#include <bits/stdc++.h>
using namespace std;
#define fi first
#define se second
#define mp make_pair
#define pb push_back
#define all(a) (a).begin(), (a).end()
using ll = long long;
using ull = unsigned long long;
using pii = pair<int, int>;
using pil = pair<int, ll>;
using pli = pair<ll, int>;
using pll = pair<ll, ll>;
using ld = long double;
template<typename T1, typename T2> bool chkmin(T1& x, T2 y) {
return y < x ? (x = y, true) : false;
}
template<typename T1, typename T2> bool chkmax(T1& x, T2 y) {
return y > x ? (x = y, true) : false;
}
void debug_out() {
cerr << endl;
}
template<typename T1, typename... T2> void debug_out(T1 A, T2... B) {
cerr << ' ' << A;
debug_out(B...);
}
template<typename T> void mdebug_out(T* a, int n) {
for (int i = 0; i < n; ++i) cerr << a[i];
cerr << endl;
}
template<typename T> ostream& operator << (ostream& stream, const vector<T>& v) {
for (auto& x : v) {
stream << x << ' ';
}
return stream;
}
template<typename T1, typename T2> ostream& operator << (ostream& stream, const pair<T1, T2>& p) {
return stream << p.first << ' ' << p.second;
}
#ifdef DEBUG
#define debug(...) cerr << "[" << #__VA_ARGS__ << "]:", debug_out(__VA_ARGS__)
#define mdebug(a, n) cerr << #a << ": ", mdebug_out(a, n)
#else
#define debug(...) 1337
#define mdebug(a, n) 1337
#endif
const ll INF64 = 1e18;
const int maxN = 250005;
int N, M, Q;
int VL[maxN], VR[maxN], VM[maxN];
vector<int> qb[maxN];
namespace sgt1 {
const int logN = 18;
const int N = 1 << logN;
struct Node {
ll sz;
ll min1, min2;
ll lazy_all, lazy_min;
Node() {
sz = 0;
min1 = 0;
min2 = +INF64;
lazy_all = lazy_min = 0;
}
} t[2 * N];
void upd(int v) {
t[v].min1 = t[v << 1].min1;
t[v].min2 = t[v << 1].min2;
if (t[v << 1 | 1].min1 < t[v].min1) {
t[v].min2 = t[v].min1;
t[v].min1 = t[v << 1 | 1].min1;
chkmin(t[v].min2, t[v << 1 | 1].min2);
} else if (t[v << 1 | 1].min1 > t[v].min1) {
chkmin(t[v].min2, t[v << 1 | 1].min1);
} else {
chkmin(t[v].min2, t[v << 1 | 1].min2);
}
}
void apply1(int v, ll d) {
t[v].sz += d;
}
void apply2_all(int v, ll d) {
t[v].min1 += d;
t[v].min2 += d;
t[v].lazy_all += d;
}
void apply2_min(int v, ll d) {
t[v].min1 += d;
t[v].lazy_min += d;
}
void push(int v) {
for (int u : {v << 1, v << 1 | 1}) {
if (t[v].sz) {
apply1(u, t[v].sz);
}
if (t[v].lazy_all) {
apply2_all(u, t[v].lazy_all);
}
if (t[v].lazy_min && t[v].min1 - t[v].lazy_min == t[u].min1) {
apply2_min(u, t[v].lazy_min);
}
}
t[v].sz = t[v].lazy_all = t[v].lazy_min = 0;
}
void add1(int v, int vl, int vr, int l, int r, ll d) {
if (l > r || vr < l || r < vl) return;
if (l <= vl && vr <= r) {
apply1(v, d);
apply2_all(v, d);
return;
}
int vm = (vl + vr) >> 1;
push(v);
add1(v << 1, vl, vm, l, r, d);
add1(v << 1 | 1, vm + 1, vr, l, r, d);
upd(v);
}
void add2(int v, int vl, int vr, int l, int r, ll d) {
if (l > r || vr < l || r < vl) return;
if (l <= vl && vr <= r) {
apply2_all(v, d);
return;
}
int vm = (vl + vr) >> 1;
push(v);
add2(v << 1, vl, vm, l, r, d);
add2(v << 1 | 1, vm + 1, vr, l, r, d);
upd(v);
}
void umax0(int v, int vl, int vr, int l, int r) {
if (l > r || vr < l || r < vl || t[v].min1 >= 0) return;
if (l <= vl && vr <= r && t[v].min2 > 0) {
apply2_min(v, -t[v].min1);
return;
}
int vm = (vl + vr) >> 1;
push(v);
umax0(v << 1, vl, vm, l, r);
umax0(v << 1 | 1, vm + 1, vr, l, r);
upd(v);
}
pll gt(int v, int vl, int vr, int i) {
if (vl == vr) {
return {t[v].sz, t[v].lazy_all + t[v].lazy_min};
}
int vm = (vl + vr) >> 1;
push(v);
if (i <= vm) {
return gt(v << 1, vl, vm, i);
} else {
return gt(v << 1 | 1, vm + 1, vr, i);
}
}
}
struct Query1 {
int l, r, c, k;
Query1() {}
void read() {
cin >> l >> r >> c >> k;
}
} qr1[maxN];
int qr1_t[maxN];
struct Query3 {
int i;
ll k;
} qr3[maxN];
int qr3_t[maxN];
namespace fnw {
ll f[maxN];
void reset() {
fill(f, f + N + 1, 0);
}
void add(int i, ll d) {
for (; i <= N; i += i & -i) {
f[i] += d;
}
}
void add(int l, int r, ll d) {
add(l, d);
add(r + 1, -d);
}
ll gt(int i) {
ll ans = 0;
for (; i >= 1; i -= i & -i) {
ans += f[i];
}
return ans;
}
}
int32_t main() {
#ifdef DEBUG
freopen("in", "r", stdin);
#endif
ios::sync_with_stdio(0);
cin.tie(0);
cin >> N >> M >> Q;
int T = 0;
int Q1 = 0;
for (int qi = 0; qi < Q; ++qi) {
int tp;
cin >> tp;
if (tp == 1) {
auto& q = qr1[Q1];
q.read();
qr1_t[Q1++] = T;
sgt1::add1(1, 1, N, q.l, q.r, q.k);
} else if (tp == 2) {
int l, r, k;
cin >> l >> r >> k;
sgt1::add2(1, 1, N, l, r, -k);
sgt1::umax0(1, 1, N, l, r);
} else {
auto& q = qr3[T];
cin >> q.i >> q.k;
--q.k;
qr3_t[T++] = Q1;
auto f = sgt1::gt(1, 1, N, q.i);
q.k += f.fi - f.se;
}
}
for (int i = 0; i < T; ++i) {
VL[i] = -1;
VR[i] = qr3_t[i];
}
while (true) {
bool found = false;
for (int i = 0; i < T; ++i) {
if (VR[i] - VL[i] > 1) {
found = true;
VM[i] = (VL[i] + VR[i]) / 2;
qb[VM[i]].push_back(i);
}
}
if (!found) {
break;
}
fnw::reset();
for (int j = 0; j < Q1; ++j) {
auto& q = qr1[j];
fnw::add(q.l, q.r, q.k);
for (int i : qb[j]) {
if (fnw::gt(qr3[i].i) <= qr3[i].k) {
VL[i] = VM[i];
} else {
VR[i] = VM[i];
}
}
qb[j].clear();
}
}
for (int i = 0; i < T; ++i) {
if (VR[i] == qr3_t[i]) {
cout << "0\n";
} else {
cout << qr1[VR[i]].c << '\n';
}
}
return 0;
}
