oj.uz

Submission #979000

# Submission time Handle Problem Language Result Execution time Memory
979000 2024-05-10T05:44:12 Z penguin133 Group Photo (JOI21_ho_t3) C++17
100 / 100
 338 ms 313732 KB 
#include <bits/stdc++.h>
using namespace std;

#define int long long
#define pi pair<int, int>
#define pii pair<int, pi>
#define fi first
#define se second
#ifdef _WIN32
#define getchar_unlocked _getchar_nolock
#endif
mt19937_64 rng(chrono::steady_clock::now().time_since_epoch().count());

int dp[5005], A[5005], pos[5005], P[5005][5005], col[5005][5005], n;

void solve(){
	cin >> n;
	for(int i = 1; i <= n; i++){
		cin >> A[i];
		pos[A[i]] = i;
	}
	for(int i = 1; i <= n; i++){
		for(int j = i + 1; j <= n; j++){
			if(pos[i] < pos[j])P[i][j]++;
			P[i][j] += P[i][j - 1];
		}
	}
	for(int i = 1; i <= n; i++){
		for(int j = 1; j <= n; j++){
			col[i][j] = col[i - 1][j] + P[i][j];
		}
	}
	dp[0] = 0;
	for(int i = 1; i <= n; i++){
		dp[i] = 1e18;
		for(int j = i; j >= 1; j--){
			//arrange j..i in i..j
			int cnt = 0;
			/*
			for(int k = 1; k < j; k++){
				int tmp = P[k][i] - P[k][j - 1];
				cnt += (i - j + 1) - tmp;
			}
			*/
			cnt += (i - j + 1) * (j - 1) - col[j - 1][i] + col[j - 1][j - 1];
			/*
			for(int k = j; k <= i; k++){
				int tmp = P[k][i] - P[k][k];
				//cnt += i - k - tmp;
				cnt += tmp;
			}
			*/
			cnt += col[i][i] - col[j - 1][i];
			dp[i] = min(dp[i], cnt + dp[j - 1]);
		}
		//cout << dp[i] << ' ';
	}
	cout << dp[n];
	//cout << *min_element(dp[n] + 1, dp[n] + n + 1);
}

main(){
	ios::sync_with_stdio(0);cin.tie(0);
	int tc = 1;
	//cin >> tc;
	for(int tc1=1;tc1<=tc;tc1++){
		// cout << "Case #" << tc1 << ": ";
		solve();
	}
}

Compilation message

Main.cpp:62:1: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type]
   62 | main(){
      | ^~~~

Subtask #1
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 344 KB Output is correct
2 Correct 0 ms 344 KB Output is correct
3 Correct 1 ms 2396 KB Output is correct
4 Correct 1 ms 2396 KB Output is correct
5 Correct 1 ms 2396 KB Output is correct
6 Correct 1 ms 2648 KB Output is correct
7 Correct 1 ms 2396 KB Output is correct
8 Correct 1 ms 2396 KB Output is correct
9 Correct 1 ms 2396 KB Output is correct
10 Correct 1 ms 2396 KB Output is correct

Subtask #2
7.0 / 7.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 344 KB Output is correct
2 Correct 0 ms 344 KB Output is correct
3 Correct 1 ms 2396 KB Output is correct
4 Correct 1 ms 2396 KB Output is correct
5 Correct 1 ms 2396 KB Output is correct
6 Correct 1 ms 2648 KB Output is correct
7 Correct 1 ms 2396 KB Output is correct
8 Correct 1 ms 2396 KB Output is correct
9 Correct 1 ms 2396 KB Output is correct
10 Correct 1 ms 2396 KB Output is correct
11 Correct 1 ms 2396 KB Output is correct
12 Correct 1 ms 2396 KB Output is correct
13 Correct 1 ms 2396 KB Output is correct
14 Correct 1 ms 2396 KB Output is correct
15 Correct 1 ms 2396 KB Output is correct
16 Correct 1 ms 2396 KB Output is correct
17 Correct 1 ms 2396 KB Output is correct
18 Correct 1 ms 2396 KB Output is correct
19 Correct 1 ms 2396 KB Output is correct
20 Correct 1 ms 2396 KB Output is correct

Subtask #3
32.0 / 32.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 344 KB Output is correct
2 Correct 0 ms 344 KB Output is correct
3 Correct 1 ms 2396 KB Output is correct
4 Correct 1 ms 2396 KB Output is correct
5 Correct 1 ms 2396 KB Output is correct
6 Correct 1 ms 2648 KB Output is correct
7 Correct 1 ms 2396 KB Output is correct
8 Correct 1 ms 2396 KB Output is correct
9 Correct 1 ms 2396 KB Output is correct
10 Correct 1 ms 2396 KB Output is correct
11 Correct 1 ms 2396 KB Output is correct
12 Correct 1 ms 2396 KB Output is correct
13 Correct 1 ms 2396 KB Output is correct
14 Correct 1 ms 2396 KB Output is correct
15 Correct 1 ms 2396 KB Output is correct
16 Correct 1 ms 2396 KB Output is correct
17 Correct 1 ms 2396 KB Output is correct
18 Correct 1 ms 2396 KB Output is correct
19 Correct 1 ms 2396 KB Output is correct
20 Correct 1 ms 2396 KB Output is correct
21 Correct 2 ms 9564 KB Output is correct
22 Correct 2 ms 9564 KB Output is correct
23 Correct 2 ms 9564 KB Output is correct
24 Correct 2 ms 9564 KB Output is correct
25 Correct 2 ms 9564 KB Output is correct
26 Correct 2 ms 9564 KB Output is correct
27 Correct 2 ms 9564 KB Output is correct
28 Correct 2 ms 9564 KB Output is correct
29 Correct 2 ms 9564 KB Output is correct
30 Correct 2 ms 9564 KB Output is correct

Subtask #4
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 344 KB Output is correct
2 Correct 0 ms 344 KB Output is correct
3 Correct 1 ms 2396 KB Output is correct
4 Correct 1 ms 2396 KB Output is correct
5 Correct 1 ms 2396 KB Output is correct
6 Correct 1 ms 2648 KB Output is correct
7 Correct 1 ms 2396 KB Output is correct
8 Correct 1 ms 2396 KB Output is correct
9 Correct 1 ms 2396 KB Output is correct
10 Correct 1 ms 2396 KB Output is correct
11 Correct 1 ms 2396 KB Output is correct
12 Correct 1 ms 2396 KB Output is correct
13 Correct 1 ms 2396 KB Output is correct
14 Correct 1 ms 2396 KB Output is correct
15 Correct 1 ms 2396 KB Output is correct
16 Correct 1 ms 2396 KB Output is correct
17 Correct 1 ms 2396 KB Output is correct
18 Correct 1 ms 2396 KB Output is correct
19 Correct 1 ms 2396 KB Output is correct
20 Correct 1 ms 2396 KB Output is correct
21 Correct 2 ms 9564 KB Output is correct
22 Correct 2 ms 9564 KB Output is correct
23 Correct 2 ms 9564 KB Output is correct
24 Correct 2 ms 9564 KB Output is correct
25 Correct 2 ms 9564 KB Output is correct
26 Correct 2 ms 9564 KB Output is correct
27 Correct 2 ms 9564 KB Output is correct
28 Correct 2 ms 9564 KB Output is correct
29 Correct 2 ms 9564 KB Output is correct
30 Correct 2 ms 9564 KB Output is correct
31 Correct 10 ms 39004 KB Output is correct
32 Correct 10 ms 39096 KB Output is correct
33 Correct 11 ms 39084 KB Output is correct
34 Correct 10 ms 39072 KB Output is correct
35 Correct 11 ms 39004 KB Output is correct
36 Correct 10 ms 39004 KB Output is correct
37 Correct 10 ms 39112 KB Output is correct
38 Correct 11 ms 39004 KB Output is correct
39 Correct 10 ms 39004 KB Output is correct
40 Correct 10 ms 39004 KB Output is correct

Subtask #5
36.0 / 36.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 344 KB Output is correct
2 Correct 0 ms 344 KB Output is correct
3 Correct 1 ms 2396 KB Output is correct
4 Correct 1 ms 2396 KB Output is correct
5 Correct 1 ms 2396 KB Output is correct
6 Correct 1 ms 2648 KB Output is correct
7 Correct 1 ms 2396 KB Output is correct
8 Correct 1 ms 2396 KB Output is correct
9 Correct 1 ms 2396 KB Output is correct
10 Correct 1 ms 2396 KB Output is correct
11 Correct 1 ms 2396 KB Output is correct
12 Correct 1 ms 2396 KB Output is correct
13 Correct 1 ms 2396 KB Output is correct
14 Correct 1 ms 2396 KB Output is correct
15 Correct 1 ms 2396 KB Output is correct
16 Correct 1 ms 2396 KB Output is correct
17 Correct 1 ms 2396 KB Output is correct
18 Correct 1 ms 2396 KB Output is correct
19 Correct 1 ms 2396 KB Output is correct
20 Correct 1 ms 2396 KB Output is correct
21 Correct 2 ms 9564 KB Output is correct
22 Correct 2 ms 9564 KB Output is correct
23 Correct 2 ms 9564 KB Output is correct
24 Correct 2 ms 9564 KB Output is correct
25 Correct 2 ms 9564 KB Output is correct
26 Correct 2 ms 9564 KB Output is correct
27 Correct 2 ms 9564 KB Output is correct
28 Correct 2 ms 9564 KB Output is correct
29 Correct 2 ms 9564 KB Output is correct
30 Correct 2 ms 9564 KB Output is correct
31 Correct 10 ms 39004 KB Output is correct
32 Correct 10 ms 39096 KB Output is correct
33 Correct 11 ms 39084 KB Output is correct
34 Correct 10 ms 39072 KB Output is correct
35 Correct 11 ms 39004 KB Output is correct
36 Correct 10 ms 39004 KB Output is correct
37 Correct 10 ms 39112 KB Output is correct
38 Correct 11 ms 39004 KB Output is correct
39 Correct 10 ms 39004 KB Output is correct
40 Correct 10 ms 39004 KB Output is correct
41 Correct 338 ms 313172 KB Output is correct
42 Correct 325 ms 313424 KB Output is correct
43 Correct 308 ms 313368 KB Output is correct
44 Correct 313 ms 313404 KB Output is correct
45 Correct 315 ms 313400 KB Output is correct
46 Correct 312 ms 313480 KB Output is correct
47 Correct 315 ms 313364 KB Output is correct
48 Correct 333 ms 313428 KB Output is correct
49 Correct 320 ms 313732 KB Output is correct
50 Correct 304 ms 313492 KB Output is correct
51 Correct 313 ms 313724 KB Output is correct
52 Correct 312 ms 313480 KB Output is correct
53 Correct 314 ms 313424 KB Output is correct
54 Correct 301 ms 313484 KB Output is correct
55 Correct 305 ms 313428 KB Output is correct