8. Triangle Length

Task Description

Write a program to print 1 if the three positive integers $a$, $b$, and $c$ are valid lengths of a triangle, print 0 otherwise. We can verify the condition by assuring that all $a$, $b$, and $c$ are positive, and the sum of any two of them is greater than the third.

給三個整數 $a,\; b,\; c$ 分別代表三角形的邊長。如果能拼成一個三角形，輸出 1，反之輸出 0。判斷三角形是否合法：任兩個邊長和大於第三邊。

Input Format

There are three lines in the input. The first line has the integer $a$, the second line has the integer $b$, and the third line has the integer $c$.

Output Format

There are one line in the output. The line has 1 if the lengths are valid, 0 otherwise.

Sample Input

1
2
3

Sample Output

0

Sample Input

2
4
3

Sample Output

1