05. Multiply Evens Sum by Odds

#include <iostream>

using namespace std;

int main() {
    string n;
    cin >> n;

    int evenSum = 0;
    int oddSum = 0;

    for (int i = 0; i < n.length(); i++) {
        if (n[i] != '-') {
            (n[i] % 2 == 0 ? evenSum : oddSum) += n[i] - 48;
        }
    }

    cout << evenSum * oddSum << endl;
    return 0;
}