题解 | #小乐乐改数字#
小乐乐改数字
https://www.nowcoder.com/practice/fcd30aac9c4f4028b23919a0c649824d
#include <iostream> #include <cmath> using namespace std; int main() { int a, b = 0; cin >> a; for (int i = 1; a; i++) { if (a % 2) b = b + (int)pow(10, i - 1); a /= 10; } cout << b; }