# ============================================================
# SECTION 4 — if / elif / else
# ============================================================

score = 72

if score >= 90:
    print("Grade: A")
elif score >= 80:
    print("Grade: B")
elif score >= 70:
    print("Grade: C")
elif score >= 60:
    print("Grade: D")
else:
    print("Grade: F")

# TASK: Change score to 85, then 55, then 90. Run after each change.