USACO Silver 2017 February - Why Did the Cow Cross the Road II

C++

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#include <bits/stdc++.h>

using namespace std;

void setIO(string prob) {
	freopen((prob + ".in").c_str(), "r", stdin);
	freopen((prob + ".out").c_str(), "w", stdout);
}

const int MAX_N = 1e5;

Java

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import java.io.*;
import java.util.*;

public class MaxCross {
	public static void main(String[] args) throws IOException {
		BufferedReader in = new BufferedReader(new FileReader("maxcross.in"));
		PrintWriter pw = new PrintWriter("maxcross.out");
		StringTokenizer st = new StringTokenizer(in.readLine());

		int n = Integer.parseInt(st.nextToken());

Python

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with open("maxcross.in") as read:
	n, k, b = map(int, read.readline().split())
	seen = [0] * (n + 1)
	left, right = 1, k
	value = 0

	for _ in range(b):
		seen[int(read.readline())] = 1

for i in range(left, right + 1):