Data input format

Data output format

Examples

Data input

Data output

email\n

.\n

userID1\n

group1 ID\n

group2 ID\n

…

groupN ID\n

.\n

The user account belongs to only one user group.

user@example.com

userID1

managerGroup

The user account does not exist.

hacker@example.com

does not exist

An error has occurred.

onemoreuser@example.com

ERROR connection lost