#include <bits/stdc++.h>

using namespace std;

typedef long long ll;
typedef unsigned long long ull;
typedef vector<ll> vl;
typedef pair<ll, ll> pl;
typedef long double ld;

#define mp make_pair
#define pb push_back
#define fi first
#define se second
#define all(v) (v).begin(),(v).end()
#define rall(v) (v).rbegin(),(v).rend()
#define max(a, b) (a>b ? a : b)
#define min(a, b) (a<b ? a : b)
#define FAST ios::sync_with_stdio(0), cin.tie(0),cout.tie(0)


const int N = int(1e6) + 3;
const int MOD = int(1e9) + 7;

int n,m;
string s;
ll h[N];
ll dp[N];
int x,y;

int main() {
    FAST;
    //freopen("easy", "r", stdin);
    cin >> n >> m;
    for(int i=0;i<n;i++){
        cin >> x;
        h[x]++;
    }
    for(int i=0;i<m;i++){
        cin >> x >> y;
        dp[y]++;
    }
    ll ans=0;
    for(int i=2e5;i>=1;i--){
        h[i]+=h[i+1];
        if(dp[i])
            continue;
        ans+=(h[i]);

    }
    cout << ans << endl;

    return 0;
}