/in/foo.cc: In function 'int main()':
/in/foo.cc:16:42: warning: format '%d' expects argument of type 'int*', but argument 2 has type 'bool*' [-Wformat=]
   scanf ("%d%d",&e[i].vis[j],&e[i].num[j]);
                                          ^
/in/foo.cc:33:7: warning: suggest explicit braces to avoid ambiguous 'else' [-Wparentheses]
    if (now != e[f].num[x])
       ^
/in/foo.cc:19:7: warning: variable 'flag' set but not used [-Wunused-but-set-variable]
  bool flag = false;
       ^~~~