import sys

sys.setrecursionlimit(10**6)
int1 = lambda x: int(x)-1
p2D = lambda x: print(*x, sep="\n")
def II(): return int(sys.stdin.buffer.readline())
def FI(): return float(sys.stdin.buffer.readline())
def MI(): return map(int, sys.stdin.buffer.readline().split())
def MF(): return map(float, sys.stdin.buffer.readline().split())
def MI1(): return map(int1, sys.stdin.buffer.readline().split())
def LI(): return list(map(int, sys.stdin.buffer.readline().split()))
def LI1(): return list(map(int1, sys.stdin.buffer.readline().split()))
def LLI(rows_number): return [LI() for _ in range(rows_number)]
def LLI1(rows_number): return [LI1() for _ in range(rows_number)]
def BI(): return sys.stdin.buffer.readline().rstrip()
def SI(): return sys.stdin.buffer.readline().rstrip().decode()
dij = [(0, 1), (-1, 0), (0, -1), (1, 0)]
inf = 10**16
md = 998244353
# md = 10**9+7

class BitSum:
    def __init__(self, n):
        self.n = n+1
        self.table = [0]*self.n

    def add(self, i, x):
        i += 1
        while i < self.n:
            self.table[i] += x
            i += i & -i

    def sum(self, i):
        if i<0:return 0
        i += 1
        res = 0
        while i > 0:
            res += self.table[i]
            i -= i & -i
        return res

    def pos(self, x):
        idx = 0
        for lv in range((self.n-1).bit_length()-1, -1, -1):
            mid = idx+(1 << lv)
            if mid >= self.n: continue
            if self.table[mid] < x:
                x -= self.table[mid]
                idx += 1 << lv
        return idx

# 要素が[0,10**6]のとき使える
class Cset:
    def __init__(self, mx=10**6):
        self.mx = mx
        self.size = 0
        self.bit = BitSum(self.mx+1)
        self.nums = [False]*(self.mx+1)

    def __repr__(self):
        return " ".join(str(self[i]) for i in range(self.size))

    def insert(self, a):
        if a < 0 or a > self.mx or self.nums[a]: return False
        self.size += 1
        self.bit.add(a, 1)
        self.nums[a] = True
        return True

    def remove(self, value):
        if value < 0 or value > self.mx or not self.nums[value]: return False
        self.size -= 1
        self.bit.add(value, -1)
        self.nums[value] = False
        return True

    def erase(self, index):
        i = index
        if i >= self.size or i < -self.size: return False
        return self.remove(self[i])

    def __getitem__(self, i):
        if i >= self.size or i < -self.size: return -1
        if i < 0: i = self.size+i+1
        else: i += 1
        return self.bit.pos(i)

    def __contains__(self, item):
        return self.nums[item]

    def __len__(self):
        return self.size

    def bisect_left(self, a):
        if a < 0 or a > self.mx: return -1
        if a == 0: return 0
        return self.bit.sum(a-1)

    def bisect_right(self, a):
        if a < 0 or a > self.mx: return -1
        return self.bit.sum(a)

n, q = MI()
aa = LI()
bit = BitSum(n+1)
st = Cset()
st.insert(n)
for i, a in enumerate(aa):
    bit.add(i, a)
    st.insert(i)

for _ in range(q):
    t, x = MI1()
    if t == 0:
        st.remove(x+1)
    if t == 1:
        st.insert(x+1)
    if t == 2:
        bit.add(x, 1)
    if t == 3:
        i = st.bisect_right(x)
        l, r = st[i-1], st[i]
        print(bit.sum(r-1)-bit.sum(l-1))