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if score >= 85:
    grade = 'A';
else:
    if score >= 75:
        grade = 'B';
    else:
        if score >= 60:
            grade = 'C';
        else:
            if score > 50:
                grade = 'D';
            else:
                if score > 40:
                    grade = 'E';
                else:
                    grade = 'F';
print(grade)

start
if (score >= 85) then (true)
	:grade = "'A"';
else (false)
	if (score > 75) then (true)
		:grade = "'B"';
	else (false)
		if (score > 60) then (true)
			:grade = "'C"';
		else (false)
			if (score > 50) then (true)
				:grade = "'D"';
			else (false)
				if (score > 40) then (true)
					:grade = "'E"';
				else (false)
					:grade = "'F"';
				endif
			endif
		endif
	endif
endif
:print(grade);
stop

if score >= 85:
    grade = 'A';
elsif score >= 75:
    grade = 'B';
elsif score >= 60:
    grade = 'C';
elsif score > 50:
    grade = 'D';
elsif score > 40:
    grade = 'E';
else:
    grade = 'F';
print(grade)

(*) --> "if .."
"if .." -->[score > 90] "grade = 'A'"
--> (*)
"if .." -->[score > 80] "grade = 'B'"
--> (*)
"if .." -->[score > 60] "grade = 'C'"
--> (*)
"if .." -->[score > 50] "grade = 'D'"
--> (*)
"if .." -->[score > 40] "grade = 'E'"
-->(*)
"if .." -->[else] "grade = 'F'"
--> (*)