题解 | 游游的数字圈

#include <iostream>
using namespace std;

int main() {
    string str;
    getline(cin, str);

    int count = 0;
    for (char ch : str) {
        if (ch == '0' || ch == '6' || ch == '9') {
            count ++;
        } else if (ch == '8') {
            count += 2;
        } else {
            continue;
        }
    }

    cout << count << endl;
}
// 64 位输出请用 printf("%lld")