oj.uz

Submission #907646

# Submission time Handle Problem Language Result Execution time Memory
907646 2024-01-16T01:16:22 Z OAleksa Group Photo (JOI21_ho_t3) C++14
100 / 100
 501 ms 141552 KB 
#include <bits/stdc++.h>
//ako ovaj vaso daso misli da me pobedjuje.....
using namespace std;
#define int long long
#define f first
#define s second
const int N = 5010;
int dp[N], a[N], n, cost[N][N], fenw[N], pos[N];
//cost[i][j] -> prvih i je reseno i ja pocinjem od j
//prvi broj je i + 1
void add(int v, int val) {
	for (int i = v;i < N;i += (i & -i))
		fenw[i] += val;
}
int get(int v) {
	int res = 0;
	for (int i = v;i > 0;i -= (i & -i))
		res += fenw[i];
	return res;
}
void solve() {
	for (int i = 1;i <= n;i++) {
		int s = 0;
		vector<int> p(n + 1);
		for (int j = n;j >= 1;j--) {
			if (a[j] < i)
				s++;
			else
				p[a[j]] = pos[a[j]] + s;
		}
		for (int j = i;j <= n;j++) {
			cost[i][j] = cost[i][j - 1] + p[j] - i - get(p[j]);
			add(1, 1);
			add(p[j] + 1, -1);
		}
		for (auto &i : fenw)
			i = 0;
	}
}
signed main() {
  ios::sync_with_stdio(false);
  cin.tie(0);
  cout.tie(0);
  int tt = 1;
  //cin >> tt;
  while (tt--) {
  	cin >> n;
  	for (int i = 1;i <= n;i++) {
  		dp[i] = 1e9;
  		cin >> a[i];
  		pos[a[i]] = i;
  	}
  	solve();
  	for (int i = 1;i <= n;i++) {
  		for (int j = i - 1;j >= 0;j--)
  			dp[i] = min(dp[i], dp[j] + cost[j + 1][i]);
  	}
  	cout << dp[n];
	}
  return 0;
}

Subtask #1
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 600 KB Output is correct
2 Correct 1 ms 344 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 1 ms 348 KB Output is correct
5 Correct 1 ms 348 KB Output is correct
6 Correct 1 ms 348 KB Output is correct
7 Correct 1 ms 348 KB Output is correct
8 Correct 1 ms 344 KB Output is correct
9 Correct 1 ms 348 KB Output is correct
10 Correct 0 ms 348 KB Output is correct

Subtask #2
7.0 / 7.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 600 KB Output is correct
2 Correct 1 ms 344 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 1 ms 348 KB Output is correct
5 Correct 1 ms 348 KB Output is correct
6 Correct 1 ms 348 KB Output is correct
7 Correct 1 ms 348 KB Output is correct
8 Correct 1 ms 344 KB Output is correct
9 Correct 1 ms 348 KB Output is correct
10 Correct 0 ms 348 KB Output is correct
11 Correct 1 ms 600 KB Output is correct
12 Correct 1 ms 348 KB Output is correct
13 Correct 1 ms 344 KB Output is correct
14 Correct 1 ms 348 KB Output is correct
15 Correct 1 ms 348 KB Output is correct
16 Correct 1 ms 604 KB Output is correct
17 Correct 1 ms 348 KB Output is correct
18 Correct 1 ms 348 KB Output is correct
19 Correct 1 ms 348 KB Output is correct
20 Correct 1 ms 348 KB Output is correct

Subtask #3
32.0 / 32.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 600 KB Output is correct
2 Correct 1 ms 344 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 1 ms 348 KB Output is correct
5 Correct 1 ms 348 KB Output is correct
6 Correct 1 ms 348 KB Output is correct
7 Correct 1 ms 348 KB Output is correct
8 Correct 1 ms 344 KB Output is correct
9 Correct 1 ms 348 KB Output is correct
10 Correct 0 ms 348 KB Output is correct
11 Correct 1 ms 600 KB Output is correct
12 Correct 1 ms 348 KB Output is correct
13 Correct 1 ms 344 KB Output is correct
14 Correct 1 ms 348 KB Output is correct
15 Correct 1 ms 348 KB Output is correct
16 Correct 1 ms 604 KB Output is correct
17 Correct 1 ms 348 KB Output is correct
18 Correct 1 ms 348 KB Output is correct
19 Correct 1 ms 348 KB Output is correct
20 Correct 1 ms 348 KB Output is correct
21 Correct 2 ms 1372 KB Output is correct
22 Correct 2 ms 1372 KB Output is correct
23 Correct 2 ms 1372 KB Output is correct
24 Correct 2 ms 1372 KB Output is correct
25 Correct 2 ms 1368 KB Output is correct
26 Correct 2 ms 1372 KB Output is correct
27 Correct 2 ms 1372 KB Output is correct
28 Correct 3 ms 1272 KB Output is correct
29 Correct 2 ms 1372 KB Output is correct
30 Correct 2 ms 1372 KB Output is correct

Subtask #4
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 600 KB Output is correct
2 Correct 1 ms 344 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 1 ms 348 KB Output is correct
5 Correct 1 ms 348 KB Output is correct
6 Correct 1 ms 348 KB Output is correct
7 Correct 1 ms 348 KB Output is correct
8 Correct 1 ms 344 KB Output is correct
9 Correct 1 ms 348 KB Output is correct
10 Correct 0 ms 348 KB Output is correct
11 Correct 1 ms 600 KB Output is correct
12 Correct 1 ms 348 KB Output is correct
13 Correct 1 ms 344 KB Output is correct
14 Correct 1 ms 348 KB Output is correct
15 Correct 1 ms 348 KB Output is correct
16 Correct 1 ms 604 KB Output is correct
17 Correct 1 ms 348 KB Output is correct
18 Correct 1 ms 348 KB Output is correct
19 Correct 1 ms 348 KB Output is correct
20 Correct 1 ms 348 KB Output is correct
21 Correct 2 ms 1372 KB Output is correct
22 Correct 2 ms 1372 KB Output is correct
23 Correct 2 ms 1372 KB Output is correct
24 Correct 2 ms 1372 KB Output is correct
25 Correct 2 ms 1368 KB Output is correct
26 Correct 2 ms 1372 KB Output is correct
27 Correct 2 ms 1372 KB Output is correct
28 Correct 3 ms 1272 KB Output is correct
29 Correct 2 ms 1372 KB Output is correct
30 Correct 2 ms 1372 KB Output is correct
31 Correct 13 ms 6232 KB Output is correct
32 Correct 13 ms 6228 KB Output is correct
33 Correct 14 ms 6216 KB Output is correct
34 Correct 16 ms 6236 KB Output is correct
35 Correct 14 ms 6072 KB Output is correct
36 Correct 13 ms 6148 KB Output is correct
37 Correct 13 ms 6232 KB Output is correct
38 Correct 13 ms 6232 KB Output is correct
39 Correct 13 ms 6232 KB Output is correct
40 Correct 13 ms 6236 KB Output is correct

Subtask #5
36.0 / 36.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 600 KB Output is correct
2 Correct 1 ms 344 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 1 ms 348 KB Output is correct
5 Correct 1 ms 348 KB Output is correct
6 Correct 1 ms 348 KB Output is correct
7 Correct 1 ms 348 KB Output is correct
8 Correct 1 ms 344 KB Output is correct
9 Correct 1 ms 348 KB Output is correct
10 Correct 0 ms 348 KB Output is correct
11 Correct 1 ms 600 KB Output is correct
12 Correct 1 ms 348 KB Output is correct
13 Correct 1 ms 344 KB Output is correct
14 Correct 1 ms 348 KB Output is correct
15 Correct 1 ms 348 KB Output is correct
16 Correct 1 ms 604 KB Output is correct
17 Correct 1 ms 348 KB Output is correct
18 Correct 1 ms 348 KB Output is correct
19 Correct 1 ms 348 KB Output is correct
20 Correct 1 ms 348 KB Output is correct
21 Correct 2 ms 1372 KB Output is correct
22 Correct 2 ms 1372 KB Output is correct
23 Correct 2 ms 1372 KB Output is correct
24 Correct 2 ms 1372 KB Output is correct
25 Correct 2 ms 1368 KB Output is correct
26 Correct 2 ms 1372 KB Output is correct
27 Correct 2 ms 1372 KB Output is correct
28 Correct 3 ms 1272 KB Output is correct
29 Correct 2 ms 1372 KB Output is correct
30 Correct 2 ms 1372 KB Output is correct
31 Correct 13 ms 6232 KB Output is correct
32 Correct 13 ms 6228 KB Output is correct
33 Correct 14 ms 6216 KB Output is correct
34 Correct 16 ms 6236 KB Output is correct
35 Correct 14 ms 6072 KB Output is correct
36 Correct 13 ms 6148 KB Output is correct
37 Correct 13 ms 6232 KB Output is correct
38 Correct 13 ms 6232 KB Output is correct
39 Correct 13 ms 6232 KB Output is correct
40 Correct 13 ms 6236 KB Output is correct
41 Correct 489 ms 141048 KB Output is correct
42 Correct 489 ms 141264 KB Output is correct
43 Correct 484 ms 141404 KB Output is correct
44 Correct 486 ms 141140 KB Output is correct
45 Correct 491 ms 141208 KB Output is correct
46 Correct 501 ms 141340 KB Output is correct
47 Correct 483 ms 141340 KB Output is correct
48 Correct 489 ms 141308 KB Output is correct
49 Correct 486 ms 141544 KB Output is correct
50 Correct 484 ms 141140 KB Output is correct
51 Correct 488 ms 141340 KB Output is correct
52 Correct 497 ms 141552 KB Output is correct
53 Correct 493 ms 141296 KB Output is correct
54 Correct 490 ms 141316 KB Output is correct
55 Correct 498 ms 141280 KB Output is correct