Database System Concepts
Database System Concepts
7th Edition
ISBN: 9780078022159
Author: Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher: McGraw-Hill Education
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Problem F. Cities
Input file:
Output file:
standard input
standard output
1 second
256 megabytes
Time limit:
Memory limit:
Jonathan is a very curious boy. He has a list of countries and list of cities of each country. His task is for
each city determining country where is located. But Jonathan doesn't know geography and needs your
help.
Input
In the first line of the input given an integer n.
The next n lines given the name of country, count of cities k, and cities of of this country.
It is guaranteed that their names are unique.
In the next line given m - the number of names of cities which Jonathan asked.
The next m lines given names of cities.
Output
For each Jonathan's query - print country name, if we know in which country is located. Otherwise, print
"Unknown".
Example
standard input
standard output
Kazakshtan
Kazakshtan 3 Kyzylorda Karaganda Uralsk USA
USA 3 California Berkly New-York
Unknown
England 1 London
Kazakshtan
4
Kyzylorda
New-York
Atyrau
Karaganda
expand button
Transcribed Image Text:Problem F. Cities Input file: Output file: standard input standard output 1 second 256 megabytes Time limit: Memory limit: Jonathan is a very curious boy. He has a list of countries and list of cities of each country. His task is for each city determining country where is located. But Jonathan doesn't know geography and needs your help. Input In the first line of the input given an integer n. The next n lines given the name of country, count of cities k, and cities of of this country. It is guaranteed that their names are unique. In the next line given m - the number of names of cities which Jonathan asked. The next m lines given names of cities. Output For each Jonathan's query - print country name, if we know in which country is located. Otherwise, print "Unknown". Example standard input standard output Kazakshtan Kazakshtan 3 Kyzylorda Karaganda Uralsk USA USA 3 California Berkly New-York Unknown England 1 London Kazakshtan 4 Kyzylorda New-York Atyrau Karaganda
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