题解 | #扭蛋机#

#include <iostream>
#include <vector>
using namespace std;

int main() {
    int a;
    while (cin >> a) { // 注意 while 处理多个 case
        vector<char> res;
        while(a) {
            if(a % 2 == 0) {
                res.push_back('3');
                a = (a-2)/2;
            } else if(a % 2 != 0) {
                res.push_back('2');
                a = (a-1)/2;
            }
        }
        vector<char>::iterator i = res.end() - 1;
        while(i != res.begin() - 1) {
            cout << *i;
            i--;
        }
    }
}
// 64 位输出请用 printf("%lld")

啥b题目