oj.uz

Submission #978995

# Submission time Handle Problem Language Result Execution time Memory
978995 2024-05-10T05:40:06 Z penguin133 Group Photo (JOI21_ho_t3) C++17
64 / 100
 5000 ms 117432 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], 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];
		}
	}
	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;
			}
			for(int k = j; k <= i; k++){
				int tmp = P[k][i] - P[k][k];
				//cnt += i - k - tmp;
				cnt += tmp;
			}
			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:51:1: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type]
   51 | main(){
      | ^~~~

Subtask #1
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 344 KB Output is correct
2 Correct 1 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 1 ms 348 KB Output is correct
7 Correct 0 ms 348 KB Output is correct
8 Correct 0 ms 348 KB Output is correct
9 Correct 0 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 0 ms 344 KB Output is correct
2 Correct 1 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 1 ms 348 KB Output is correct
7 Correct 0 ms 348 KB Output is correct
8 Correct 0 ms 348 KB Output is correct
9 Correct 0 ms 348 KB Output is correct
10 Correct 0 ms 348 KB Output is correct
11 Correct 1 ms 344 KB Output is correct
12 Correct 0 ms 348 KB Output is correct
13 Correct 0 ms 348 KB Output is correct
14 Correct 0 ms 348 KB Output is correct
15 Correct 1 ms 344 KB Output is correct
16 Correct 1 ms 344 KB Output is correct
17 Correct 1 ms 344 KB Output is correct
18 Correct 1 ms 348 KB Output is correct
19 Correct 0 ms 348 KB Output is correct
20 Correct 0 ms 468 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 1 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 1 ms 348 KB Output is correct
7 Correct 0 ms 348 KB Output is correct
8 Correct 0 ms 348 KB Output is correct
9 Correct 0 ms 348 KB Output is correct
10 Correct 0 ms 348 KB Output is correct
11 Correct 1 ms 344 KB Output is correct
12 Correct 0 ms 348 KB Output is correct
13 Correct 0 ms 348 KB Output is correct
14 Correct 0 ms 348 KB Output is correct
15 Correct 1 ms 344 KB Output is correct
16 Correct 1 ms 344 KB Output is correct
17 Correct 1 ms 344 KB Output is correct
18 Correct 1 ms 348 KB Output is correct
19 Correct 0 ms 348 KB Output is correct
20 Correct 0 ms 468 KB Output is correct
21 Correct 3 ms 1372 KB Output is correct
22 Correct 3 ms 1372 KB Output is correct
23 Correct 3 ms 1372 KB Output is correct
24 Correct 5 ms 1628 KB Output is correct
25 Correct 3 ms 1372 KB Output is correct
26 Correct 3 ms 1240 KB Output is correct
27 Correct 4 ms 1372 KB Output is correct
28 Correct 3 ms 1456 KB Output is correct
29 Correct 3 ms 1372 KB Output is correct
30 Correct 3 ms 1372 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 1 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 1 ms 348 KB Output is correct
7 Correct 0 ms 348 KB Output is correct
8 Correct 0 ms 348 KB Output is correct
9 Correct 0 ms 348 KB Output is correct
10 Correct 0 ms 348 KB Output is correct
11 Correct 1 ms 344 KB Output is correct
12 Correct 0 ms 348 KB Output is correct
13 Correct 0 ms 348 KB Output is correct
14 Correct 0 ms 348 KB Output is correct
15 Correct 1 ms 344 KB Output is correct
16 Correct 1 ms 344 KB Output is correct
17 Correct 1 ms 344 KB Output is correct
18 Correct 1 ms 348 KB Output is correct
19 Correct 0 ms 348 KB Output is correct
20 Correct 0 ms 468 KB Output is correct
21 Correct 3 ms 1372 KB Output is correct
22 Correct 3 ms 1372 KB Output is correct
23 Correct 3 ms 1372 KB Output is correct
24 Correct 5 ms 1628 KB Output is correct
25 Correct 3 ms 1372 KB Output is correct
26 Correct 3 ms 1240 KB Output is correct
27 Correct 4 ms 1372 KB Output is correct
28 Correct 3 ms 1456 KB Output is correct
29 Correct 3 ms 1372 KB Output is correct
30 Correct 3 ms 1372 KB Output is correct
31 Correct 223 ms 6232 KB Output is correct
32 Correct 221 ms 6236 KB Output is correct
33 Correct 224 ms 6236 KB Output is correct
34 Correct 225 ms 6236 KB Output is correct
35 Correct 219 ms 6236 KB Output is correct
36 Correct 226 ms 6236 KB Output is correct
37 Correct 216 ms 6236 KB Output is correct
38 Correct 220 ms 6232 KB Output is correct
39 Correct 266 ms 6232 KB Output is correct
40 Correct 223 ms 6236 KB Output is correct

Subtask #5
0 / 36.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 344 KB Output is correct
2 Correct 1 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 1 ms 348 KB Output is correct
7 Correct 0 ms 348 KB Output is correct
8 Correct 0 ms 348 KB Output is correct
9 Correct 0 ms 348 KB Output is correct
10 Correct 0 ms 348 KB Output is correct
11 Correct 1 ms 344 KB Output is correct
12 Correct 0 ms 348 KB Output is correct
13 Correct 0 ms 348 KB Output is correct
14 Correct 0 ms 348 KB Output is correct
15 Correct 1 ms 344 KB Output is correct
16 Correct 1 ms 344 KB Output is correct
17 Correct 1 ms 344 KB Output is correct
18 Correct 1 ms 348 KB Output is correct
19 Correct 0 ms 348 KB Output is correct
20 Correct 0 ms 468 KB Output is correct
21 Correct 3 ms 1372 KB Output is correct
22 Correct 3 ms 1372 KB Output is correct
23 Correct 3 ms 1372 KB Output is correct
24 Correct 5 ms 1628 KB Output is correct
25 Correct 3 ms 1372 KB Output is correct
26 Correct 3 ms 1240 KB Output is correct
27 Correct 4 ms 1372 KB Output is correct
28 Correct 3 ms 1456 KB Output is correct
29 Correct 3 ms 1372 KB Output is correct
30 Correct 3 ms 1372 KB Output is correct
31 Correct 223 ms 6232 KB Output is correct
32 Correct 221 ms 6236 KB Output is correct
33 Correct 224 ms 6236 KB Output is correct
34 Correct 225 ms 6236 KB Output is correct
35 Correct 219 ms 6236 KB Output is correct
36 Correct 226 ms 6236 KB Output is correct
37 Correct 216 ms 6236 KB Output is correct
38 Correct 220 ms 6232 KB Output is correct
39 Correct 266 ms 6232 KB Output is correct
40 Correct 223 ms 6236 KB Output is correct
41 Execution timed out 5041 ms 117432 KB Time limit exceeded
42 Halted 0 ms 0 KB -