| 摘要 |
PROBLEM TO BE SOLVED: To give a prize to a user corresponding to the utilization condition of the user. SOLUTION: A prize application part 11-1 receives utilization information transmitted from the user and supplies prize application information to a prize information storage part. A winning probability control part 11-2 controls the winning probability of the prize corresponding to prize information stored in a prize information storage part 11-5. Corresponding to that winning probability, a lot drawing part draws lots and determines a winner. A winning reporting part 11-4 reports the lot drawing result to the user. |
