User contributions
- 00:11, 16 December 2015 (diff | hist) . . (+13) . . 1997 PMWC Problems/Problem T9 (→Problem)
- 00:09, 16 December 2015 (diff | hist) . . (-74) . . 1997 PMWC Problems/Problem T9 (→Solution)
- 23:53, 15 December 2015 (diff | hist) . . (+144) . . 1997 PMWC Problems/Problem T9 (→Solution)
- 23:51, 15 December 2015 (diff | hist) . . (+42) . . 1997 PMWC Problems/Problem T9 (→Solution)