diff --git a/notes/计算机操作系统.md b/notes/计算机操作系统.md
index 6f4bae92..f302ab2a 100644
--- a/notes/计算机操作系统.md
+++ b/notes/计算机操作系统.md
@@ -535,9 +535,8 @@ void put_tow(i) {
     up(&mutex);
 }
 
-void test(i) {     // 尝试拿起两把筷子
-    if(state[i] == HUNGRY && state[LEFT] != EATING
-      && state[RIGHT] !=EATING) {
+void test(i) {         // 尝试拿起两把筷子
+    if(state[i] == HUNGRY && state[LEFT] != EATING && state[RIGHT] !=EATING) {
         state[i] = EATING;
         up(&s[i]);
     }