风险厌恶判断

def solve(____):
    if certain_equivalent < expected_value:
        risk_attitude = "____"
    elif certain_equivalent == expected_value:
        risk_attitude = "____"
    else:
        risk_attitude = "____"
    risk_premium = expected_value - certain_equivalent
    return {"____": certain_equivalent, "____": expected_value, "____": risk_attitude, "____": risk_premium}