6874: ABC170 —— A - Five Variables
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Description
We have five variables $x_1, x_2, x_3, x_4,$, and $x_5$.
The variable $x_i$ was initially assigned a value of $i$.
Snuke chose one of these variables and assigned it $0$.
You are given the values of the five variables after this assignment.
Find out which variable Snuke assigned $0$.
The variable $x_i$ was initially assigned a value of $i$.
Snuke chose one of these variables and assigned it $0$.
You are given the values of the five variables after this assignment.
Find out which variable Snuke assigned $0$.
Input
Input is given from Standard Input in the following format:
$x_1\ x_2\ x_3\ x_4\ x_5$
$x_1\ x_2\ x_3\ x_4\ x_5$
Output
If the variable Snuke assigned $0$ was $x_i$, print the integer $i$.
Constraints
The values of $x_1, x_2, x_3, x_4$, and $x_5$ given as input are a possible outcome of the assignment by Snuke.
Sample 1 Input
0 2 3 4 5
Sample 1 Output
1
In this case, Snuke assigned $0$ to $x_1$, so we should print $1$.
Sample 2 Input
1 2 0 4 5
Sample 2 Output
3