export type ParticipantId = number

export interface Participant {
  id: ParticipantId
  name: string
}

export interface Expense {
  id: number
  amountCents: number
  payerId: ParticipantId
  participantIds: ParticipantId[]
}

export interface Settlement {
  fromId: ParticipantId
  toId: ParticipantId
  amountCents: number
}