigned char* buf,
 	}
 
 	i = 0;
+	ifstream* streams = new ifstream[16];
+	for (j = 0; j < usedfilescnt*2; j+=2)
+	{
+		streams[j].open(filenames[j / 2], ios_base::binary);
+		unsigned short num;
+		streams[j].read((char*)&num, sizeof(num));
+		buf[j] = num;
+		buf[j+1] = num >> 8;
+	}
+	bool doneFile[16] = {false};
 	while (i < *pn)
 	{
 		int savedJ = 0;
 		unsigned short smallest = MYMAXVALUE;
-		for (j = 0; j < usedfilescnt; j++)
+		for (size_t j = 0; j < usedfilescnt*2; j+=2)
 		{
-			if (ptrshifts[j] >= filesizes[j])
+			if (doneFile[j])
 			{
 				continue;
 			}
-			if (files[j][ptrshifts[j]] < smallest)
+			int currentnum = buf[j] + buf[j + 1] * 256;
+			if (currentnum < smallest)
 			{
-				smallest = files[j][ptrshifts[j]];
-				savedJ = j;
+				smallest = currentnum;
+				savedJ = j/2;
 			}
 		}
 		if (test)
@@ -185,7 +203,15 @@ int SortFile(char* infn, char* outfn, unsigned char* buf,
 			cout << i << ".\t" << smallest << "\n";
 		}
 		outofs.write((char *)&smallest, sizeof(smallest));
-		ptrshifts[savedJ]++;
+		ifstream tempinifs(filenames[savedJ], ios_base::binary);
+		unsigned short num;
+		if (streams[savedJ].read((char*)&num, sizeof(num)))
+		{
+			doneFile[savedJ] = true;
+		}
+		buf[savedJ] = num;
+		buf[savedJ + 1] = num >> 8;
+		int debugnum = buf[savedJ] + buf[savedJ] * 256;
 		i++;
 	}
 
diff --git a/feladat3/feladat3/filename0.dat b/feladat3/feladat3/filename0.dat
new file mode 100644
index 0000000..730c646
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diff --git a/feladat3/feladat3/filename1.dat b/feladat3/feladat3/filename1.dat
new file mode 100644
index 0000000..43650e7
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diff --git a/feladat3/feladat3/filename2.dat b/feladat3/feladat3/filename2.dat
new file mode 100644
index 0000000..13aa345
Binary files /dev/null and b/feladat3/feladat3/filename2.dat differ