#define here cerr<<"===========================================\n"
#define dbg(x) cerr<<#x<<": "<<x<<endl;
#include "bits/stdc++.h"
//#include <ext/pb_ds/tree_policy.hpp>
//#include <ext/pb_ds/assoc_container.hpp>
#define ld double
#define ll long long
#define llinf 100000000000000000LL // 10^17
#define pb push_back
#define popb pop_back
#define fi first
#define sc second
#define endl '\n'
#define pll pair<ll,ll>
#define pld pair<ld,ld>
#define all(a) a.begin(),a.end()
#define ceri(a,l,r) {cerr<<#a<<": ";for(ll i_ = l;i_<=r;i_++) cerr<<a[i_]<< " ";cerr<<endl;}
#define cer(a) {cerr<<#a<<": ";for(ll x_ : a) cerr<<x_<< " ";cerr<<endl;}
#define daj_mi_malo_vremena ios_base::sync_with_stdio(false);cerr.tie(0);cout.tie(0);cin.tie(0);
using namespace std;
#define maxn 250005
ll n,m,q;
vector<pll> tq[maxn],t2q[maxn],Q[maxn];
ll tip[maxn];
pll t[2*maxn];
ll t2[2*maxn];
ll ls[2*maxn],rs[2*maxn],tsz = 0,root = 0;
ll ans[maxn];
ll c[maxn];
pll mrg(pll a,pll b){
return {a.fi+b.fi,max(b.sc,b.fi+a.sc)};
}
void init(ll &v,ll tl,ll tr){
if(!v) v = ++tsz;
if(tl==tr){return;}
ll mid = (tl+tr)/2;
init(ls[v],tl,mid);
init(rs[v],mid+1,tr);
}
void upd(ll v,ll tl,ll tr,ll i,ll x){
if(tl==tr){t[v] = {x,max(0LL,x)};return;}
ll mid = (tl+tr)/2;
if(i<=mid) upd(ls[v],tl,mid,i,x);
else upd(rs[v],mid+1,tr,i,x);
t[v] = mrg(t[ls[v]],t[rs[v]]);
}
pll get(ll v,ll tl,ll tr,ll l,ll r){
if(l>r||tl>tr||tl>r||tr<l) return {0LL,0LL};
if(tl>=l&&tr<=r) return t[v];
ll mid = (tl+tr)/2;
return mrg(get(ls[v],tl,mid,l,r),get(rs[v],mid+1,tr,l,r));
}
void upd2(ll v,ll tl,ll tr,ll i,ll x){
if(tl==tr){t2[v] = x;return;}
ll mid = (tl+tr)/2;
if(i<=mid) upd2(ls[v],tl,mid,i,x);
else upd2(rs[v],mid+1,tr,i,x);
t2[v] = t2[ls[v]] + t2[rs[v]];
}
ll sum(ll v,ll tl,ll tr,ll l,ll r){
if(l>r||tl>tr||tl>r||tr<l) return 0;
if(tl>=l&&tr<=r) return t2[v];
ll mid = (tl+tr)/2;
return sum(ls[v],tl,mid,l,r) + sum(rs[v],mid+1,tr,l,r);
}
ll walk(ll v,ll tl,ll tr,ll x){
if(tl==tr){
if(t2[v]<x) return tl;
return tl-1;
}
ll mid = (tl+tr)/2;
if(t2[ls[v]]>x) return walk(ls[v],tl,mid,x);
return walk(rs[v],mid+1,tr,x-t2[ls[v]]);
}
void tc(){
cin >> n >> m >> q;
init(root,1,q);
for(ll i = 1;i<=q;i++){
cin >> tip[i];
if(tip[i]==1){
ll l,r,x;
cin >> l >> r >> c[i] >> x;
tq[l].pb({i,x});
tq[r+1].pb({i,0});
t2q[l].pb({i,x});
t2q[r+1].pb({i,0});
}else if(tip[i]==2){
ll l,r,x; cin >> l >> r >> x;
tq[l].pb({i,-x});
tq[r+1].pb({i,0});
}else{
ll x,y;
cin >> x >> y;
Q[x].pb({i,y});
}
}
for(ll i = 1;i<=n;i++){
for(pll p : tq[i]) upd(1,1,q,p.fi,p.sc);
for(pll p : t2q[i]) upd2(1,1,q,p.fi,p.sc);
for(pll p : Q[i]){
ll id = p.fi;
ll x = get(1,1,q,1,id).sc,y = p.sc;
if(x<y) ans[id] = 0;
else{
ll d = sum(1,1,q,1,id) - x + y;
ll j = walk(1,1,q,d-1) + 1;
ans[id] = c[j];
}
}
}
for(ll i = 1;i<=q;i++){
if(tip[i]==3) cout<<ans[i]<<endl;
}
}
int main(){
daj_mi_malo_vremena
int t; t = 1;
while(t--){
tc();
}
return 0;
}
/**
3 5 7
1 2 3 5 2
1 1 2 2 4
3 2 3
2 1 3 3
3 1 2
1 2 3 4 2
3 3 2
3 4 7
1 1 2 1 1
1 1 3 4 1
2 2 3 1
2 1 3 1
1 1 2 2 1
3 1 1
3 3 2
183326 218318 22
1 106761 160918 151683 574906362
3 68709 1
1 29240 156379 22166 957318472
1 14054 181502 82845 97183925
2 112033 122908 587808357
2 57819 160939 215041262
3 36674 524274467
1 35854 69866 32334 322730299
1 1384 7230 115069 454256926
1 44192 158235 8750 84192710
3 54457 1077490708
2 10592 110384 979714505
2 44594 79244 311724477
3 160965 97183926
1 88748 101697 39148 373927458
3 41166 58039001
1 91501 137591 205480 958877326
2 77775 169655 135756956
1 12497 57047 60918 15666764
1 47839 51716 144688 732270998
3 114514 774994894
3 48645 169986425
**/
