#include <bits/stdc++.h>
using namespace std;
typedef long long ll;
typedef pair<ll, ll> l_l;
typedef pair<int, int> i_i;
template<class T>
inline bool chmax(T &a, T b) {
    if(a < b) {
        a = b;
        return true;
    }
    return false;
}

template<class T>
inline bool chmin(T &a, T b) {
    if(a > b) {
        a = b;
        return true;
    }
    return false;
}

const long long INF = 1e18;
//const ll mod = 1000000007;

int main() {
    cin.tie(0);
    ios::sync_with_stdio(false);
    ll N, M;
    cin >> N >> M;
    assert(1 <= N and N <= 10000);
    assert(0 <= M and M <= 100000);
    for(int i = 0; i < N; i++) {
        ll B;
        cin >> B;
        assert(-1000000000 <= B and B <= 1000000000);
    }
    set<l_l> st;
    for(int i = 0; i < M; i++) {
        ll l, r;
        cin >> l >> r;
        assert(1 <= l and l <= r and r <= N);
        l_l tmp = {l, r};
        assert(st.find(tmp) == st.end());
        st.insert(tmp);
    }
    return 0;
}