Update: Rename folder name to XSMOJ

XSMOJ/特殊 a 串数列和.cpp

@@ -0,0 +1,16 @@
+#include <iostream>
+#include <cstring>
+#include <cstdio>
+#include <iomanip>
+using namespace std;
+int main(){
+	int sum1=0,sum2=0;
+	int a,n;
+	scanf("%d%d",&n,&a);
+	for(int i=0;i<n;i++){
+		sum1=sum1*10+a;
+		sum2+=sum1;
+	}
+	printf("%d",sum2);
+	return 0;
+}