//Man always remember love because of romance only!
#pragma GCC optimize("Ofast")
#include<bits/stdc++.h>
using namespace std;
#define int long long
inline int read(){
    int X=0,w=0; char ch=0;
    while(!isdigit(ch)) {w|=ch=='-';ch=getchar();}
    while(isdigit(ch)) X=(X<<3)+(X<<1)+(ch^48),ch=getchar();
    return w?-X:X;
}
inline void write(int x){
	if(x<0) putchar('-'),x=-x;
    if(x>9) write(x/10);
    putchar(x%10+'0');
}
int a[100001];
signed main(){
	int T=read();
	while(T--){
		int n=read(),q=read();
		for(int i=1;i<=n;i++) a[i]=read();
		while(q--){
			int op=read(),l=read(),r=read();
			if(op==1){
				int x=read();
				for(int i=l;i<=r;i++) a[i]=(a[i]<x)?x-a[i]:x+a[i];
			}else{
				int ans=0;
				for(int i=l;i<=r;i++) ans+=a[i];
				write(ans);
				putchar('\n');
			}
		}
	}
	return 0;
}