SEOUL, South Korea — South Korea said on Friday that it had no intention of sharing some of its 2018 Pyeongchang Winter Olympic Games with its historic rival Japan, rejecting an International Olympic Committee suggestion for cost-cutting.

In one of the biggest changes in the Olympic movement in decades, the I.O.C. decided Monday to allow host cities to move competitions to other towns or even to other countries. The idea was to reduce the cost of hosting the Games by using existing venues rather than building new ones.

I.O.C. officials have floated the idea of shifting the bobsled and luge events of the 2018 Games to Japan or elsewhere. But South Korea, where many people harbor resentment against Japan, its onetime colonial ruler, said Friday that it would have none of it.

Cho Yang-ho, chairman of the Pyeongchang organizing committee, “reconfirmed that there was no possibility of moving some events overseas, as the I.O.C. suggested to Pyeongchang,” the committee said in a statement on Friday.