Five Variables

AtCoder

IDabc170_a

Time2000ms

Memory256MB

Difficulty—

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 $0$. ## 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. ## Input Input is given from Standard Input in the following format: $x_1$ $x_2$ $x_3$ $x_4$ $x_5$ [samples]

Samples

Input #1

0 2 3 4 5

Output #1

1

In this case, Snuke assigned $0$ to $x_1$, so we should print $1$.

Input #2

1 2 0 4 5

Output #2

API Response (JSON)

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  "problem": {
    "name": "Five Variables",
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      "content": "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 th",
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      "memory_limit": 262144
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    "difficulty": "None",
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    {
      "statement_type": "Markdown",
      "content": "We have five variables $x_1, x_2, x_3, x_4,$ and $x_5$.\nThe variable $x_i$ was initially assigned a value of $i$.\nSnuke chose one of these variables and assigned it $0$.\nYou are given the values of th...",
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