#include <bits/stdc++.h>
using namespace std;
int main() {
 int a, b, c;
    cin >> a >> b >> c;
    int arr[3] = {a, b, c};
    sort(arr, arr + 3);
    int x = arr[0], y = arr[1], z = arr[2];
    if (x + y <= z) {
        cout << "no" << endl;
    } else {
        long long xx = 1LL * x * x;
        long long yy = 1LL * y * y;
        long long zz = 1LL * z * z;

        if (xx + yy == zz) {
            cout << "zhijiao" << endl;
        } else if (xx + yy > zz) {
            cout << "ruijiao" << endl;
        } else {
            cout << "dunjiao" << endl;
        }
    }

    return 0;
}
    

不知道是啥反正很屌😀