情話 · 发布于 2026-02-02 · 浏览 240 回复 0

int a, n;
cin >> a >> n;
int b = 0, s = 0;
for (int i = 1; i <= n; i++) {
	b = b * 10 + a;
	s = s + b;
}
cout << s;
return 0;