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Submission #944174

# Submission time Handle Problem Language Result Execution time Memory
944174 2024-03-12T09:31:40 Z Tsagana Group Photo (JOI21_ho_t3) C++14
100 / 100
 799 ms 392652 KB 
#include<bits/stdc++.h>

#define IOS ios_base::sync_with_stdio(false);cin.tie();cout.tie();
#define all(x) x.begin(), x.end()
#define int long long
#define pq priority_queue
#define lb lower_bound
#define ub upper_bound
#define pb push_back
#define mset multiset
#define F first
#define S second

using namespace std;

int n;
vector<vector<int > > dp(5001, vector<int >(5001, 0));
vector<vector<int > > psum(5001, vector<int >(5001, 0));

int inv(int up, int val, int p)
{
	int cnt = 0;
	cnt += psum[up][p] - psum[val - 1][p];
	cnt += psum[val - 1][n] - psum[val - 1][p];
	return cnt;
}
void solve ()
{
	cin >> n;
    vector<int > arr(n+1), pos(n+1);
    for (int i = 1; i <= n; i++)
    {
    	cin >> arr[i];
    	pos[arr[i]] = i;
    } 
    
    dp[1][1] = 0;
    psum[1][pos[1]] = 1;
    for (int i = 1; i <= n; i++) psum[1][i] += psum[1][i-1];
    for (int i = 2; i <= n; i++)
    {
		dp[i][i] = 1e9;
        for (int j = 1; j < i; j++)
        {
            dp[i][j] = dp[i - 1][j] + inv(i - 1, j, pos[i]);
            dp[i][i] = min(dp[i][i], dp[i - 1][j] + inv(i - 1, i, pos[i]));
        }
        for (int j = 1; j <= i; j++) psum[i][pos[j]]++;
        for (int j = 1; j <= n; j++) psum[i][j] += psum[i][j - 1];
    }
    int ans = 1e9;
    for (int i = 1; i <= n; i++) ans = min(ans, dp[n][i]);
    cout << ans;
}
signed main(){IOS solve(); return 0;}

Subtask #1
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 192 ms 392316 KB Output is correct
2 Correct 183 ms 392256 KB Output is correct
3 Correct 171 ms 392180 KB Output is correct
4 Correct 179 ms 392076 KB Output is correct
5 Correct 164 ms 392280 KB Output is correct
6 Correct 162 ms 392140 KB Output is correct
7 Correct 164 ms 392124 KB Output is correct
8 Correct 170 ms 392272 KB Output is correct
9 Correct 170 ms 392272 KB Output is correct
10 Correct 168 ms 392160 KB Output is correct

Subtask #2
7.0 / 7.0

# Verdict Execution time Memory Grader output
1 Correct 192 ms 392316 KB Output is correct
2 Correct 183 ms 392256 KB Output is correct
3 Correct 171 ms 392180 KB Output is correct
4 Correct 179 ms 392076 KB Output is correct
5 Correct 164 ms 392280 KB Output is correct
6 Correct 162 ms 392140 KB Output is correct
7 Correct 164 ms 392124 KB Output is correct
8 Correct 170 ms 392272 KB Output is correct
9 Correct 170 ms 392272 KB Output is correct
10 Correct 168 ms 392160 KB Output is correct
11 Correct 166 ms 392272 KB Output is correct
12 Correct 164 ms 392220 KB Output is correct
13 Correct 170 ms 392196 KB Output is correct
14 Correct 169 ms 392148 KB Output is correct
15 Correct 214 ms 392268 KB Output is correct
16 Correct 163 ms 392276 KB Output is correct
17 Correct 209 ms 392240 KB Output is correct
18 Correct 177 ms 392272 KB Output is correct
19 Correct 162 ms 392272 KB Output is correct
20 Correct 167 ms 392164 KB Output is correct

Subtask #3
32.0 / 32.0

# Verdict Execution time Memory Grader output
1 Correct 192 ms 392316 KB Output is correct
2 Correct 183 ms 392256 KB Output is correct
3 Correct 171 ms 392180 KB Output is correct
4 Correct 179 ms 392076 KB Output is correct
5 Correct 164 ms 392280 KB Output is correct
6 Correct 162 ms 392140 KB Output is correct
7 Correct 164 ms 392124 KB Output is correct
8 Correct 170 ms 392272 KB Output is correct
9 Correct 170 ms 392272 KB Output is correct
10 Correct 168 ms 392160 KB Output is correct
11 Correct 166 ms 392272 KB Output is correct
12 Correct 164 ms 392220 KB Output is correct
13 Correct 170 ms 392196 KB Output is correct
14 Correct 169 ms 392148 KB Output is correct
15 Correct 214 ms 392268 KB Output is correct
16 Correct 163 ms 392276 KB Output is correct
17 Correct 209 ms 392240 KB Output is correct
18 Correct 177 ms 392272 KB Output is correct
19 Correct 162 ms 392272 KB Output is correct
20 Correct 167 ms 392164 KB Output is correct
21 Correct 180 ms 392192 KB Output is correct
22 Correct 178 ms 392256 KB Output is correct
23 Correct 176 ms 392308 KB Output is correct
24 Correct 166 ms 392348 KB Output is correct
25 Correct 183 ms 392120 KB Output is correct
26 Correct 165 ms 392532 KB Output is correct
27 Correct 165 ms 392216 KB Output is correct
28 Correct 163 ms 392084 KB Output is correct
29 Correct 176 ms 392536 KB Output is correct
30 Correct 177 ms 392160 KB Output is correct

Subtask #4
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 192 ms 392316 KB Output is correct
2 Correct 183 ms 392256 KB Output is correct
3 Correct 171 ms 392180 KB Output is correct
4 Correct 179 ms 392076 KB Output is correct
5 Correct 164 ms 392280 KB Output is correct
6 Correct 162 ms 392140 KB Output is correct
7 Correct 164 ms 392124 KB Output is correct
8 Correct 170 ms 392272 KB Output is correct
9 Correct 170 ms 392272 KB Output is correct
10 Correct 168 ms 392160 KB Output is correct
11 Correct 166 ms 392272 KB Output is correct
12 Correct 164 ms 392220 KB Output is correct
13 Correct 170 ms 392196 KB Output is correct
14 Correct 169 ms 392148 KB Output is correct
15 Correct 214 ms 392268 KB Output is correct
16 Correct 163 ms 392276 KB Output is correct
17 Correct 209 ms 392240 KB Output is correct
18 Correct 177 ms 392272 KB Output is correct
19 Correct 162 ms 392272 KB Output is correct
20 Correct 167 ms 392164 KB Output is correct
21 Correct 180 ms 392192 KB Output is correct
22 Correct 178 ms 392256 KB Output is correct
23 Correct 176 ms 392308 KB Output is correct
24 Correct 166 ms 392348 KB Output is correct
25 Correct 183 ms 392120 KB Output is correct
26 Correct 165 ms 392532 KB Output is correct
27 Correct 165 ms 392216 KB Output is correct
28 Correct 163 ms 392084 KB Output is correct
29 Correct 176 ms 392536 KB Output is correct
30 Correct 177 ms 392160 KB Output is correct
31 Correct 189 ms 392276 KB Output is correct
32 Correct 178 ms 392196 KB Output is correct
33 Correct 169 ms 392088 KB Output is correct
34 Correct 182 ms 392292 KB Output is correct
35 Correct 170 ms 392528 KB Output is correct
36 Correct 169 ms 392204 KB Output is correct
37 Correct 174 ms 392276 KB Output is correct
38 Correct 173 ms 392280 KB Output is correct
39 Correct 173 ms 392268 KB Output is correct
40 Correct 172 ms 392100 KB Output is correct

Subtask #5
36.0 / 36.0

# Verdict Execution time Memory Grader output
1 Correct 192 ms 392316 KB Output is correct
2 Correct 183 ms 392256 KB Output is correct
3 Correct 171 ms 392180 KB Output is correct
4 Correct 179 ms 392076 KB Output is correct
5 Correct 164 ms 392280 KB Output is correct
6 Correct 162 ms 392140 KB Output is correct
7 Correct 164 ms 392124 KB Output is correct
8 Correct 170 ms 392272 KB Output is correct
9 Correct 170 ms 392272 KB Output is correct
10 Correct 168 ms 392160 KB Output is correct
11 Correct 166 ms 392272 KB Output is correct
12 Correct 164 ms 392220 KB Output is correct
13 Correct 170 ms 392196 KB Output is correct
14 Correct 169 ms 392148 KB Output is correct
15 Correct 214 ms 392268 KB Output is correct
16 Correct 163 ms 392276 KB Output is correct
17 Correct 209 ms 392240 KB Output is correct
18 Correct 177 ms 392272 KB Output is correct
19 Correct 162 ms 392272 KB Output is correct
20 Correct 167 ms 392164 KB Output is correct
21 Correct 180 ms 392192 KB Output is correct
22 Correct 178 ms 392256 KB Output is correct
23 Correct 176 ms 392308 KB Output is correct
24 Correct 166 ms 392348 KB Output is correct
25 Correct 183 ms 392120 KB Output is correct
26 Correct 165 ms 392532 KB Output is correct
27 Correct 165 ms 392216 KB Output is correct
28 Correct 163 ms 392084 KB Output is correct
29 Correct 176 ms 392536 KB Output is correct
30 Correct 177 ms 392160 KB Output is correct
31 Correct 189 ms 392276 KB Output is correct
32 Correct 178 ms 392196 KB Output is correct
33 Correct 169 ms 392088 KB Output is correct
34 Correct 182 ms 392292 KB Output is correct
35 Correct 170 ms 392528 KB Output is correct
36 Correct 169 ms 392204 KB Output is correct
37 Correct 174 ms 392276 KB Output is correct
38 Correct 173 ms 392280 KB Output is correct
39 Correct 173 ms 392268 KB Output is correct
40 Correct 172 ms 392100 KB Output is correct
41 Correct 741 ms 392416 KB Output is correct
42 Correct 748 ms 392532 KB Output is correct
43 Correct 762 ms 392412 KB Output is correct
44 Correct 732 ms 392420 KB Output is correct
45 Correct 758 ms 392416 KB Output is correct
46 Correct 739 ms 392420 KB Output is correct
47 Correct 762 ms 392416 KB Output is correct
48 Correct 785 ms 392268 KB Output is correct
49 Correct 739 ms 392652 KB Output is correct
50 Correct 740 ms 392456 KB Output is correct
51 Correct 784 ms 392420 KB Output is correct
52 Correct 784 ms 392412 KB Output is correct
53 Correct 795 ms 392412 KB Output is correct
54 Correct 799 ms 392412 KB Output is correct
55 Correct 729 ms 392412 KB Output is correct