// URL: https://yukicoder.me/problems/no/629

import std.algorithm, std.array, std.bitmanip, std.container, std.conv, std.format,
       std.functional, std.math, std.range, std.traits, std.typecons, std.stdio, std.string;

version(unittest) {} else
void main()
{
  int N, M; io.getV(N, M);
  int[] a; io.getA(N, a);

  auto g = Graph(N);
  foreach (_; 0..M) {
    int u, v; io.getV(u, v); --u; --v;
    g.addEdgeB(u, v);
  }

  foreach (i; 0..N) {
    auto b = a.indexed(g[i]);
    auto v1 = b.filter!(bi => bi > a[i]).array;
    auto v2 = b.filter!(bi => bi < a[i]).array;
    if (v1.sort.uniq.walkLength >= 2 || v2.sort.uniq.walkLength >= 2)
      io.put!"{exit: true}"("YES");
  }

  io.put("NO");
}

struct Graph
{
  alias Node = int;
  Node n;
  Node[][] g;
  alias g this;

  pure nothrow @safe
  {
    this(Node n)
    {
      this.n = n;
      g = new Node[][](n);
    }
    void addEdge(Node u, Node v)
      in { assert(0 <= u && u < n && 0 <= v && v < n); }
    do
    {
      g[u] ~= v;
    }
    void addEdgeB(Node u, Node v)
      in { assert(0 <= u && u < n && 0 <= v && v < n); }
    do
    {
      g[u] ~= v;
      g[v] ~= u;
    }
  }
}

struct GraphW(W = int, W i = 10^^9)
{
  alias Node = int, Wt = W, inf = i;
  struct Edge
  {
    Node src, dst;
    Wt wt;
    alias cap = wt;
  }
  Node n;
  Edge[][] g;
  alias g this;

  pure nothrow @safe
  {
    this(Node n)
    {
      this.n = n;
      g = new Edge[][](n);
    }
    void addEdge(Node u, Node v, Wt w)
      in { assert(0 <= u && u < n && 0 <= v && v < n); }
    do
    {
      g[u] ~= Edge(u, v, w);
    }
    void addEdgeB(Node u, Node v, Wt w)
      in { assert(0 <= u && u < n && 0 <= v && v < n); }
    do
    {
      g[u] ~= Edge(u, v, w);
      g[v] ~= Edge(v, u, w);
    }
  }
}

struct GraphM(W = int, W i = 10^^9)
{
  alias Node = int, Wt = W, inf = i;
  Node n;
  Wt[][] g;
  alias g this;

  pure nothrow @safe
  {
    this(int n)
    {
      this.n = n;
      g = new Wt[][](n, n);
    }
    static GraphM!(W, i) init(Node n)
    {
      auto g = GraphM!(W, i)(n);
      foreach (i; 0..n) { g[i][] = inf; g[i][i] = 0; }
      return g;
    }
  }
}

auto io = IO!()();
import std.stdio;
struct IO(alias IN = stdin, alias OUT = stdout)
{
  import std.meta : allSatisfy;
  import core.stdc.stdlib : exit;

  void getV(T...)(ref T v)
  {
    foreach (ref w; v) get(w);
  }
  void getA(T)(size_t n, ref T v)
    if (hasAssignableElements!T)
  {
    v = new T(n);
    foreach (ref w; v) get(w);
  }
  void getC(T...)(size_t n, ref T v)
    if (allSatisfy!(hasAssignableElements, T))
  {
    foreach (ref w; v) w = new typeof(w)(n);
    foreach (i; 0..n) foreach (ref w; v) get(w[i]);
  }
  void getM(T)(size_t r, size_t c, ref T v)
    if (hasAssignableElements!T && hasAssignableElements!(ElementType!T))
  {
    v = new T(r);
    foreach (ref w; v) getA(c, w);
  }
  template getS(E...)
  {
    void getS(T)(size_t n, ref T v)
    {
      v = new T(n);
      foreach (ref w; v) foreach (e; E) mixin("get(w."~e~");");
    }
  }

  const struct PutConf
  {
    bool newline = true, flush, exit;
    string floatFormat = "%.10f", delimiter = " ";
  }

  void put(alias conf = "{}", T...)(T v)
  {
    mixin("const PutConf c = "~conf~"; putMain!c(v);");
  }
  void putB(alias conf = "{}", S, T)(bool c, S t, T f)
  {
    if (c) put!conf(t);
    else put!conf(f);
  }
  void putRaw(T...)(T v)
  {
    OUT.write(v);
    OUT.writeln;
  }

  private
  {
    dchar[] buf;
    auto sp = (new dchar[](0)).splitter;

    void nextLine()
    {
      IN.readln(buf);
      sp = buf.splitter;
    }
    void get(T)(ref T v)
    {
      if (sp.empty) nextLine();
      v = sp.front.to!T;
      sp.popFront();
    }

    void putMain(PutConf c, T...)(T v)
    {
      foreach (i, w; v) {
        putOne!c(w);
        if (i+1 < v.length) OUT.write(c.delimiter);
      }
      static if (c.newline) OUT.writeln;
      static if (c.flush) OUT.flush();
      static if (c.exit) exit(0);
    }
    void putOne(PutConf c, T)(T v)
    {
      static if (isInputRange!T && !isSomeString!T) putRange!c(v);
      else static if (isFloatingPoint!T) OUT.write(format(c.floatFormat, v));
      else static if (hasMember!(T, "fprint")) v.fprint(OUT);
      else OUT.write(v);
    }
    void putRange(PutConf c, T)(T v)
    {
      auto w = v;
      while (!w.empty) {
        putOne!c(w.front); w.popFront();
        if (!w.empty) OUT.write(c.delimiter);
      }
    }
  }
}