This submission is migrated from previous version of oj.uz, which used different machine for grading. This submission may have different result if resubmitted.
#include <bits/stdc++.h>
using namespace std;
#define file ""
#define mp make_pair
#define fi first
#define se second
#define all(x) x.begin(), x.end()
#define getbit(x, i) (((x) >> (i)) & 1)
#define bit(x) (1LL << (x))
#define popcount __builtin_popcountll
mt19937_64 rd(chrono::steady_clock::now().time_since_epoch().count());
int rand(int l, int r) {
return l + rd() % (r - l + 1);
}
const int N = 1e6 + 5;
const int mod = (int)1e9 + 7; // 998244353;
const int lg = 25; // lg + 1
const int oo = 1e9;
const long long ooo = 1e18;
template<class X, class Y> bool mini(X &a, Y b) {
return a > b ? (a = b, true) : false;
}
template<class X, class Y> bool maxi(X &a, Y b) {
return a < b ? (a = b, true) : false;
}
void add(int &a, int b) {
a += b;
if (a >= mod) a -= mod;
if (a < 0) a += mod;
}
int n, q;
int h[N];
int bit[N];
void update(int u, int c) {
for (; u < N; u += u & (-u)) bit[u] += c;
}
int get(int u) {
int res = 0;
for (; u > 0; u -= u & (-u)) res += bit[u];
return res;
}
int get(int l, int r) {
return get(r) - get(l - 1);
}
void update(int l, int r, int c) {
update(l, c);
update(r + 1, -c);
}
void add(int i) {
if (i < 1 || i >= n) return;
int l = min(h[i], h[i + 1]);
int r = max(h[i], h[i + 1]);
update(l, r, 1);
}
void del(int i) {
if (i < 1 || i >= n) return;
int l = min(h[i], h[i + 1]);
int r = max(h[i], h[i + 1]);
update(l, r, -1);
}
int main() {
ios::sync_with_stdio(false);
cin.tie(0);
// freopen(file".inp", "r", stdin);
// freopen(file".out", "w", stdout);
cin >> n >> q;
for (int i = 1; i <= n; ++i)
cin >> h[i];
for (int i = 1; i <= n; ++i)
add(i);
while (q--) {
int op;
cin >> op;
if (op == 1) {
int pos, newH;
cin >> pos >> newH;
del(pos - 1);
del(pos);
h[pos] = newH;
add(pos - 1);
add(pos);
}
else {
int x;
cin >> x;
cout << get(x) << '\n';
}
}
return 0;
}
/*
*/
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