diff --git a/28_day/Makefile b/28_day/Makefile
index 23e155c..2d22dbf 100644
--- a/28_day/Makefile
+++ b/28_day/Makefile
@@ -19,7 +19,8 @@ haribote.img : haribote/ipl10.bin haribote/haribote.sys Makefile \
 		winhelo/winhelo.hrb winhelo2/winhelo2.hrb winhelo3/winhelo3.hrb \
 		star1/star1.hrb stars/stars.hrb stars2/stars2.hrb \
 		lines/lines.hrb walk/walk.hrb noodle/noodle.hrb \
-		beepdown/beepdown.hrb color/color.hrb color2/color2.hrb
+		beepdown/beepdown.hrb color/color.hrb color2/color2.hrb \
+		sosu/sosu.hrb sosu3/sosu3.hrb
 	$(EDIMG)   imgin:../z_tools/fdimg0at.tek \
 		wbinimg src:haribote/ipl10.bin len:512 from:0 to:0 \
 		copy from:haribote/haribote.sys to:@: \
@@ -41,6 +42,8 @@ haribote.img : haribote/ipl10.bin haribote/haribote.sys Makefile \
 		copy from:beepdown/beepdown.hrb to:@: \
 		copy from:color/color.hrb to:@: \
 		copy from:color2/color2.hrb to:@: \
+		copy from:sosu/sosu.hrb to:@: \
+		copy from:sosu3/sosu3.hrb to:@: \
 		imgout:haribote.img
 
 #命令
@@ -73,6 +76,8 @@ full :
 	$(MAKE) -C beepdown
 	$(MAKE) -C color
 	$(MAKE) -C color2
+	$(MAKE) -C sosu
+	$(MAKE) -C sosu3
 	$(MAKE) haribote.img
 
 run_full :
@@ -114,6 +119,8 @@ clean_full :
 	$(MAKE) -C beepdown		clean
 	$(MAKE) -C color		clean
 	$(MAKE) -C color2		clean
+	$(MAKE) -C sosu			clean
+	$(MAKE) -C sosu3		clean
 
 src_only_full :
 	$(MAKE) -C haribote		src_only
@@ -134,6 +141,8 @@ src_only_full :
 	$(MAKE) -C beepdown		src_only
 	$(MAKE) -C color		src_only
 	$(MAKE) -C color2		src_only
+	$(MAKE) -C sosu			src_only
+	$(MAKE) -C sosu3		src_only
 	-$(DEL) haribote.img
 
 refresh :
diff --git a/28_day/sosu/!cons_9x.bat b/28_day/sosu/!cons_9x.bat
new file mode 100644
index 0000000..e42252a
--- /dev/null
+++ b/28_day/sosu/!cons_9x.bat
@@ -0,0 +1 @@
+command
\ No newline at end of file
diff --git a/28_day/sosu/!cons_nt.bat b/28_day/sosu/!cons_nt.bat
new file mode 100644
index 0000000..6e07473
--- /dev/null
+++ b/28_day/sosu/!cons_nt.bat
@@ -0,0 +1 @@
+cmd.exe
\ No newline at end of file
diff --git a/28_day/sosu/Makefile b/28_day/sosu/Makefile
new file mode 100644
index 0000000..de7b705
--- /dev/null
+++ b/28_day/sosu/Makefile
@@ -0,0 +1,5 @@
+APP      = sosu
+STACK    = 2k
+MALLOC   = 0k
+
+include ../app_make.txt
diff --git a/28_day/sosu/make.bat b/28_day/sosu/make.bat
new file mode 100644
index 0000000..6b0dbfc
--- /dev/null
+++ b/28_day/sosu/make.bat
@@ -0,0 +1 @@
+..\..\z_tools\make.exe %1 %2 %3 %4 %5 %6 %7 %8 %9
\ No newline at end of file
diff --git a/28_day/sosu/sosu.c b/28_day/sosu/sosu.c
new file mode 100644
index 0000000..6b9a997
--- /dev/null
+++ b/28_day/sosu/sosu.c
@@ -0,0 +1,24 @@
+#include <stdio.h>
+#include "apilib.h"
+
+#define MAX		1000
+
+void HariMain(void)
+{
+	char flag[MAX], s[8];
+	int i, j;
+	for (i = 0; i < MAX; i++) {
+		flag[i] = 0;
+	}
+	for (i = 2; i < MAX; i++) {
+		if (flag[i] == 0) {
+			/*没有标记的为质数*/
+			sprintf(s, "%d ", i);
+			api_putstr0(s);
+			for (j = i * 2; j < MAX; j += i) {
+				flag[j] = 1;	/*给它的倍数做上标记*/
+			}
+		}
+	}
+	api_end();
+}
diff --git a/28_day/sosu2/!cons_9x.bat b/28_day/sosu2/!cons_9x.bat
new file mode 100644
index 0000000..e42252a
--- /dev/null
+++ b/28_day/sosu2/!cons_9x.bat
@@ -0,0 +1 @@
+command
\ No newline at end of file
diff --git a/28_day/sosu2/!cons_nt.bat b/28_day/sosu2/!cons_nt.bat
new file mode 100644
index 0000000..6e07473
--- /dev/null
+++ b/28_day/sosu2/!cons_nt.bat
@@ -0,0 +1 @@
+cmd.exe
\ No newline at end of file
diff --git a/28_day/sosu2/Makefile b/28_day/sosu2/Makefile
new file mode 100644
index 0000000..d97a733
--- /dev/null
+++ b/28_day/sosu2/Makefile
@@ -0,0 +1,5 @@
+APP      = sosu2
+STACK    = 11k
+MALLOC   = 0k
+
+include ../app_make.txt
diff --git a/28_day/sosu2/make.bat b/28_day/sosu2/make.bat
new file mode 100644
index 0000000..6b0dbfc
--- /dev/null
+++ b/28_day/sosu2/make.bat
@@ -0,0 +1 @@
+..\..\z_tools\make.exe %1 %2 %3 %4 %5 %6 %7 %8 %9
\ No newline at end of file
diff --git a/28_day/sosu2/sosu2.c b/28_day/sosu2/sosu2.c
new file mode 100644
index 0000000..381e436
--- /dev/null
+++ b/28_day/sosu2/sosu2.c
@@ -0,0 +1,24 @@
+#include <stdio.h>
+#include "apilib.h"
+
+#define MAX		10000
+
+void HariMain(void)
+{
+	char flag[MAX], s[8];
+	int i, j;
+	for (i = 0; i < MAX; i++) {
+		flag[i] = 0;
+	}
+	for (i = 2; i < MAX; i++) {
+		if (flag[i] == 0) {
+			/*没有标记的为质数*/
+			sprintf(s, "%d ", i);
+			api_putstr0(s);
+			for (j = i * 2; j < MAX; j += i) {
+				flag[j] = 1;	/*给它的倍数做上标记*/
+			}
+		}
+	}
+	api_end();
+}
diff --git a/28_day/sosu3/!cons_9x.bat b/28_day/sosu3/!cons_9x.bat
new file mode 100644
index 0000000..e42252a
--- /dev/null
+++ b/28_day/sosu3/!cons_9x.bat
@@ -0,0 +1 @@
+command
\ No newline at end of file
diff --git a/28_day/sosu3/!cons_nt.bat b/28_day/sosu3/!cons_nt.bat
new file mode 100644
index 0000000..6e07473
--- /dev/null
+++ b/28_day/sosu3/!cons_nt.bat
@@ -0,0 +1 @@
+cmd.exe
\ No newline at end of file
diff --git a/28_day/sosu3/Makefile b/28_day/sosu3/Makefile
new file mode 100644
index 0000000..a7e9900
--- /dev/null
+++ b/28_day/sosu3/Makefile
@@ -0,0 +1,5 @@
+APP      = sosu3
+STACK    = 1k
+MALLOC   = 42k
+
+include ../app_make.txt
diff --git a/28_day/sosu3/make.bat b/28_day/sosu3/make.bat
new file mode 100644
index 0000000..6b0dbfc
--- /dev/null
+++ b/28_day/sosu3/make.bat
@@ -0,0 +1 @@
+..\..\z_tools\make.exe %1 %2 %3 %4 %5 %6 %7 %8 %9
\ No newline at end of file
diff --git a/28_day/sosu3/sosu3.c b/28_day/sosu3/sosu3.c
new file mode 100644
index 0000000..db4527b
--- /dev/null
+++ b/28_day/sosu3/sosu3.c
@@ -0,0 +1,26 @@
+#include <stdio.h>
+#include "apilib.h"
+
+#define MAX		10000
+
+void HariMain(void)
+{
+	char *flag, s[8];
+	int i, j;
+	api_initmalloc();
+	flag = api_malloc(MAX);
+	for (i = 0; i < MAX; i++) {
+		flag[i] = 0;
+	}
+	for (i = 2; i < MAX; i++) {
+		if (flag[i] == 0) {
+			/*没有标记的为质数*/
+			sprintf(s, "%d ", i);
+			api_putstr0(s);
+			for (j = i * 2; j < MAX; j += i) {
+				flag[j] = 1;	/*给它的倍数做上标记*/
+			}
+		}
+	}
+	api_end();
+}