#include <iostream>
using namespace std;
int main() {
int a, b;
cin >> a >> b;
if (a < b && (b - a) % 2 != 0) {
cout << "surori " << b - a;
} else if ((a < b && (b - a) % 2 == 0) || (a > b && (b - a) % 2 != 0) || (a == b && (b - a) % 2 == 0)){
cout << "." << b - a<<" ";
if (a >= b) {
cout << a;
} else {
cout << b;
}
}
//if (a == b) {
// cout << a;
//}
return 0;
}
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