import java.util.* ;
public class Main {
public static void main
( String [ ] args
) {
}
public String foo
( List
< String
> object
) { System .
out .
println ( object.
get ( 0 ) ) ; return null ;
}
public List< String> foo( List< List< String>> object) {
System .
out .
println ( object.
get ( 0 ) .
get ( 0 ) ) ; return null ;
}
}
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