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#include<cstdio> int hash[10010]; int main() { int n,m,a; scanf("%d %d",&n,&m); for(int i=0;i<n;i++) { scanf("%d",&a); hash[a]++; } for(int i=0;i<10010;i++) { if(hash[i]&&hash[m-i]) { if(i==m-i&&ha.

1148 Werewolf - Simple Version (20分) Werewolf（狼人杀） is a game in which the players are partitioned into two parties: the werewolves and the human beings. Suppose that in a game, player #1 said: "Player #2 is a werewolf."; player #2 said: "Player #3 is a