#include <iostream>
using namespace std;
int magnitude(int num) {
if (num < 0) {
num *= -1;
}
return num;
}
int main() {
int a, b, x;
cin >> a >> b >> x;
cout << magnitude(a - b) << '\n';
if (magnitude(a - b) < x) {
cout << "DA";
} else {
cout << "NU";
}
return 0;
}
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