#include <bits/stdc++.h>
#define ios ios_base::sync_with_stdio(0); cin.tie(0); cout.tie(0)
#define file(s) if (fopen(s".in", "r")) freopen(s".in", "r", stdin), freopen(s".out", "w", stdout)
#define all(a) a.begin() , a.end()
#define F first
#define S second
using namespace std;
using ll = long long;
const int N = 1e6+5 , inf = 2e9 + 7;
const ll INF = 1e18 , mod = 1e9+7 , P = 6547;
int a[N] , f[N];
void upd(int pos , int val) {
for(; pos < N; pos |= pos+1) {
f[pos] += val;
}
}
int get(int x) {
int res = 0;
for(; x > 0; x &= x+1 , x--) {
res += f[x];
}
return res;
}
void solve() {
int n , m;
cin >> n >> m;
for(int i = 1; i <= n; i ++) {
cin >> a[i];
if(i != 1) {
upd(min(a[i] , a[i-1]) , 1);
upd(max(a[i] , a[i-1]) , -1);
}
}
while(m --) {
int t;
cin >> t;
if(t == 1) {
int i , val;
cin >> i >> val;
if(i != 1) {
upd(min(a[i] , a[i-1]) , -1);
upd(max(a[i] , a[i-1]) , 1);
}
if(i != n) {
upd(min(a[i] , a[i+1]) , -1);
upd(max(a[i] , a[i+1]) , 1);
}
a[i] = val;
if(i != 1) {
upd(min(a[i] , a[i-1]) , -1);
upd(max(a[i] , a[i-1]) , 1);
}
if(i != n) {
upd(min(a[i] , a[i+1]) , -1);
upd(max(a[i] , a[i+1]) , 1);
}
}
else {
int x;
cin >> x;
cout << get(x) << '\n';
}
}
}
/*
*/
main() {
ios;
int tt = 1;
//cin >> tt;
while(tt --) {
solve();
}
return 0;
}
Compilation message
game.cpp:75:6: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type]
75 | main() {
| ^
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
1 ms |
364 KB |
Output is correct |
| 2 |
Incorrect |
4 ms |
4076 KB |
Output isn't correct |
| 3 |
Halted |
0 ms |
0 KB |
- |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
1 ms |
364 KB |
Output is correct |
| 2 |
Incorrect |
4 ms |
4076 KB |
Output isn't correct |
| 3 |
Halted |
0 ms |
0 KB |
- |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
1 ms |
364 KB |
Output is correct |
| 2 |
Incorrect |
4 ms |
4076 KB |
Output isn't correct |
| 3 |
Halted |
0 ms |
0 KB |
- |
