import java.util.*;
import java.util.regex.*;
import java.lang.*;
import java.io.*;
class Ideone
{
{
String str
= "#TEST_ENV_TEST_VAR=\"value\""; Pattern p = Pattern.compile("#TEST_ENV_([^=]*)=\"?(.*[^\"])\"?");
Matcher matcher = p.matcher(str);
if (matcher.find()) {
String key
= matcher.
group(2); }
}
}
aW1wb3J0IGphdmEudXRpbC4qOwppbXBvcnQgamF2YS51dGlsLnJlZ2V4Lio7CmltcG9ydCBqYXZhLmxhbmcuKjsKaW1wb3J0IGphdmEuaW8uKjsKCmNsYXNzIElkZW9uZQp7CglwdWJsaWMgc3RhdGljIHZvaWQgbWFpbiAoU3RyaW5nW10gYXJncykgdGhyb3dzIGphdmEubGFuZy5FeGNlcHRpb24KCXsKCQlTdHJpbmcgc3RyID0gIiNURVNUX0VOVl9URVNUX1ZBUj1cInZhbHVlXCIiOwoJCVBhdHRlcm4gcCA9IFBhdHRlcm4uY29tcGlsZSgiI1RFU1RfRU5WXyhbXj1dKik9XCI/KC4qW15cIl0pXCI/Iik7CgkJTWF0Y2hlciBtYXRjaGVyID0gcC5tYXRjaGVyKHN0cik7CgkJaWYgKG1hdGNoZXIuZmluZCgpKSB7CgkJCVN0cmluZyBrZXkgPSBtYXRjaGVyLmdyb3VwKDIpOwoJCQlTeXN0ZW0ub3V0LnByaW50bG4oa2V5KTsKCQl9Cgl9Cn0=