diff --git a/QUSTOJ/1722.c b/QUSTOJ/1722.c
new file mode 100644
index 0000000..abe5cf4
--- /dev/null
+++ b/QUSTOJ/1722.c
@@ -0,0 +1,23 @@
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+char buff[32];
+int main()
+{
+    int a,b;
+    scanf("%d,%d",&a,&b);
+    int tmp;
+    int ans=0;
+    for(int i=1;i<=b;i++)
+    {
+        for(int j=1;j<=i;j++)
+        {
+            buff[j-1]='0'+a;
+        }
+        buff[i]=0;
+        sscanf(buff,"%d",&tmp);
+        ans+=tmp;
+    }
+    printf("a=%d,b=%d\n%d\n",a,b,ans);
+    return 0;
+}