#include <bits/stdc++.h>
//#define int long long
#define ls(s) (s << 1)
#define rs(s) (s << 1 | 1)
#define endl '\n'
using namespace std;
const int N = 2e5 + 5;
const int inf = 1e9 + 10;

int n, q;
int a[N], aid[N];
int last[N];
pair<int, int> qry[N];
int qryid[N];
vector<int> b, MAP;

int tr[N << 2];
inline void build(int p, int pl, int pr){
    if(pl == pr){
        return tr[p] = b[pl], void();
    }
    int mid = pl + pr >> 1;
    build(ls(p), pl, mid);
    build(rs(p), mid + 1, pr);
    tr[p] = tr[ls(p)] + tr[rs(p)];
}
inline void update(int p, int pl, int pr, int idx, int x){
    if(pl == pr){
        return tr[p] = x, void();
    }
    int mid = pl + pr >> 1;
    if(idx <= mid) update(ls(p), pl, mid, idx, x);
    else update(rs(p), mid+1, pr, idx, x);
    tr[p] = tr[ls(p)] + tr[rs(p)];
}
inline int query(int p, int pl, int pr, int l, int r){
    if(l <= pl && pr <= r){
        return tr[p];
    }

    int mid = pl + pr >> 1, res = 0;
    if(l <= mid) res += query(ls(p), pl, mid, l, r);
    if(r > mid) res += query(rs(p), mid+1, pr, l, r);
    return res;
}
inline int findfirst(int p, int pl, int pr, int l, int r, int x){
	if(pl == pr){
		if(tr[p] > x) return pl;
		else return MAP.size();
	}
	int mid = pl + pr >> 1;
	if(tr[ls(p)] > x){
        return findfirst(ls(p), pl, mid, l, r, x);
    }else {
        return findfirst(rs(p), mid+1, pr, l, r, x);
    }
	return MAP.size();
}

inline int getid(int x){
    return lower_bound(MAP.begin(), MAP.end(), x) - MAP.begin();
}
map<int, int> mp;

#define lowbit(x) (x & -x)
int T[N << 1];
inline void add(int x, int d){
    for(int i=x;i<=MAP.size()+1;i+=lowbit(i)){
        T[i] += d;
    }
}
inline int gsum(int x){
    int res = 0;
    for(int i=x;i;i-=lowbit(i)){
        res += T[i];
    }
    return res;
}

signed main(){
    cin.tie(0)->ios::sync_with_stdio(0);
    cin >> n >> q;
    MAP.push_back(-1);
    for(int i=1;i<=n;i++){
        cin >> a[i];
        if(a[i] > 0)
            MAP.push_back(a[i]);
    }

    for(int i=1;i<=q;i++){
        cin >> qry[i].first >> qry[i].second;
        if(qry[i].second > 0){
            MAP.push_back(qry[i].second);
        }
    }
    sort(MAP.begin(), MAP.end());
    
    if(n == 1){
    	for(int i=1;i<=q;i++){
    		cout << 1 << endl;
		}
		return 0;
	}
    
    for(int i=1;i<=n;i++){
        if(a[i] > 0){
            if(!mp.count(a[i])){
                aid[i] = getid(a[i]);
                mp[a[i]] = aid[i] + 1;
            }else{
                aid[i] = mp[a[i]];
                mp[a[i]]++;
            }
        }
    }
    for(int i=1;i<=q;i++){
        if(qry[i].second > 0){
            if(!mp.count(qry[i].second)){
                qryid[i] = getid(qry[i].second);
                mp[qry[i].second] = qryid[i] + 1;
            }else{
                qryid[i] = mp[qry[i].second];
                mp[qry[i].second]++;
            }
        }
    }

    b.resize(MAP.size() + 5);
    int neg_sum = 0, neg_num = 0;
    for(int i=1;i<=n;i++){
        if(a[i] > 0){
            b[aid[i]] = a[i];
	        last[i] = aid[i];
	        add(aid[i], 1);
		}else{
            neg_sum += -a[i];
            neg_num++;
        }
    }
    
    int len = (int)MAP.size() - 1;
    build(1,1,len);
    for(int i=1;i<=q;i++){
        int L, R;
        if(a[qry[i].first] <= 0 && qry[i].second <= 0){
        	// neg -> neg
            neg_sum -= -a[qry[i].first];
            a[qry[i].first] = qry[i].second;
            neg_sum += -a[qry[i].first];
        }else if(a[qry[i].first] <= 0 && qry[i].second > 0){
            // neg -> pos
			neg_sum -= -a[qry[i].first];
            neg_num --;
            a[qry[i].first] = qry[i].second;
            last[qry[i].first] = qryid[i];
            update(1,1,len,qryid[i],a[qry[i].first]);
            add(qryid[i], 1);
        }else if(a[qry[i].first] > 0 && qry[i].second <= 0){
            // pos -> neg
			neg_num ++;
            a[qry[i].first] = qry[i].second;
            neg_sum += -a[qry[i].first];
            add(last[qry[i].first], -1);
            update(1,1,len,last[qry[i].first],0);
        }else if(a[qry[i].first] > 0 && qry[i].second > 0){
        	// pos -> pos
            a[qry[i].first] = qry[i].second;
            add(last[qry[i].first], -1);
            update(1,1,len,last[qry[i].first],0);
            last[qry[i].first] = qryid[i];
            add(qryid[i], 1);
            update(1,1,len,qryid[i],a[qry[i].first]);
        }
        
        R = n - neg_num;
        L = findfirst(1,1,len,1,len,neg_sum);
//        if(neg_sum == 0){
//        	L = 0;
//		}
		
//        cout << " findfirst " << L << endl;
        int pos_num = n - neg_num;
        L = pos_num - gsum(L - 1);
//        for(int j=1;j<=n;j++){
//        	cout << a[j] << " \n"[j == n];
//		}
//		for(int j=1;j<=len;j++){
//        	cout << query(1,1,len,j,j) << " \n"[j == len];
//		}
//		for(int j=1;j<=n;j++){
//			cout << last[j] << " \n"[j == n];
//		}
//        cout << L << ", " << R << endl;
//        system("pause");
        cout << R - L + 1 << endl;
    }
    return 0;
}

/*
Input:
3 5
1 2 3
3 4
2 -2
1 -3
3 1
2 1

Output:
1 2 2 2 3

*/