#include <bits/stdc++.h>
using namespace std;
int bit[1000005], a[100005];
void update(int x, int y)
{
for (int i=x; i<=1e6; i+=i&(-i))
bit[i]+=y;
}
int query(int x)
{
int ans=0;
for (int i=x; i; i-=i&(-i))
ans+=bit[i];
return ans;
}
int main()
{
ios::sync_with_stdio(0);
cin.tie(0);
cout.tie(0);
int n, m;
cin >> n >> m;
for (int i=1; i<=n; i++)
{
cin >> a[i];
update(a[i], 1);
}
for (int i=1; i<=m; i++)
{
int t;
cin >> t;
if (t==1)
{
int x, y;
cin >> x >> y;
update(a[x], -1);
a[x]=y;
update(a[x], 1);
}
else
{
int x;
cin >> x;
cout << query(x) << '\n';
}
}
return 0;
}
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
1 ms |
332 KB |
Output is correct |
2 |
Incorrect |
2 ms |
4180 KB |
Output isn't correct |
3 |
Halted |
0 ms |
0 KB |
- |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
1 ms |
332 KB |
Output is correct |
2 |
Incorrect |
2 ms |
4180 KB |
Output isn't correct |
3 |
Halted |
0 ms |
0 KB |
- |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
1 ms |
332 KB |
Output is correct |
2 |
Incorrect |
2 ms |
4180 KB |
Output isn't correct |
3 |
Halted |
0 ms |
0 KB |
- |