C++

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#include <iostream>
#include <vector>
using namespace std;

typedef long long ll;
#define pb push_back
#define pi pair<int, int>
#define f first
#define mp make_pair
#define s second

Java

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

public class ArrayDesc {
	public static final int MOD = (int)1e9 + 7;
	public static void main(String args[]) throws IOException {
		BufferedReader r = new BufferedReader(new InputStreamReader(System.in));
		StringTokenizer st = new StringTokenizer(r.readLine());
		int N = Integer.parseInt(st.nextToken());
		int M = Integer.parseInt(st.nextToken());