diff --git a/fill.c b/fill.c
index f3a2d77..fecb6e1 100644
--- a/fill.c
+++ b/fill.c
@@ -1,32 +1,32 @@
-#include"all.h"
-int main(){
-    clock_t st, end;
-    st=clock();
-    initRandomSeed();
-    int board[9][9] = {{5, 3, 0, 0, 7, 0, 0, 0, 0}, 
-    {6, 0, 0, 1, 9, 5, 0, 0, 0}, 
-    {0, 9, 8, 0, 0, 0, 0, 6, 0}, 
-    {8, 0, 0, 0, 6, 0, 0, 0, 3}, 
-    {4, 0, 0, 8, 0, 3, 0, 0, 1}, 
-    {7, 0, 0, 0, 2, 0, 0, 0, 6}, 
-    {0, 6, 0, 0, 0, 0, 2, 8, 0}, 
-    {0, 0, 0, 4, 1, 9, 0, 0, 5}, 
-    {0, 0, 0, 0, 8, 0, 0, 7, 9}};
-    struct Sudoku a;
-    sudokufromArray(board, &a);
-    printf("The original Sudoku matrix: \n");
-    sudokuPrint(a);
-    if(sudokuJudge(a)){
-        printf("No solution!\n");
-        return 0;
-    }
-    struct Sudoku *pres = sudokuFill(&a);
-    if(!pres){
-        printf("No solution!\n");
-        return 0;
-    }
-    printf("The solution of Sudoku matrix:\n");
-    sudokuPrint(*pres);
-    end=clock();
-    printf("dur:%ldms\n", end-st);
+#include"all.h"
+int main(){
+    clock_t st, end;
+    st=clock();
+    initRandomSeed();
+    int board[9][9] = {{5, 3, 0, 0, 7, 0, 0, 0, 0}, 
+    {6, 0, 0, 1, 9, 5, 0, 0, 0}, 
+    {0, 9, 8, 0, 0, 0, 0, 6, 0}, 
+    {8, 0, 0, 0, 6, 0, 0, 0, 3}, 
+    {4, 0, 0, 8, 0, 3, 0, 0, 1}, 
+    {7, 0, 0, 0, 2, 0, 0, 0, 6}, 
+    {0, 6, 0, 0, 0, 0, 2, 8, 0}, 
+    {0, 0, 0, 4, 1, 9, 0, 0, 5}, 
+    {0, 0, 0, 0, 8, 0, 0, 7, 9}};
+    struct Sudoku a;
+    sudokufromArray(board, &a);
+    printf("The original Sudoku matrix: \n");
+    sudokuPrint(a);
+    if(sudokuJudge(a)){
+        printf("No solution!\n");
+        return 0;
+    }
+    struct Sudoku *pres = sudokuFill(&a);
+    if(!pres){
+        printf("No solution!\n");
+        return 0;
+    }
+    printf("The solution of Sudoku matrix:\n");
+    sudokuPrint(*pres);
+    end=clock();
+    printf("dur:%.1lfms\n", ((double)end-st)/CLOCKS_PER_SEC*1000);
 }
\ No newline at end of file