#include <iostream>
#include <iomanip>
#include <algorithm>
#include <string>
#include <set>
#include <vector>
#include <cmath>
#include <map>
#include <algorithm>
#include <stack>
#include <queue>
#include <cstdlib>
#include <cstdio>
#include <cstring>
#include <iostream>
#include <cstdio>
#include <cstdlib>
#include <cstring>
#include <algorithm>
#include <cmath>
#include <string>
#include <sstream>
#include <vector>
#include <queue>
#include <set>
#include <map>
#include <ctime>
#include <unordered_map>
#include <unordered_set>
#include <cassert>
#define __builtin_popcount __popcnt
#define pb push_back
#define pob pop_back
#define pll pair <long long, long long>
#define pld pair <long double, long double>
#define ll long long
#define ull unsigned long long
#define ld long double
#define int ll // HERE CAN BE WA/RE/MLE/TLE
#define Int int
#define itn int
#define nit int
#define x first
#define y second
#define all(v) v.begin(),v.end()
#define sz(s) s.size()
#define skip continue
#define y0 ijl
#define y1 hjk
#define equal bayan
#define friend trs
#define delete bae
#define div aber
#define exp earb
#define new aer
using namespace std;
const int N = 5e6 + 7;
const int WN = 1e5 + 7;
const int inf = 1e9 + 7;
const int INF = 1e18 + 7;
const int MOD = 998244353;
int a[N];
int t[N];
int z[N];
void push(int v, int tl, int tr) {
if (z[v] == 0)return;
t[v] += z[v] * (tr - tl + 1);
if (tl != tr)z[v * 2] = z[v * 2 + 1] = z[v];
z[v] = 0;
}
int get(int v, int tl, int tr, int l, int r) {
push(v, tl, tr);
if (tr < l || tl > r)return 0;
if (tl >= l && tr <= r)return t[v];
int mid = (tl + tr) / 2;
return (get(v * 2, tl, mid, l, r) + get(v * 2 + 1, mid + 1, tr, l, r));
}
void update(int v, int tl, int tr, int l, int r, int x) {
push(v, tl, tr);
if (tr < l || tl > r)return;
if (tl >= l && tr <= r) {
z[v] = x;
push(v, tl, tr);
return;
}
int mid = (tl + tr) / 2;
update(v * 2, tl, mid, l, r, x), update(v * 2 + 1, mid + 1, tr, l, r, x);
t[v] = t[v * 2] + t[v * 2 + 1];
}
void solve() {
int n, q;
cin >> n >> q;
for (int i = 1;i <= n;i++) {
cin >> a[i];
if (i != 1) {
if (a[i] - 1 > a[i - 1])update(1, 1, n, a[i - 1] + 1, a[i] - 1, 1);
if (a[i] + 1 < a[i - 1])update(1, 1, n, a[i] + 1, a[i - 1] - 1, 1);
}
}
while (q--) {
int type, pos, x, h;
cin >> type;
/*for (int i = 1;i <= n;i++) {
for (int j = 1;j <= n;j++) {
if (j == i)skip;
cout << i << ' ' << j << ':';
cout << get(1, 1, n, i, j) << '\n';
}
}
*/
if (type == 1) {
cin >> pos >> x;
if (pos != 1) {
if (a[pos] - 1 > a[pos - 1])update(1, 1, n, a[pos - 1] + 1, a[pos] - 1, -1);
if (a[pos] + 1 < a[pos - 1])update(1, 1, n, a[pos] + 1, a[pos - 1] - 1, -1);
}
if (pos != n) {
if (a[pos] - 1 > a[pos + 1])update(1, 1, n, a[pos + 1] + 1, a[pos] - 1, -1);
if (a[pos] + 1 < a[pos + 1])update(1, 1, n, a[pos] + 1, a[pos + 1] - 1, -1);
}
a[pos] = x;
if (pos != 1) {
if (a[pos] - 1 > a[pos - 1])update(1, 1, n, a[pos - 1] + 1, a[pos] - 1, 1);
if (a[pos] + 1 < a[pos - 1])update(1, 1, n, a[pos] + 1, a[pos - 1] - 1, 1);
}
if (pos != n) {
if (a[pos] - 1 > a[pos + 1])update(1, 1, n, a[pos + 1] + 1, a[pos] - 1, 1);
if (a[pos] + 1 < a[pos + 1])update(1, 1, n, a[pos] + 1, a[pos + 1] - 1, 1);
}
}
else {
cin >> h;
cout << get(1, 1, n, h, h) << '\n';
}
}
}
signed main() {
ios_base::sync_with_stdio(NULL);
cin.tie(0);
cout.tie(0);
//freopen("sum.in", "r", stdin);
//freopen("sum.out", "w", stdout);
int tt;
tt = 1;
//cin >> tt;//Here can be tupism
while (tt--)solve();
return 0;
}
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
1 ms |
332 KB |
Output is correct |
| 2 |
Incorrect |
1 ms |
332 KB |
Output isn't correct |
| 3 |
Halted |
0 ms |
0 KB |
- |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
1 ms |
332 KB |
Output is correct |
| 2 |
Incorrect |
1 ms |
332 KB |
Output isn't correct |
| 3 |
Halted |
0 ms |
0 KB |
- |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
1 ms |
332 KB |
Output is correct |
| 2 |
Incorrect |
1 ms |
332 KB |
Output isn't correct |
| 3 |
Halted |
0 ms |
0 KB |
- |
