diff --git a/tasks/elementary/math/sum_of_two_equals_third.toml b/tasks/elementary/math/sum_of_two_equals_third.toml
index f5df5c0..6f1f259 100644
--- a/tasks/elementary/math/sum_of_two_equals_third.toml
+++ b/tasks/elementary/math/sum_of_two_equals_third.toml
@@ -1,143 +1,197 @@
 level             = "easy"
 name              = "sum_of_two_equals_third"
 tags              = ["math", "collections"]
-time_to_solve_sec = 300
+time_to_solve_sec = 60
 
 description_en = """
-Given three integers `nums = [a, b, c]`, determine whether the sum of **two** of them equals the **third**.
+Given three integers, determine whether the sum of two of them equals the third one.
 
 Return `True` if such a pair exists, otherwise return `False`.
 """
 
 description_ru = """
-Даны три целых числа `nums = [a, b, c]`. Определите, существует ли пара чисел, сумма которых равна третьему.
+Даны три целых числа. Определите, существует ли пара чисел, сумма которых равна третьему.
 
 Верните `True`, если такая пара существует, иначе `False`.
 """
 
 limits = """
-- $-10^6 \\leq a,b,c \\leq 10^6$
+- $-10^9 \\leq x, y, z \\leq 10^9$
 """
 
 solution = """
-def solution(nums: list) -> bool:
-    nums.sort()
-    return nums[0] + nums[1] == nums[2]
+def solution(x: int, y: int, z: int) -> bool:
+    return x + y == z or x + z == y or y + z == x
 """
 
 examples = """
-solution([1, 2, 3]) == True
-solution([3, 1, 3]) == False
-solution([3, 1, 2]) == True
+solution(3, 1, 2) == True
+solution(2, 3, 4) == False
+solution(-7, -2, 5) == True
 """
 
 [[input_signature]]
-argument_name = "nums"
+argument_name = "x"
+[input_signature.type]
+name = "integer"
+
+[[input_signature]]
+argument_name = "y"
+[input_signature.type]
+name = "integer"
+
+[[input_signature]]
+argument_name = "z"
 [input_signature.type]
-name = "array"
-[input_signature.type.nested]
 name = "integer"
 
 [output_signature.type]
 name = "boolean"
 
 [[asserts]]
-arguments = [[1, 2, 3]]
+arguments = [3, 1, 2]
 expected  = true
 
 [[asserts]]
-arguments = [[5, 5, 10]]
+arguments = [5, 5, 10]
 expected  = true
 
 [[asserts]]
-arguments = [[3, 7, 10]]
+arguments = [3, 7, 10]
 expected  = true
 
 [[asserts]]
-arguments = [[10, 15, 25]]
+arguments = [10, 25, 15]
 expected  = true
 
 [[asserts]]
-arguments = [[100, 200, 300]]
+arguments = [-1, -2, -3]
 expected  = true
 
 [[asserts]]
-arguments = [[1000, 2000, 3000]]
+arguments = [-5, 0, 5]
 expected  = true
 
 [[asserts]]
-arguments = [[50, 50, 100]]
+arguments = [-7, -2, -5]
 expected  = true
 
 [[asserts]]
-arguments = [[123, 456, 579]]
+arguments = [-7, -2, 5]
 expected  = true
 
 [[asserts]]
-arguments = [[1, 999, 1000]]
+arguments = [-9, -7, -2]
 expected  = true
 
 [[asserts]]
-arguments = [[50000, 50000, 100000]]
+arguments = [-7, -10, 3]
 expected  = true
 
+[[asserts]]
+arguments = [8, -3, 5]
+expected  = true
 
 [[asserts]]
-arguments = [[50571, 33109, 83680]]
+arguments = [-4, -6, -10]
 expected  = true
 
 [[asserts]]
-arguments = [[1, 1, 3]]
-expected  = false
+arguments = [0, 0, 0]
+expected  = true
 
 [[asserts]]
-arguments = [[2, 2, 5]]
+arguments = [11, 0, 11]
+expected  = true
+
+[[asserts]]
+arguments = [-23, -23, 0]
+expected  = true
+
+[[asserts]]
+arguments = [0, 0, 100]
 expected  = false
 
 [[asserts]]
-arguments = [[10, 20, 40]]
+arguments = [-3, 8, -5]
 expected  = false
 
 [[asserts]]
-arguments = [[100, 200, 400]]
+arguments = [-10, 15, 5]
+expected  = true
+
+[[asserts]]
+arguments = [-2, 7, 9]
+expected  = true
+
+[[asserts]]
+arguments = [10, -15, -5]
+expected  = true
+
+[[asserts]]
+arguments = [20, -30, -10]
+expected  = true
+
+[[asserts]]
+arguments = [-5, 3, -2]
+expected  = true
+
+[[asserts]]
+arguments = [7, -12, -5]
+expected  = true
+
+[[asserts]]
+arguments = [1, 1, 3]
 expected  = false
 
 [[asserts]]
-arguments = [[1000, 2000, 4000]]
+arguments = [2, 2, 5]
 expected  = false
 
 [[asserts]]
-arguments = [[5000, 5000, 11000]]
+arguments = [10, 20, 40]
 expected  = false
 
 [[asserts]]
-arguments = [[999, 999, 1999]]
+arguments = [5372, 4396, 7179]
 expected  = false
 
 [[asserts]]
-arguments = [[5372, 4396, 7179]]
+arguments = [58611, 74697, 89900]
 expected  = false
 
 [[asserts]]
-arguments = [[58611, 74697, 89900]]
+arguments = [1, 2, 4]
 expected  = false
 
 [[asserts]]
-arguments = [[1, 2, 4]]
+arguments = [7, 8, 16]
 expected  = false
 
 [[asserts]]
-arguments = [[7, 8, 16]]
+arguments = [99, 100, 200]
 expected  = false
 
 [[asserts]]
-arguments = [[99, 100, 200]]
+arguments = [1, 1, 1]
 expected  = false
 
 [[asserts]]
-arguments = [[1, 1, 1]]
+arguments = [10000, 19999, 10000]
 expected  = false
 
 [[asserts]]
-arguments = [[10000, 10000, 19999]]
+arguments = [1000000000, 1000000000, 2000000000]
+expected  = true
+
+[[asserts]]
+arguments = [-1000000000, -2000000000, -1000000000]
+expected  = true
+
+[[asserts]]
+arguments = [0, -1000000000, 1000000000]
+expected  = true
+
+[[asserts]]
+arguments = [1000000000, 1, -1000000000]
 expected  = false