3 ms·
The official contest is over but you can try out here: http://www.spoj.pl/HSPLARCH/problems/HS11CNSM/ http://www.spoj.pl/HSPLARCH/problems/HS11CNSM/
by kuszi 15y ago
The official contest is over but you can try out here: http://www.spoj.pl/HSPLARCH/problems/HS11CNSM/ http://www.spoj.pl/HSPLARCH/problems/HS11CNSM/