| 摘要 |
A cancel request for canceling a purchased betting ticket is accepted from a first user (S1), said cancel request including information with which it is possible to specify the first user who purchased the betting ticket and the bet type and selections of the purchased betting ticket. After the acceptance of the cancel request, if a purchase of a betting ticket having the same bet type and selections as the bet type and selections of the betting ticket for which the cancel request has been accepted from the first user is accepted from a second user, an amount of money is paid to the first user's account in accordance with the amount of the betting ticket for which the cancel request has been accepted from the first user and the amount of the betting ticket accepted from the second user, and information indicating that the cancel request has been settled is output for the first user if the amount of money to be paid is not zero (S3, S4, S5, S6, S9). |
