/*************************************
* author: marvinthang *
* created: 12.01.2024 20:25:24 *
*************************************/
#include <bits/stdc++.h>
using namespace std;
#define fi first
#define se second
#define left ___left
#define right ___right
#define TIME (1.0 * clock() / CLOCKS_PER_SEC)
#define MASK(i) (1LL << (i))
#define BIT(x, i) ((x) >> (i) & 1)
#define __builtin_popcount __builtin_popcountll
#define ALL(v) (v).begin(), (v).end()
#define REP(i, n) for (int i = 0, _n = (n); i < _n; ++i)
#define REPD(i, n) for (int i = (n); i-- > 0; )
#define FOR(i, a, b) for (int i = (a), _b = (b); i < _b; ++i)
#define FORD(i, b, a) for (int i = (b), _a = (a); --i >= _a; )
#define FORE(i, a, b) for (int i = (a), _b = (b); i <= _b; ++i)
#define FORDE(i, b, a) for (int i = (b), _a = (a); i >= _a; --i)
#define scan_op(...) istream & operator >> (istream &in, __VA_ARGS__ &u)
#define print_op(...) ostream & operator << (ostream &out, const __VA_ARGS__ &u)
#ifdef LOCAL
#include "debug.h"
#else
#define file(name) if (fopen(name".inp", "r")) { freopen(name".inp", "r", stdin); freopen(name".out", "w", stdout); }
#define DB(...) 23
#define db(...) 23
#define debug(...) 23
#endif
template <class U, class V> scan_op(pair <U, V>) { return in >> u.first >> u.second; }
template <class T> scan_op(vector <T>) { for (size_t i = 0; i < u.size(); ++i) in >> u[i]; return in; }
template <class U, class V> print_op(pair <U, V>) { return out << '(' << u.first << ", " << u.second << ')'; }
template <size_t i, class T> ostream & print_tuple_utils(ostream &out, const T &tup) { if constexpr(i == tuple_size<T>::value) return out << ")"; else return print_tuple_utils<i + 1, T>(out << (i ? ", " : "(") << get<i>(tup), tup); }
template <class ...U> print_op(tuple<U...>) { return print_tuple_utils<0, tuple<U...>>(out, u); }
template <class Con, class = decltype(begin(declval<Con>()))> typename enable_if <!is_same<Con, string>::value, ostream&>::type operator << (ostream &out, const Con &con) { out << '{'; for (__typeof(con.begin()) it = con.begin(); it != con.end(); ++it) out << (it == con.begin() ? "" : ", ") << *it; return out << '}'; }
// end of template
void process(void) {
int n; cin >> n;
vector <int> a(n); cin >> a;
int q; cin >> q;
vector <long long> pref(n + 1);
auto prepare = [&] {
REP(i, n) pref[i + 1] = pref[i] + a[i];
};
prepare();
while (q--) {
int t, ql, qr; cin >> t >> ql >> qr; --ql;
if (t == 1) {
a[ql] = qr;
prepare();
} else {
stack <int> st;
vector <int> cnt(n + 1);
auto check_interval = [&] (int l, int r) {
long long sum = pref[r] - pref[l + 1];
if (l >= ql && sum >= a[l]) return;
if (r < qr && sum >= a[r]) return;
++cnt[l + 1]; --cnt[r];
};
FOR(i, ql, qr) {
while (!st.empty() && a[st.top()] <= a[i]) st.pop();
check_interval(st.empty() ? ql - 1 : st.top(), i);
st.push(i);
}
while (!st.empty()) st.pop();
FORD(i, qr, ql) {
while (!st.empty() && a[st.top()] < a[i]) st.pop();
check_interval(i, st.empty() ? qr : st.top());
st.push(i);
}
partial_sum(ALL(cnt), cnt.begin());
cout << count(cnt.begin() + ql, cnt.begin() + qr, 0) << '\n';
}
}
}
int main(void) {
ios_base::sync_with_stdio(false); cin.tie(nullptr); // cout.tie(nullptr);
file("fish2");
// int t; cin >> t; while (t--)
process();
// cerr << "Time elapsed: " << TIME << " s.\n";
return (0^0);
}
