diff --git a/assets/p42.png b/assets/p42.png
index 8694279..004f634 100644
Binary files a/assets/p42.png and b/assets/p42.png differ
diff --git a/document.yaml b/document.yaml
index abbc4ee..ce139a1 100644
--- a/document.yaml
+++ b/document.yaml
@@ -12,7 +12,7 @@ date:
 turnin:
   year: 令和7年
   month: 07月
-  day: 08日
+  day: 09日
 
 school_name: 岐阜工業高等専門学校
 department: 電子制御工学科
diff --git a/main.tex b/main.tex
index 97ca324..5b6dd09 100644
--- a/main.tex
+++ b/main.tex
@@ -5,7 +5,7 @@
 \studentid{2024D14}
 \seatingnum{15}
 \reportdate{令和7年}{07月}{03日}
-\turnindate{令和7年}{07月}{08日}
+\turnindate{令和7年}{07月}{09日}
 \schoolname{岐阜工業高等専門学校}
 \department{電子制御工学科}
 \subject{情報処理Ｉ}
diff --git a/output/main.pdf b/output/main.pdf
index 798b6fc..f681015 100644
Binary files a/output/main.pdf and b/output/main.pdf differ
diff --git a/programs/p42/main b/programs/p42/main
index c15d588..824322a 100755
Binary files a/programs/p42/main and b/programs/p42/main differ
diff --git a/programs/p42/main.c b/programs/p42/main.c
index e295cd4..03b0519 100644
--- a/programs/p42/main.c
+++ b/programs/p42/main.c
@@ -3,11 +3,17 @@
 int main(void) {
     int a, b, i, ans;
 
-    printf("Input upper limit: ");
+    printf("Input integer: ");
     (void)scanf("%d", &a);
-    printf("Input lower limit: ");
+    printf("Input integer: ");
     (void)scanf("%d", &b);
 
+    if (a < b) {
+        a = a^b;
+        b = a^b;
+        a = a^b;
+    }
+
     i = b;
     ans = 0;