关于ABC444

cchu

2026-02-08 16:55:40

发布于：江西

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A

#include <bits/stdc++.h>
using namespace std;
int main() {
	int n;
	cin >> n;
	if (n % 111 == 0) cout << "Yes";
	else cout << "No";
	return 0; 
}

B

#include <bits/stdc++.h>
using namespace std;
int main() {
	int n, k, cnt = 0;
	cin >> n >> k;
	for (int i = 1; i <= n; i++) {
		int sum = 0, a = i;
		while (a != 0) {
			sum += a % 10;
			a /= 10; 
		}
		if (sum == k) cnt++;
	}
	cout << cnt;
	return 0;
}