diff --git a/QUSTOJ/1189.c b/QUSTOJ/1189.c
new file mode 100644
index 0000000..be09a9d
--- /dev/null
+++ b/QUSTOJ/1189.c
@@ -0,0 +1,32 @@
+#include <stdio.h>
+int main()
+{
+    int plan[12];
+    int month,saved,now;
+    for(month=0,saved=0,now=0;month<12;month++)
+    {
+        scanf("%d",&plan[month]);
+    }
+    for(month=0;month<12;month++)
+    {
+        now+=300;
+        if(now-plan[month]>=100)
+        {
+            saved=saved+((now-plan[month])/100)*100;
+            now=now-((now-plan[month])/100)*100;
+            now=now-plan[month];
+            continue;
+        }
+        else if(now-plan[month]<0)
+        {
+            printf("%c%d\n",'-',month+1);
+            return 0;
+        }
+        else
+        {
+            now=now-plan[month];
+        }
+    }
+    printf("%d\n",now+(saved*6)/5);
+    return 0;
+}