using System;
using System.Collections;
using System.Collections.Generic;
using System.Linq;
using System.Text;

class TEST{
	static void Main(){
		Sol mySol =new Sol();
		mySol.Solve();
	}
}

class Sol{
	public void Solve(){
		
		int M = 334;
		int P = 300;
		long[] A = new long[M * P];
		for(int i=0;i<N;i++) A[i] = AA[i];
		
		long[] pSum = new long[M];
		bool[] pJoin = new bool[M];
		bool[] Join = new bool[M * P];
		for(int q = 0; q < Q; q++){
			
			int x = Query[q][1];
			int t = Query[q][0];
			switch(t){
				
				case 1:{
					Join[x] = true;
					
					int p = x / P;
					bool chk = true;
					long sum = A[p * P];
					for(int j=0;j<P-1;j++){
						chk &= Join[p * P + j];
						sum += A[p * P + j + 1];
					}
					if(chk){
						pJoin[p] = true;
						pSum[p] = sum;
					}
				} break;
				
				case 2: {
					Join[x] = false;
					int p = x / P;
					pJoin[p] = false;
					
				} break;
				
				case 3: {
					A[x]++;
					int p = x / P;
					if(pJoin[p]){
						pSum[p]++;
					}
				} break;
				
				case 4: {
					
					long sum = 0;
					for(int j=x;j<N;j++){
						if(j % P == 0 && pJoin[j / P]){
							sum += pSum[j / P];
							j += P - 1;
							if(Join[j]) continue;
							break;
						} else {
							sum += A[j];
							if(Join[j]){
								continue;
							} else {
								break;
							}
						}
					}
					
					for(int j=x-1;j>=0;j--){
						if(!Join[j]) break;
						if(j % P == P - 1 && pJoin[j / P]){
							sum += pSum[j / P];
							j -= P;
						} else {
							sum += A[j];
						}
					}
					
					Console.WriteLine(sum);
				} break;
				
				
			}
			//Console.WriteLine("{0} : done",t);
			
		}
	}
	int N;
	int Q;
	long[] AA;
	int[][] Query;
	public Sol(){
		var d = ria();
		N = d[0]; Q = d[1];
		AA = rla();
		Query = new int[Q][];
		for(int i=0;i<Q;i++) {
			Query[i] = ria();
			Query[i][1]--;
		}
		
	}

	static String rs(){return Console.ReadLine();}
	static int ri(){return int.Parse(Console.ReadLine());}
	static long rl(){return long.Parse(Console.ReadLine());}
	static double rd(){return double.Parse(Console.ReadLine());}
	static String[] rsa(char sep=' '){return Console.ReadLine().Split(sep);}
	static int[] ria(char sep=' '){return Array.ConvertAll(Console.ReadLine().Split(sep),e=>int.Parse(e));}
	static long[] rla(char sep=' '){return Array.ConvertAll(Console.ReadLine().Split(sep),e=>long.Parse(e));}
	static double[] rda(char sep=' '){return Array.ConvertAll(Console.ReadLine().Split(sep),e=>double.Parse(e));}
}