What follows is an opinion from the Supreme Court of the United States. Your task is to identify the disposition of the case, that is, the treatment the Supreme Court accorded the court whose decision it reviewed. The information relevant to this variable may be found near the end of the summary that begins on the title page of each case, or preferably at the very end of the opinion of the Court. For cases in which the Court granted a motion to dismiss, consider "petition denied or appeal dismissed". There is "no disposition" if the Court denied a motion to dismiss.

Opinion:
BALTIMORE & OHIO RAILROAD CO. et al. v. BOSTON & MAINE RAILROAD et al.
No. 97.
Argued March 27, 1963.
Decided May 20, 1963
Robert W. Oinnane, Jervis Langdon, Jr., and William L. Marbury argued the cause for appellants. With Mr. Ginnane on the briefs for the Interstate Commerce Commission, appellant in No. 99, was I. K. Hay. With Mr. Langdon on the briefs for appellants in No. 97 were Richard R. Bongarts, Robert B. Claytor, John W. Hanifin, John Henry Lewin and William C. Purnell. With Mr. Marbury on the briefs for appellants in No. 98 were Chas. R. Seal, J. Cookman Boyd, Jr., Donald Macleay, John Martin Jones, Jr., Morris Duane, Warren Price, Jr., William C. Burt and Robert M. Beckman.
J. William Doolittle, Thomas E. Dewey and Robert G. Bleakney, Jr. argued the cause for appellees. On the brief for the Boston &'Maine Railroad et al. were Robert G. Bleakney, Jr., Hénry E. Foley and Neal Holland. On the brief for the United States were Solicitor General Cox, Assistant Attorney-General Loevinger, Stephen J. Poliak, Robert B. Hummel, Irwin A. Seibel and John H. D. Wigger. On the brief for the New York Central Railroad Company et al. were Thomas E. Dewey, Everett I. Willis and Leo B. Connelly. On the brief for the State of New York et al. were Louis J. Lejkowitz, Attorney-General of New York, Paxton Blair, Solicitor General, Dunton F. Tynan, Assistant Solicitor General, Sidney Goldstein, Leo A. Larkin, F. A. Mulhern, Morris Handel, Samuel Mandell, Charles W. Merritt, Walter J. Myskow-ski, Arthur L. Winn, Jr. and Samuel H. Moerman.
Together with. No. 98, Maryland Port Authority et al. v. Boston & Maine Railroad et al., and No. 99, Interstate Commerce Commission v. Boston & Maine Railroad et al., also on appeals from the same Court.
Per Curiam.
The judgment is affirmed by an equally divided Court.
Mr. Justice White took no part in the consideration or decision of this case.

Question: What is the disposition of the case, that is, the treatment the Supreme Court accorded the court whose decision it reviewed?

Choices:
stay, petition, or motion granted
affirmed (includes modified)
reversed
reversed and remanded
vacated and remanded
affirmed and reversed (or vacated) in part
affirmed and reversed (or vacated) in part and remanded
vacated
petition denied or appeal dismissed
certification to or from a lower court
no disposition

Answer: 1