#pragma GCC optimize("O3")
#include <bits/stdc++.h>
#define ll long long
#define rep(i,n) for(ll i=0;i<(n);i++)
#define pll pair<ll,ll>
#define pii pair<int,int>
#define pq priority_queue
#define pb push_back
#define eb emplace_back
#define fi first
#define se second
#define endl '\n'
#define ios ios_base::sync_with_stdio(0),cin.tie(0),cout.tie(0);
#define lb(c,x) distance(c.begin(),lower_bound(all(c),x))
#define ub(c,x) distance(c.begin(),upper_bound(all(c),x))

using namespace std;

const ll INF=1e18;

struct LazySegmentTree{
private:
    ll n;
    vector<ll> node, lazy;
public:
    LazySegmentTree(vector<ll> v){
        ll sz=(ll)v.size();
        n=1;
        while(n<sz) n*=2;
        node.resize(2*n-1);
        lazy.resize(2*n-1,0);
        rep(i,sz) node[i+n-1]=v[i];
        for(ll i=n-2;i>=0;i--) node[i]=min(node[2*i+1],node[2*i+2]);
    }
    void eval(ll k,ll l,ll r){
        if(lazy[k]!=0){
            node[k]+=lazy[k];
            if(r-l>1){
                lazy[2*k+1]+=lazy[k];
                lazy[2*k+2]+=lazy[k];
            }
            lazy[k]=0;
        }
    }
    void add(ll a,ll b,ll x,ll k=0,ll l=0,ll r=-1){
        if(r<0) r=n;
        eval(k,l,r);
        if(b<=l || r<=a) return;
        if(a<=l && r<=b){
            lazy[k]+=x;
            eval(k,l,r);
        }
        else{
            add(a,b,x,2*k+1,l,(l+r)/2);
            add(a,b,x,2*k+2,(l+r)/2,r);
            node[k]=min(node[2*k+1],node[2*k+2]);
        }
    }
    ll getmin(ll a,ll b,ll k=0,ll l=0,ll r=-1){
        if(r<0) r=n;
        if(b<=l || r<=a) return INF;
        eval(k,l,r);
        if(a<=l && r<=b) return node[k];
        ll vl=getmin(a,b,2*k+1,l,(l+r)/2);
        ll vr=getmin(a,b,2*k+2,(l+r)/2,r);
        return min(vl,vr);
    }
};

int main(){
    ll n;
    cin >> n;
    vector<ll> a(n);
    rep(i,n){
        cin >> a[i];
    }
    LazySegmentTree seg=LazySegmentTree(a);
    ll q;
    cin >> q;
    rep(i,q){
        ll k,l,r,c;
        cin >> k >> l >> r >> c;
        l--;
        if(k==1){
            seg.add(l,r,c);
        }
        else{
            cout << seg.getmin(l,r) << endl;
        }
    }
    return 0;
}