题解 | 数字之和
数字之和
https://www.nowcoder.com/practice/ae759916631f4711a90c4d4d9657f4b0
#include <iostream> using namespace std; int func(long long n) { int res = 0; while (n) { res += n % 10; n /= 10; } return res; } int main() { long long n; while (cin >> n) { cout << func(n) << " " << func(n * n) << endl; } }