Question
Fix zero
You are given a sequence of 5 integers A. Initially, Ai (1 ≤ i ≤ 5) assigns i. But due to some glitch, one of the integers in the array becomes 0. Find out which integer of A assigned 0.
Input
The first line contains 5 integers A1, A2 ... A5.
Constraints
The values of A1, A2, A3, A4, A5 given as input are a possible outcome of the assignment.
Constraints
The values of A1, A2, A3, A4, A5 given as input are a possible outcome of the assignment.
Output
If the integer assigned 0 was Ai, print the integer i.
Example
Sample Input 1:
0 2 3 4 5
Sample Output 1:
1
Sample Input 2:
1 2 0 4 5
Sample Output 2:
3
0 2 3 4 5
Sample Output 1:
1
Sample Input 2:
1 2 0 4 5
Sample Output 2:
3