/in/foo.cc: In function 'void join(int&, int)':
/in/foo.cc:78:50: warning: narrowing conversion of '((((1ll * ((long long int)rand())) * ((long long int)rand())) % ((long long int)rand())) + 1ll)' from 'long long int' to 'int' inside { } [-Wnarrowing]
  Tr[++_tot]=(owo) {0,0,w,1ll*rand()*rand()%rand()+1,1};
                          ~~~~~~~~~~~~~~~~~~~~~~~~^~