diff --git a/du3/program.c b/du3/program.c
index d14ce94..4aa5baa 100644
--- a/du3/program.c
+++ b/du3/program.c
@@ -2,10 +2,7 @@
 #include <stdlib.h>
 #include <string.h>
 int main()
-{
- 
- 
- 
+{ 
 char *str;
 str = (char*) malloc(12);
 scanf("%s",str);
@@ -20,6 +17,9 @@ if(m%2!=0 && day>31){
 }
 if(m%2==0 && day>30){
     if(m==2 &&(y%400==0 ||(y%100!=0 && y%4==0))){
+        day-=28;
+    }
+    else if(m==2){
         day-=29;
     }
     else{
@@ -29,6 +29,7 @@ if(m%2==0 && day>30){
 }
 if(m>12){
     m-=12;
+    day--;
     y++;
 }
 if(m>9){