#include <bits/stdc++.h>
using namespace std;
typedef long long ll;
typedef pair<int, int> pii;
typedef pair<int, pii> piii;
typedef vector<int> vi;
typedef vector<ll> vll;
#define pb push_back
#define mp make_pair
#define ff first
#define ss second
#define sz(a) ((int)(a).size())
#define rep(i,a,b) for(int i=(a); i<(b); i++)
#define trav(it, a) for(auto& it : a)
#define allin(it, a) for(auto it : a)
#define read(v, a, b) for(int i=(a); i<(b); i++) scanf("%d", &v[i]);
#define clr(a,v) memset(a, v, sizeof(a))
#define all(a) (a).begin(),(a).end()
#define FAST cin.tie(0), cout.tie(0), ios::sync_with_stdio(0)
#define db(x) cerr << #x << " == " << x << endl
const int maxn = 1e6 + 100;
int bit[maxn];
void update(int x, int v) {
for(; x < maxn; x += x&-x)
bit[x] += v;
}
int query(int x) {
int ans = 0;
for(; x > 0; x -= x&-x)
ans += bit[x];
return ans;
}
int main(){
int n, m; scanf("%d %d", &n, &m);
vi a(n+1);
read(a,1,n+1);
rep(i,1,n) update(min(a[i], a[i+1]), 1), update(max(a[i], a[i+1])+1, -1);
// It's in purpose not to include the last because there's no one in front of it
while(m--) {
int type, x; scanf("%d %d", &type, &x);
if(type == 1) {
int v; scanf("%d", &v);
// if(n == 1) {
// a[1] = v;
// continue;
// }
int i = x;
if(x == 1) {
update(min(a[i], a[i+1]), -1), update(max(a[i], a[i+1])+1, 1);
a[i] = v;
update(min(a[i], a[i+1]), 1), update(max(a[i], a[i+1])+1, -1);
}
else if(x == n) {
update(min(a[i], a[i-1]), -1), update(max(a[i], a[i-1])+1, 1);
a[i] = v;
update(min(a[i], a[i-1]), 1), update(max(a[i], a[i-1])+1, -1);
}
else {
update(min(a[i], a[i+1]), -1), update(max(a[i], a[i+1])+1, 1);
update(min(a[i], a[i-1]), -1), update(max(a[i], a[i-1])+1, 1);
a[i] = v;
update(min(a[i], a[i+1]), 1), update(max(a[i], a[i+1])+1, -1);
update(min(a[i], a[i-1]), 1), update(max(a[i], a[i-1])+1, -1);
}
}
else{
// else if(n != 1){
printf("%d\n", query(x));
}
// else {
// if(x == a[1]) printf("1\n");
// else printf("0\n");
// }
}
}
Compilation message
game.cpp: In function 'int main()':
game.cpp:41:17: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
int n, m; scanf("%d %d", &n, &m);
~~~~~^~~~~~~~~~~~~~~~~
game.cpp:18:55: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
#define read(v, a, b) for(int i=(a); i<(b); i++) scanf("%d", &v[i]);
~~~~~^~~~~~~~~~~~~
game.cpp:43:2: note: in expansion of macro 'read'
read(a,1,n+1);
^~~~
game.cpp:47:21: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
int type, x; scanf("%d %d", &type, &x);
~~~~~^~~~~~~~~~~~~~~~~~~~
game.cpp:49:16: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
int v; scanf("%d", &v);
~~~~~^~~~~~~~~~
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
4 ms |
384 KB |
Output is correct |
| 2 |
Correct |
7 ms |
3840 KB |
Output is correct |
| 3 |
Correct |
7 ms |
3840 KB |
Output is correct |
| 4 |
Correct |
8 ms |
3968 KB |
Output is correct |
| 5 |
Correct |
7 ms |
3840 KB |
Output is correct |
| 6 |
Correct |
7 ms |
3968 KB |
Output is correct |
| 7 |
Correct |
6 ms |
384 KB |
Output is correct |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
4 ms |
384 KB |
Output is correct |
| 2 |
Correct |
7 ms |
3840 KB |
Output is correct |
| 3 |
Correct |
7 ms |
3840 KB |
Output is correct |
| 4 |
Correct |
8 ms |
3968 KB |
Output is correct |
| 5 |
Correct |
7 ms |
3840 KB |
Output is correct |
| 6 |
Correct |
7 ms |
3968 KB |
Output is correct |
| 7 |
Correct |
6 ms |
384 KB |
Output is correct |
| 8 |
Correct |
58 ms |
992 KB |
Output is correct |
| 9 |
Correct |
69 ms |
5240 KB |
Output is correct |
| 10 |
Correct |
72 ms |
5240 KB |
Output is correct |
| 11 |
Correct |
58 ms |
1016 KB |
Output is correct |
| 12 |
Correct |
70 ms |
1432 KB |
Output is correct |
| 13 |
Correct |
60 ms |
1400 KB |
Output is correct |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
4 ms |
384 KB |
Output is correct |
| 2 |
Correct |
7 ms |
3840 KB |
Output is correct |
| 3 |
Correct |
7 ms |
3840 KB |
Output is correct |
| 4 |
Correct |
8 ms |
3968 KB |
Output is correct |
| 5 |
Correct |
7 ms |
3840 KB |
Output is correct |
| 6 |
Correct |
7 ms |
3968 KB |
Output is correct |
| 7 |
Correct |
6 ms |
384 KB |
Output is correct |
| 8 |
Correct |
58 ms |
992 KB |
Output is correct |
| 9 |
Correct |
69 ms |
5240 KB |
Output is correct |
| 10 |
Correct |
72 ms |
5240 KB |
Output is correct |
| 11 |
Correct |
58 ms |
1016 KB |
Output is correct |
| 12 |
Correct |
70 ms |
1432 KB |
Output is correct |
| 13 |
Correct |
60 ms |
1400 KB |
Output is correct |
| 14 |
Correct |
92 ms |
4940 KB |
Output is correct |
| 15 |
Correct |
100 ms |
4896 KB |
Output is correct |
| 16 |
Correct |
98 ms |
5112 KB |
Output is correct |
| 17 |
Correct |
96 ms |
5240 KB |
Output is correct |
| 18 |
Correct |
98 ms |
5016 KB |
Output is correct |
