class LazySegmentTree():
    __slots__ = ["merge","merge_unit","operate","merge_operate","operate_unit","n","data","lazy"]
    def __init__(self,n,init,merge,merge_unit,operate,merge_operate,operate_unit):
        self.merge=merge
        self.merge_unit=merge_unit
        self.operate=operate
        self.merge_operate=merge_operate
        self.operate_unit=operate_unit

        self.n=(n-1).bit_length()
        self.data=[merge_unit for i in range(1<<(self.n+1))]
        self.lazy=[operate_unit for i in range(1<<(self.n+1))]
        if init:
            for i in range(n):
                self.data[2**self.n+i]=init[i]
            for i in range(2**self.n-1,0,-1):
                self.data[i]=self.merge(self.data[2*i],self.data[2*i+1])

    def propagate(self,v):
        ope = self.lazy[v]
        if ope == self.operate_unit:
            return
        self.lazy[v]=self.operate_unit
        self.data[(v<<1)]=self.operate(self.data[(v<<1)],ope)
        self.data[(v<<1)+1]=self.operate(self.data[(v<<1)+1],ope)
        self.lazy[v<<1]=self.merge_operate(self.lazy[(v<<1)],ope)
        self.lazy[(v<<1)+1]=self.merge_operate(self.lazy[(v<<1)+1],ope)

    def propagate_above(self,i):
        m=i.bit_length()-1
        for bit in range(m,0,-1):
            v=i>>bit
            self.propagate(v)

    def remerge_above(self,i):
        while i:
            c = self.merge(self.data[i],self.data[i^1])
            i>>=1
            self.data[i]=self.operate(c,self.lazy[i])

    def update(self,l,r,x):
        l+=1<<self.n
        r+=1<<self.n
        l0=l//(l&-l)
        r0=r//(r&-r)-1
        while l<r:
            if l&1:
                self.data[l]=self.operate(self.data[l],x)
                self.lazy[l]=self.merge_operate(self.lazy[l],x)
                l+=1
            if r&1:
                self.data[r-1]=self.operate(self.data[r-1],x)
                self.lazy[r-1]=self.merge_operate(self.lazy[r-1],x)
            l>>=1
            r>>=1
        self.remerge_above(l0)
        self.remerge_above(r0)

    def query(self,l,r):
        l+=1<<self.n
        r+=1<<self.n
        l0=l//(l&-l)
        r0=r//(r&-r)-1
        self.propagate_above(l0)
        self.propagate_above(r0)
        res=self.merge_unit
        while l<r:
            if l&1:
                res=self.merge(res,self.data[l])
                l+=1
            if r&1:
                res=self.merge(res,self.data[r-1])
            l>>=1
            r>>=1
        return res

import sys

input = sys.stdin.readline

N = int(input())
a = list(map(int,input().split()))

LST = LazySegmentTree(N,a,min,10**18,lambda x,y:x+y,lambda x,y:x+y,0)

for _ in range(int(input())):
    k,l,r,c = map(int,input().split())
    l-=1
    if k==1:
        LST.update(l,r,c)
    else:
        print(LST.query(l,r))