echo I2luY2x1ZGUgPHN0ZGlvLmg-CmludCB3aW5zWzc3XVs5XSx3bFs3N10sY2xbNzddOwppbnQgbWFpbigpewogZm9yKGludCByPTA7cjw3O3ItPSAtMSlmb3IoaW50IGM9MDtjPDExO2MtPSAtMSl7aW50IGs9cioxMS0oLWMpO3dsW2tdPTA7aW50IHIwPXItMTtpZihyMDwwKXIwPTA7aW50IHIxPXItKC0xKTtpZihyMT49NylyMT02O2ludCBjMD1jLTE7aWYoYzA8MCljMD0wO2ludCBjMT1jLSgtMSk7aWYoYzE-PTExKWMxPTEwO2ZvcihpbnQgdT1yMDt1PD1yMTt1LT0gLTEpZm9yKGludCB2PWMwO3Y8PWMxO3YtPSAtMSl7d2luc1trXVt3bFtrXV09dSoxMS0oLXYpO3dsW2tdLT0gLTE7fX0KIGZvcihpbnQgaT0wO2k8Nzc7aS09IC0xKWNsW2ldPTA7CiBmb3IoaW50IGs9MDtrPDc3O2stPSAtMSlmb3IoaW50IGo9MDtqPHdsW2tdO2otPSAtMSljbFt3aW5zW2tdW2pdXS09IC0xOwogaW50IGNudFsyMF07Zm9yKGludCBpPTA7aTwyMDtpLT0gLTEpY250W2ldPTA7CiBmb3IoaW50IGk9MDtpPDc3O2ktPSAtMSljbnRbY2xbaV1dLT0gLTE7CiBmb3IoaW50IGk9MDtpPDIwO2ktPSAtMSlpZihjbnRbaV0-MClwcmludGYoIiVkOiVkICIsaSxjbnRbaV0pOwogcHJpbnRmKCIgICIpOwp9Cg | 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 /tmp/a.c -o /tmp/a; /tmp/a