oj.uz

Submission #1108603

# Submission time Handle Problem Language Result Execution time Memory
1108603 2024-11-04T14:59:23 Z VinhLuu Bubble Sort 2 (JOI18_bubblesort2) C++17
38 / 100
 9000 ms 10772 KB 
#include <bits/stdc++.h>
#define ll long long
#include "bubblesort2.h"
using namespace std;

const int N = 1e6 + 5;

int n, q, a[N], _x[N], _y[N], kq[N];

namespace sub1{
  int b[N];
  vector<int> solve(){
    vector<int> ans;
    for(int k = 1; k <= q; k ++){
      int x = _x[k], y = _y[k];
      a[x] = y;
      int cnt = 0;
      for(int i = 1; i <= n; i ++) b[i] = a[i];
      while(true){
        bool ff = true;
        for(int i = 1; i < n; i ++) if(b[i] > b[i + 1]){
          swap(b[i], b[i + 1]);
          ff = false;
        }
        if(ff) break;
        cnt++;
      }
//      for(int i = 1; i <= n; i ++) cerr << a[i] << " ";
//      cerr << "   " << cnt << " x\n";
      ans.push_back(cnt);
    }
    return ans;
  }
}

namespace sub2{
  int affect[N];
  vector<int> solve(){
    vector<int> ans;
    for(int i = 1; i < n; i ++){
      for(int j = i + 1; j <= n; j ++){
        affect[j] += (a[i] > a[j]);
      }
    }
    for(int k = 1; k <= q; k ++){
      int x = _x[k], y = _y[k];
      int cnt = 0;
      for(int i = x + 1; i <= n; i ++) if(a[x] > a[i]) affect[i]--;
      a[x] = y;
      affect[x] = 0;
      for(int i = 1; i < x; i ++) if(a[i] > a[x]) affect[x]++;
      for(int i = x + 1; i <= n; i ++) if(a[x] > a[i]) affect[i]++;
      int mx = 0;
      for(int i = 1; i <= n; i ++) mx = max(mx, affect[i]);
      ans.push_back(mx);
    }
    return ans;
  }
}

std::vector<int> countScans(std::vector<int> A,std::vector<int> X,std::vector<int> V){
  n = A.size();
  for(int i = 0; i < n; i ++) a[i + 1] = A[i];

  q = X.size();

  for(int k = 0; k < q; k ++){
    _x[k + 1] = X[k] + 1, _y[k + 1] = V[k];
  }

  return sub2 :: solve();
//  return sub1 :: solve();



  int ans = 0;

	std::vector<int> answer(q);
	for(int j = 0; j < q; j ++) {
		answer[j] = kq[j];
	}
	return answer;
}

//#define LOCAL

#ifdef LOCAL

int _n, _q;

int main(){
  ios_base::sync_with_stdio(0); cin.tie(0); cout.tie(0);
  #define task "v"
  if(fopen(task ".inp","r")){
    freopen(task ".inp","r",stdin);
    freopen(task ".out","w",stdout);
  }

	cin >> _n >> _q;

	std::vector<int> A(_n);
  for(int i = 0; i < _n; i ++)
    cin >> A[i];

	std::vector<int> X(_q),V(_q);
	for(int j = 0; j < _q ; j++){
		cin >> X[j] >> V[j];
	}


	std::vector<int> res=countScans(A,X,V);

	for(int j=0;j<int(res.size());j++)
		cout << res[j] << "\n";
}

/*
4 2
1 2 3 4
0 3
2 1
*/

#endif // LOCAL

Compilation message

bubblesort2.cpp: In function 'std::vector<int> sub2::solve()':
bubblesort2.cpp:47:11: warning: unused variable 'cnt' [-Wunused-variable]
   47 |       int cnt = 0;
      |           ^~~
bubblesort2.cpp: In function 'std::vector<int> countScans(std::vector<int>, std::vector<int>, std::vector<int>)':
bubblesort2.cpp:76:7: warning: unused variable 'ans' [-Wunused-variable]
   76 |   int ans = 0;
      |       ^~~

Subtask #1
17.0 / 17.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 6480 KB Output is correct
2 Correct 4 ms 6480 KB Output is correct
3 Correct 18 ms 6736 KB Output is correct
4 Correct 19 ms 6480 KB Output is correct
5 Correct 16 ms 6480 KB Output is correct
6 Correct 12 ms 6480 KB Output is correct
7 Correct 13 ms 6480 KB Output is correct
8 Correct 14 ms 6716 KB Output is correct
9 Correct 16 ms 6652 KB Output is correct
10 Correct 12 ms 6704 KB Output is correct
11 Correct 12 ms 6696 KB Output is correct
12 Correct 13 ms 6648 KB Output is correct
13 Correct 13 ms 6480 KB Output is correct
14 Correct 12 ms 6648 KB Output is correct
15 Correct 11 ms 6712 KB Output is correct
16 Correct 10 ms 6480 KB Output is correct
17 Correct 10 ms 6480 KB Output is correct
18 Correct 10 ms 6712 KB Output is correct

Subtask #2
21.0 / 21.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 6480 KB Output is correct
2 Correct 4 ms 6480 KB Output is correct
3 Correct 18 ms 6736 KB Output is correct
4 Correct 19 ms 6480 KB Output is correct
5 Correct 16 ms 6480 KB Output is correct
6 Correct 12 ms 6480 KB Output is correct
7 Correct 13 ms 6480 KB Output is correct
8 Correct 14 ms 6716 KB Output is correct
9 Correct 16 ms 6652 KB Output is correct
10 Correct 12 ms 6704 KB Output is correct
11 Correct 12 ms 6696 KB Output is correct
12 Correct 13 ms 6648 KB Output is correct
13 Correct 13 ms 6480 KB Output is correct
14 Correct 12 ms 6648 KB Output is correct
15 Correct 11 ms 6712 KB Output is correct
16 Correct 10 ms 6480 KB Output is correct
17 Correct 10 ms 6480 KB Output is correct
18 Correct 10 ms 6712 KB Output is correct
19 Correct 234 ms 6952 KB Output is correct
20 Correct 302 ms 6992 KB Output is correct
21 Correct 201 ms 6992 KB Output is correct
22 Correct 242 ms 7012 KB Output is correct
23 Correct 180 ms 6988 KB Output is correct
24 Correct 180 ms 6976 KB Output is correct
25 Correct 162 ms 6988 KB Output is correct
26 Correct 159 ms 6980 KB Output is correct
27 Correct 135 ms 6984 KB Output is correct
28 Correct 137 ms 6984 KB Output is correct

Subtask #3
0 / 22.0

# Verdict Execution time Memory Grader output
1 Correct 517 ms 7048 KB Output is correct
2 Correct 4963 ms 7972 KB Output is correct
3 Execution timed out 9041 ms 10772 KB Time limit exceeded
4 Halted 0 ms 0 KB -

Subtask #4
0 / 40.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 6480 KB Output is correct
2 Correct 4 ms 6480 KB Output is correct
3 Correct 18 ms 6736 KB Output is correct
4 Correct 19 ms 6480 KB Output is correct
5 Correct 16 ms 6480 KB Output is correct
6 Correct 12 ms 6480 KB Output is correct
7 Correct 13 ms 6480 KB Output is correct
8 Correct 14 ms 6716 KB Output is correct
9 Correct 16 ms 6652 KB Output is correct
10 Correct 12 ms 6704 KB Output is correct
11 Correct 12 ms 6696 KB Output is correct
12 Correct 13 ms 6648 KB Output is correct
13 Correct 13 ms 6480 KB Output is correct
14 Correct 12 ms 6648 KB Output is correct
15 Correct 11 ms 6712 KB Output is correct
16 Correct 10 ms 6480 KB Output is correct
17 Correct 10 ms 6480 KB Output is correct
18 Correct 10 ms 6712 KB Output is correct
19 Correct 234 ms 6952 KB Output is correct
20 Correct 302 ms 6992 KB Output is correct
21 Correct 201 ms 6992 KB Output is correct
22 Correct 242 ms 7012 KB Output is correct
23 Correct 180 ms 6988 KB Output is correct
24 Correct 180 ms 6976 KB Output is correct
25 Correct 162 ms 6988 KB Output is correct
26 Correct 159 ms 6980 KB Output is correct
27 Correct 135 ms 6984 KB Output is correct
28 Correct 137 ms 6984 KB Output is correct
29 Correct 517 ms 7048 KB Output is correct
30 Correct 4963 ms 7972 KB Output is correct
31 Execution timed out 9041 ms 10772 KB Time limit exceeded
32 Halted 0 ms 0 KB -