#include <cassert>
#include <cmath>
#include <cstdint>
#include <cstdio>
#include <cstdlib>
#include <cstring>
#include <algorithm>
#include <bitset>
#include <complex>
#include <deque>
#include <functional>
#include <iterator>
#include <iostream>
#include <limits>
#include <map>
#include <numeric>
#include <queue>
#include <random>
#include <set>
#include <sstream>
#include <string>
#include <unordered_map>
#include <unordered_set>
#include <utility>
#include <vector>
#include <stack>

#ifdef LOCAL
template <class T, size_t size = std::tuple_size<T>::value> std::string to_debug(T, std::string s = "") requires(not std::ranges::range<T>);
std::string to_debug(auto x) requires requires(std::ostream& os) { os << x; } { return static_cast<std::ostringstream>(std::ostringstream() << x).str(); }
std::string to_debug(std::ranges::range auto x, std::string s = "") requires(not std::is_same_v<decltype(x), std::string>) {
  for (auto xi : x) { s += ", " + to_debug(xi); }
  return "[" + s.substr(s.empty() ? 0 : 2) + "]";
}
template <class T, size_t size> std::string to_debug(T x, std::string s) requires(not std::ranges::range<T>) {
  [&]<size_t... I>(std::index_sequence<I...>) { ((s += ", " + to_debug(get<I>(x))), ...); }(std::make_index_sequence<size>());
  return "(" + s.substr(s.empty() ? 0 : 2) + ")";
}
#define debug(...) std::cerr << __LINE__ << ": (" #__VA_ARGS__ ") = " << to_debug(std::tuple(__VA_ARGS__)) << "\n"
#else
#define debug(x...)
#endif

using i64 = long long;

template <class T>
struct Discreter {
    std::vector<T> elementSet;

    Discreter(const std::vector<T> &a) : elementSet(a) {
        std::sort(begin(elementSet), end(elementSet));
        elementSet.erase(std::unique(begin(elementSet), end(elementSet)), end(elementSet));
    }

    std::vector<int> process(const std::vector<T> &a) const {//get the dicreter arr
        std::vector<int> discRes(a.size());

        for (int i = 0; i < a.size(); i++) {
            discRes[i] = query(a[i]);
        }

        return discRes;
    }

    int query(const T &x) const {
        auto it = std::lower_bound(begin(elementSet), end(elementSet), x);
        // assert(it != end(elementSet) and *it == x);

        return it - begin(elementSet);
    }

    int queryUpperBound(const T &x) const {
        auto it = std::upper_bound(begin(elementSet), end(elementSet), x);

        return it - begin(elementSet);
    }

    T queryInv(int index) const {
        return elementSet[index];
    }

    int size() {
        return elementSet.size();
    }
};

template<class Info>
struct SegmentTree {
    int n;
    std::vector<Info> info;
    SegmentTree() : n(0) {}
    SegmentTree(int n_, Info v_ = Info()) {
        init(n_, v_);
    }
    template<class T>
    SegmentTree(std::vector<T> init_) {
        init(init_);
    }
    void init(int n_, Info v_ = Info()) {
        init(std::vector(n_, v_));
    }
    template<class T>
    void init(std::vector<T> init_) {
        n = init_.size();
        info.assign(4 << std::__lg(n), Info());
        std::function<void(int, int, int)> build = [&](int p, int l, int r) {
            if (r - l == 1) {
                info[p] = init_[l];
                return;
            }
            int m = (l + r) / 2;
            build(2 * p, l, m);
            build(2 * p + 1, m, r);
            pull(p);
        };
        build(1, 0, n);
    }
    void pull(int p) {
        info[p] = info[2 * p] + info[2 * p + 1];
    }
    void modify(int p, int l, int r, int x, const Info &v) {
        if (r - l == 1) {
            info[p] = v;
            return;
        }
        int m = (l + r) / 2;
        if (x < m) {
            modify(2 * p, l, m, x, v);
        } else {
            modify(2 * p + 1, m, r, x, v);
        }
        pull(p);
    }
    void modify(int p, const Info &v) {
        modify(1, 0, n, p, v);
    }
    Info rangeQuery(int p, int l, int r, int x, int y) {
        if (l >= y || r <= x) {
            return Info();
        }
        if (l >= x && r <= y) {
            return info[p];
        }
        int m = (l + r) / 2;
        return rangeQuery(2 * p, l, m, x, y) + rangeQuery(2 * p + 1, m, r, x, y);
    }
    Info rangeQuery(int l, int r) {
        return rangeQuery(1, 0, n, l, r);
    }
    template<class F>
    int findFirst(int p, int l, int r, int x, int y, F &&pred) {
        if (l >= y || r <= x) {
            return -1;
        }
        if (l >= x && r <= y && !pred(info[p])) {
            return -1;
        }
        if (r - l == 1) {
            return l;
        }
        int m = (l + r) / 2;
        int res = findFirst(2 * p, l, m, x, y, pred);
        if (res == -1) {
            res = findFirst(2 * p + 1, m, r, x, y, pred);
        }
        return res;
    }
    template<class F>
    int findFirst(int l, int r, F &&pred) {
        return findFirst(1, 0, n, l, r, pred);
    }
    template<class F>
    int findLast(int p, int l, int r, int x, int y, F &&pred) {
        if (l >= y || r <= x) {
            return -1;
        }
        if (l >= x && r <= y && !pred(info[p])) {
            return -1;
        }
        if (r - l == 1) {
            return l;
        }
        int m = (l + r) / 2;
        int res = findLast(2 * p + 1, m, r, x, y, pred);
        if (res == -1) {
            res = findLast(2 * p, l, m, x, y, pred);
        }
        return res;
    }
    template<class F>
    int findLast(int l, int r, F &&pred) {
        return findLast(1, 0, n, l, r, pred);
    }
};
#define int long long

struct Info {
    i64 sum{};
};

Info operator + (const Info& a, const Info& b) {return {a.sum + b.sum};}

void solve()
{
    int n, Q; std::cin >> n >> Q; std::vector<int> a(n); for (auto& ai : a) {std::cin >> ai;}
    SegmentTree<Info> T(n + Q);
    std::vector<int> positives; for (auto& ai : a) {positives.push_back(ai);}
    std::vector<std::pair<int, int>> querires(Q); for (auto&[x, v] : querires) {
        std::cin >> x >> v; --x; if (v > 0) {positives.push_back(v);} 
    }

    Discreter discreter(positives);

    std::map<int, int> cnt; for (auto& ai : a) {cnt[ai] += 1;}
    for (auto&[ai, c] : cnt) {T.modify(discreter.query(ai), {c * ai});}

    i64 negative_abs_sum{}; 
    std::multiset<int> S; for (auto& ai : a) if (ai > 0) {S.insert(discreter.query(ai));}

    for (auto&[x, v] : querires) {
        //当前这个下标上对应的数的权值线段树的值
        //不一定就是单点赋值，而是把修改前的那个点减去一次a[x]， 然后在新的v对应的上面加一次a=v
        
        if (a[x] <= 0) {negative_abs_sum -= std::abs(a[x]);}
        else {
            int id{discreter.query(a[x])};
            S.extract(id);
            T.modify(id, {T.rangeQuery(id, id + 1).sum - a[x]});
        }
        if (v <= 0) {
            negative_abs_sum += std::abs(v);
        } else {
            int id{discreter.query(v)};
            T.modify(id, {T.rangeQuery(id, id + 1).sum + v});
            S.insert(id);
        }

        a[x] = v; 

        int k{T.findFirst(0, n + Q, [&](auto f) {return f.sum >= negative_abs_sum;})};

        if (k == -1) {std::cout << std::size(S) + 1 << "\n"; continue ;}


        i64 pre_sum{T.rangeQuery(0, k).sum};

        int k_take{}, pre_take{(int)(std::distance(S.begin(), S.lower_bound(k)))};

        {//第二遍找k取了多少个
            auto k_sum{T.rangeQuery(k, k + 1).sum};
            auto k_val{discreter.queryInv(k)};
            i64 lo{1}, hi{k_sum / k_val}; while (lo <= hi) {
                i64 mid{(lo + hi) / 2}; 
                (pre_sum + mid * k_val > negative_abs_sum) ? 
                hi = mid - 1, k_take = mid : lo = mid + 1;
            }
        }

        std::cout << k_take + pre_take << "\n";

    }

}
 
signed main()
{
    std::cin.tie(nullptr)->sync_with_stdio(false);
    int _{1};
#ifdef tests
    std::cin >> _;
#endif
    while(_--) solve();
    return 0;
}