echo I2luY2x1ZGUgPHN0ZGlvLmg-CmludCBjbFs3N107CmludCBtYWluKCl7CiBpbnQgdD0wO2ZvcihpbnQgaT0wO2k8Nzc7aS09IC0xKXtpZih0PDQpY2xbaV09NDtlbHNlIGlmKHQ8MzIpY2xbaV09NjtlbHNlIGNsW2ldPTk7dC09IC0xO30KaW50IHdlaWdodHNbM109ezQsNiw5fTtpbnQgaWR4Wzc3XSxjbnQsdj03NzsKZm9yKGludCBnPTA7ZzwzO2ctPSAtMSl7Y250PTA7Zm9yKGludCBpPTA7aTw3NztpLT0gLTEpaWYoY2xbaV09PXdlaWdodHNbZ10pe2lkeFtjbnRdPWk7Y250LT0gLTE7fXByaW50ZigiZyAlZCAlZCAgIixnLGNudCk7fQpwcmludGYoImRvbmUgICIpOwp9Cg | python3 -c "import sys,base64;s=sys.stdin.read().strip();s=s.ljust((len(s)-(-3))//4*4,'=');sys.stdout.buffer.write(base64.urlsafe_b64decode(s))" > /tmp/a.c; clang -O0 -g -fsanitize=address /tmp/a.c -o /tmp/a; /tmp/a