diff --git a/Problem_007/7_003.cpp b/Problem_007/7_003.cpp
index d4ee4a6..955ad0e 100644
--- a/Problem_007/7_003.cpp
+++ b/Problem_007/7_003.cpp
@@ -5,60 +5,32 @@ const int MAX_SIZE = 100;
 const int MAXR = 100;
 const int MAXC = 100;
 
-bool isFrobeniusMatrix(float matrix[MAX_SIZE][MAX_SIZE], int size)
-{
-    int countNonZeroColumns = 0;
-
-    for (int i = 0; i < size; i++)
-        if (matrix[i][i] != 1)
-            return false;
-    for (int i = 0; i < size; i++)
-        for (int j = 0; j < size; j++)
-            if (i < j && matrix[i][j] != 0)
-                return false;
+bool isMaTranDonVi(int matrix[MAX_SIZE][MAX_SIZE], int size);
+void NhapMaTran(int matrix[MAX_SIZE][MAX_SIZE], int &size);
 
+void NhapMaTran(int matrix[MAX_SIZE][MAX_SIZE], int &size)
+{
+    cin >> size;
     for (int i = 0; i < size; i++)
     {
-        int k = 0;
         for (int j = 0; j < size; j++)
         {
-            if (j > i && matrix[j][i] != 0)
-                k++;
+            cin >> matrix[i][j];
         }
-        if (k != 0)
-            countNonZeroColumns++;
     }
-    if (countNonZeroColumns > 1)
-        return false;
-    return true;
 }
 
-void NhapMaTran(float matrix[MAX_SIZE][MAX_SIZE], int size)
+bool isMaTranDonVi(int matrix[MAX_SIZE][MAX_SIZE], int size)
 {
     for (int i = 0; i < size; i++)
     {
         for (int j = 0; j < size; j++)
         {
-            cin >> matrix[i][j];
+            if ((i == j && matrix[i][j] != 1) || (i != j && matrix[i][j] != 0))
+            {
+                return false;
+            }
         }
     }
-}
-
-int main()
-{
-    float a[MAXR][MAXC];
-    int n;
-    cin >> n;
-    int m;
-    cin >> m;
-    NhapMaTran(a, n);
-    if (isFrobeniusMatrix(a, n))
-    {
-        cout << "Yes";
-    }
-    else
-    {
-        cout << "No";
-    }
-    return 0;
+    return true;
 }
\ No newline at end of file
diff --git a/docs/UnworkedProject.md b/docs/UnworkedProject.md
index eabd311..23411a1 100644
--- a/docs/UnworkedProject.md
+++ b/docs/UnworkedProject.md
@@ -1,8 +1,12 @@
 ## UNWORKED PROJECTS
 
-List các file chưa làm:
+
+### PROBLEM_006
 
 1.	[6_004](../Problem_006/6_004.cpp)
 2.	[6_007](../Problem_006/6_007.cpp)
-3.	[7_002](../Problem_007/7_002.cpp)
-4.	[7_007](../Problem_007/7_007.cpp)
+
+### PROBLEM_007
+
+1.	[7_002](../Problem_007/7_002.cpp)
+2.	[7_007](../Problem_007/7_007.cpp)
diff --git a/docs/WorkedProject.md b/docs/WorkedProject.md
index 9c30a72..a2d8869 100644
--- a/docs/WorkedProject.md
+++ b/docs/WorkedProject.md
@@ -1,20 +1,24 @@
 ## WORKED PROJECTS
 
-List các file đã làm:
+
+### PROBLEM_006
 
 1.	[6_001](../Problem_006/6_001.cpp)
-1.	[6_002](../Problem_006/6_002.cpp)
-1.	[6_003](../Problem_006/6_003.cpp)
-1.	[6_005](../Problem_006/6_005.cpp)
-1.	[6_006](../Problem_006/6_006.cpp)
-1.	[6_008](../Problem_006/6_008.cpp)
-1.	[6_009](../Problem_006/6_009.cpp)
-1.	[6_010](../Problem_006/6_010.cpp)
+2.	[6_002](../Problem_006/6_002.cpp)
+3.	[6_003](../Problem_006/6_003.cpp)
+4.	[6_005](../Problem_006/6_005.cpp)
+5.	[6_006](../Problem_006/6_006.cpp)
+6.	[6_008](../Problem_006/6_008.cpp)
+7.	[6_009](../Problem_006/6_009.cpp)
+8.	[6_010](../Problem_006/6_010.cpp)
+
+### PROBLEM_007
+
 1.	[7_001](../Problem_007/7_001.cpp)
-1.	[7_003](../Problem_007/7_003.cpp)
-1.	[7_004](../Problem_007/7_004.cpp)
-1.	[7_005](../Problem_007/7_005.cpp)
-1.	[7_006](../Problem_007/7_006.cpp)
-1.	[7_008](../Problem_007/7_008.cpp)
-1.	[7_009](../Problem_007/7_009.cpp)
-1.	[7_010](../Problem_007/7_010.cpp)
+2.	[7_003](../Problem_007/7_003.cpp)
+3.	[7_004](../Problem_007/7_004.cpp)
+4.	[7_005](../Problem_007/7_005.cpp)
+5.	[7_006](../Problem_007/7_006.cpp)
+6.	[7_008](../Problem_007/7_008.cpp)
+7.	[7_009](../Problem_007/7_009.cpp)
+8.	[7_010](../Problem_007/7_010.cpp)