Do You Know Your ABCs?#10364

Do You Know Your ABCs? (Editorial)

Sort all seven input numbers. The two smallest ones correspond to the values of $a$ and $b$ . The largest number in the list represents the sum $a + b + c$ a + b + c. Subtracting $a$ and $b$ from it gives the value of $c$ .

Example

Sort the input numbers.

We have: $a = 2, b = 2$ a = 2, b = 2. Since $a + b + c = 11$ a + b + c = 11, then $c = 11 - a - b = 11 - 2 - 2 = 7$ c = 11 - a - b = 11 - 2 - 2 = 7.

Algorithm implementation

Read the seven input numbers into an array.

for (i = 0; i < 7; i++)
  scanf("%d", &nums[i]);

Sort the array.

sort(nums, nums + 7);

The two smallest numbers correspond to the values of $a$ and $b$ .

a = nums[0], b = nums[1];

The largest number in the array equals $a + b + c$ a + b + c. Subtracting $a$ and $b$ from it gives $c$ .

c = nums[6] - a - b;

Print the answer.

printf("%d %d %d\n", a, b, c);