/in/foo.cc:79:6: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type]
 main()
      ^
/in/foo.cc: In function 'int main()':
/in/foo.cc:99:32: warning: format '%d' expects argument of type 'int', but argument 2 has type 'long long int' [-Wformat=]
    printf("Case #%d: -1\n", tim);
                                ^
/in/foo.cc:101:39: warning: format '%d' expects argument of type 'int', but argument 2 has type 'long long int' [-Wformat=]
    printf("Case #%d: %lld\n", tim, ans);
                                       ^