#include <bits/stdc++.h>

// #define x first
// #define y second

using namespace std;

typedef double ld;
typedef unsigned long ul;
typedef long long ll;
typedef unsigned long long ull;
typedef pair<ll, ll> pll;

const int maxn = 8e5 + 50;
const ll inf = 0x3f3f3f3f3f3f;
const vector<pll> dxy = {{-1, 0}, {1, 0}, {0, 1}, {0, -1}};

ll a[maxn], b[maxn];
multiset<ll> st;

struct node {
  ll vl, vr;
  ll lp, rp;
  ll cnt, sum;
} tree[maxn];
ll tot = 1;

#define lp(p) tree[p].lp
#define rp(p) tree[p].rp
#define vl(p) tree[p].vl
#define vr(p) tree[p].vr
#define cnt(p) tree[p].cnt
#define sum(p) tree[p].sum

void pushup(ll p) {
  tree[p].cnt = 0, tree[p].sum = 0;
  if (lp(p) != -1)
    tree[p].cnt += tree[lp(p)].cnt, tree[p].sum += tree[lp(p)].sum;
  if (rp(p) != -1)
    tree[p].cnt += tree[rp(p)].cnt, tree[p].sum += tree[rp(p)].sum;
}

void build(ll p, ll pl, ll pr) {
  tree[p] = {
      b[pl], b[pr], -1, -1, 0, 0,
  };
  if (pl == pr) {
    tree[p].cnt = st.count(b[pl]);
    tree[p].sum = b[pl] * tree[p].cnt;
    return;
  }

  ll mid = pl + (pr - pl) / 2;
  tree[p].lp = ++tot, tree[p].rp = ++tot;
  build(lp(p), pl, mid);
  build(rp(p), mid + 1, pr);
  pushup(p);
}

void update(ll p, ll num, ll c) {
  if (tree[p].vl == tree[p].vr) {
    tree[p].cnt += c;
    tree[p].sum = tree[p].cnt * num;
    // pushup(p);
    return;
  }
  ll mid = vl(p) + (vr(p) - vl(p)) / 2;
  if (num <= mid)
    update(lp(p), num, c);
  else
    update(rp(p), num, c);
  pushup(p);
}

node getsum(ll p, ll l, ll r) {
  if (vl(p) >= l && vr(p) <= r) {
    return tree[p];
  }
  node ni = {l, r, -1, -1, 0, 0};

  ll mid = vl(p) + (vr(p) - vl(p)) / 2;
  if (l <= mid) {
    node np = getsum(lp(p), l, r);
    ni.cnt += np.cnt;
    ni.sum += np.sum;
  }
  if (r >= mid + 1) {
    node np = getsum(rp(p), l, r);
    ni.cnt += np.cnt;
    ni.sum += np.sum;
  }
  return ni;
}

ll query(ll sum) {
  ll p = 1;
  // 二分确定右边界 [l,r)
  // 寻找第一个大于sum的位置
  ll l = 1, r = vr(p) + 1;
  while (l < r) {
    ll mid = l + (r - l) / 2;
    if (mid == 0) {
      break;
    }
    node ni = getsum(1, 1, mid);
    if (ni.sum <= sum) {
      l = mid + 1;
    } else {
      r = mid;
    }
  }
  if (l == 1) {
    node nj = getsum(1, l, l);
    if (nj.cnt == 0)
      return 0;
    return sum / (nj.sum / nj.cnt);
  }

  node ni = getsum(1, 1, l - 1);
  ll ret = ni.cnt;

  if (l < vr(p) + 1) {
    node nj = getsum(1, l, l);
    if (nj.cnt != 0)
      ret += (sum - ni.sum) / (nj.sum / nj.cnt);
  }

  return ret;
}

void solve() {
  ll n, q;
  cin >> n >> q;
  st.clear();
  ll sum = 0;
  set<ll> stb;
  for (ll i = 1; i <= n; i++) {
    cin >> a[i];
    if (a[i] > 0) {
      st.insert(a[i]);
      stb.insert(a[i]);
    } else {
      sum += -a[i];
    }
  }

  vector<pll> ve(q);
  for (ll i = 0; i < q; i++) {
    cin >> ve[i].first >> ve[i].second;
    if (ve[i].second > 0) {
      stb.insert(ve[i].second);
    }
  }

  ll nx = 0;
  for (auto i : stb) {
    b[++nx] = i;
  }
  build(1, 1, nx);

  for (ll i = 0; i < q; i++) {
    auto [x, v] = ve[i];
    if (a[x] > 0) {
      update(1, a[x], -1);
    } else {
      sum -= -a[x];
    }
    if (v > 0) {
      update(1, v, 1);
    } else {
      sum += -v;
    }
    cout << query(sum) + 1 << '\n';
    a[x] = v;
  }
}

void init() {
  // init_primes();
}

int main(void) {
  ios::sync_with_stdio(false);
  cin.tie(0);
  init();
  int _t = 1;
  // cin >> _t;
  // cin.get();
  while (_t--)
    solve();

  return 0;
}