#include <bits/stdc++.h>
using namespace std;
#define ll long long
int main() {
ios_base::sync_with_stdio(0), cin.tie(0);
int n, m, d;
cin >> n >> m >> d;
int a[n];
vector<int> v;
for (int i = 0; i < n; i++) {
cin >> a[i];
v.push_back(a[i]);
}
int b[m];
for (int i = 0; i < m; i++) {
cin >> b[i];
v.push_back(b[i]);
sort(v.begin(), v.end());
double l = 0, r = 1e18;
for (int _ = 0; _ < 100; _++) {
double md = (l + r) / 2;
double lst = -1e18;
bool ok = 1;
for (auto x : v) {
lst = max(lst + d, x - md);
if (lst > x + md) {
ok = 0;
break;
}
}
if (ok) {
r = md;
} else {
l = md;
}
}
string s = to_string(l);
while (s.back() == '0') s.pop_back();
if (s.back() == '.') s.pop_back();
cout << s << ' ';
}
cout << '\n';
return 0;
}
