Call Forwarding        Test case for judging


The following input:

3
1111 0100 0200 2222
1111 0301 0500 4444
2222 0200 0200 3333
3333 0250 1000 1111
7777 1000 2000 7777
0000
0050 1111
0150 1111
0200 1111
0225 2222
0270 1111
0320 1111
0320 3333
0900 3000
1250 3333
1250 7777
9000
0001 0100 0300 0002
0002 0100 0300 0003
0003 0100 0300 0004
0004 0100 0300 0005
0005 0100 0200 0006
0006 0100 0200 0007
0007 0200 0200 0001
0000
0150 0001
0150 0005
0150 0007
0250 0001
0250 0005
0250 0007
0350 0001
0350 0005
0350 0007
9000
0001 0100 0300 0002
0000
0050 0001
0100 0001
0150 0001
0200 0002
0400 0001
0401 0001
9000


should produce the following output:

CALL FORWARDING OUTPUT
SYSTEM 1
AT 0050 CALL TO 1111 RINGS 1111
AT 0150 CALL TO 1111 RINGS 2222
AT 0200 CALL TO 1111 RINGS 3333
AT 0225 CALL TO 2222 RINGS 3333
AT 0270 CALL TO 1111 RINGS 9999
AT 0320 CALL TO 1111 RINGS 4444
AT 0320 CALL TO 3333 RINGS 4444
AT 0900 CALL TO 3000 RINGS 3000
AT 1250 CALL TO 3333 RINGS 1111
AT 1250 CALL TO 7777 RINGS 9999
SYSTEM 2
AT 0150 CALL TO 0001 RINGS 0007
AT 0150 CALL TO 0005 RINGS 0007
AT 0150 CALL TO 0007 RINGS 0007
AT 0250 CALL TO 0001 RINGS 9999
AT 0250 CALL TO 0005 RINGS 9999
AT 0250 CALL TO 0007 RINGS 9999
AT 0350 CALL TO 0001 RINGS 0005
AT 0350 CALL TO 0005 RINGS 0005
AT 0350 CALL TO 0007 RINGS 0005
SYSTEM 3
AT 0050 CALL TO 0001 RINGS 0001
AT 0100 CALL TO 0001 RINGS 0002
AT 0150 CALL TO 0001 RINGS 0002
AT 0200 CALL TO 0002 RINGS 0002
AT 0400 CALL TO 0001 RINGS 0002
AT 0401 CALL TO 0001 RINGS 0001
END OF OUTPUT