/in/foo.cc: In function 'void solve()':
/in/foo.cc:53:38: warning: format '%d' expects argument of type 'int', but argument 2 has type 'long long int' [-Wformat=]
    printf("%d\n",ksm(2,x.c)*(ll)x.d%P);
                                      ^
/in/foo.cc:47:6: warning: unused variable 'lef' [-Wunused-variable]
  int lef=n;
      ^~~