#include <iostream>
using namespace std;
const int TEN = 10;
int main() {
int a, b, counterA = 0, counterB = 0;
cin >> a >> b;
int copyA = a, copyB = b;
while (a || b) {
if (a % 2 && a > 0) {
++counterA;
}
if (b % 2 && b > 0){
++counterB;
}
a /= TEN;
b /= TEN;
}
if (counterA >= counterB) {
cout << copyA;
} else {
cout << copyB;
}
return 0;
}
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