Submission #1121296

#	Time	Username	Problem	Language	Result	Execution time	Memory
1121296		ntdaccode	Bubble Sort 2 (JOI18_bubblesort2)	C++17	38 / 100	9057 ms	1996 KiB

bubblesort2

#include<bits/stdc++.h>
#define fori(i,a,b) for(int i=a;i<=b;i++)
#define pb push_back

using namespace std;

typedef pair<int,int> ii;
typedef tuple<int,int,int> tp;

const int M = 1e6 + 10;
const int N = 1e3 + 10;
const int mod = 1e9 + 7;

int n, q, a[M], u[M], v[M], bit[M] , m = 0;
void upd(int idx)
{
  while(idx <= m) {
    bit[idx]++;
    idx += idx&(-idx);
  }
}

int get(int idx) {
  int res = 0;
  while(idx > 0) {
    res += bit[idx];
    idx -= idx&(-idx);
  }
  return res;
}

vector<int> rrh;
vector<int> countScans(vector<int> A, vector<int> X, vector<int> V)
{
  n = A.size();
  q = X.size();
  vector<int> ans;
   cin >> n >> q;
    for(int i = 1;i <= n; i++) {
        a[i] = A[i - 1];
        rrh.pb(a[i]);
    }
    for(int i = 1;i <= q; i++)
      {
        u[i] = X[i - 1];
        v[i] = V[i - 1];
        rrh.pb(v[i]);
        u[i]++;
      }
    sort(rrh.begin(),rrh.end());
    rrh.resize(unique(rrh.begin(),rrh.end()) - rrh.begin());
    for(int i = 1;i <= n; i++) a[i] = lower_bound(rrh.begin(),rrh.end(),a[i]) - rrh.begin() + 1;
    m = rrh.size();
    for(int i = 1;i <= q; i++) {
        v[i] = lower_bound(rrh.begin(),rrh.end(), v[i]) - rrh.begin() + 1;
        a[u[i]] = v[i];
        for(int i = 1;i <= m; i++) bit[i] = 0;
        int kq = 0;
        for(int i = 1;i <= n; i++) {
            upd(a[i]);
            kq = max(kq,i - get(a[i]));
           // cout << a[i] << " " << get(a[i] - 1) << "\n";
        }
        ans.pb(kq);
    }
    return ans;
}

• Subtask 1: 17 / 17
• Subtask 2: 21 / 21
• Subtask 3: 0 / 22
• Subtask 4: 0 / 40