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답안 #532748

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
532748 2022-03-03T19:57:02 Z Rafi22 Group Photo (JOI21_ho_t3) C++14
100 / 100
 288 ms 67652 KB 
#include <bits/stdc++.h>

using namespace std;

#define endl '\n'
#define st first
#define nd second
#define pb push_back
#define sz(x) (int)(x).size()
#define all(x) (x).begin(), (x).end()
#define ll long long
ll mod=1000000007;
int inf=1000000007;
ll infl=1000000000000000007;

int a[5007];
int ile[5007][5007];
int DP[5007];

int main()
{
    ios_base::sync_with_stdio(0);
    cin.tie(0);
    cout.tie(0);
    int n;
    cin>>n;
    for(int i=1;i<=n;i++) cin>>a[i];
    int inv=0;
    for(int i=1;i<=n;i++)
    {
        for(int j=1;j<i;j++)
        {
            if(a[j]>a[i])
            {
                inv++;
                ile[min(a[i],a[j])][max(a[i],a[j])]++;
            }
        }
    }
    for(int k=0;k<n;k++)
    {
        for(int i=1;i+k<=n;i++)
        {
            int j=i+k;
            ile[i][j]+=ile[i+1][j]+ile[i][j-1]-ile[i+1][j-1];
        }
    }
    for(int i=1;i<=n;i++)
    {
        DP[i]=inf;
        for(int j=i-1;j>=0;j--)
        {
            DP[i]=min(DP[i],DP[j]+(i-j)*(i-j-1)/2-2*ile[j+1][i]);
        }
    }
    cout<<inv+DP[n];
    return 0;
}

Subtask #1
5.0 / 5.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 332 KB Output is correct
2 Correct 1 ms 332 KB Output is correct
3 Correct 1 ms 332 KB Output is correct
4 Correct 0 ms 332 KB Output is correct
5 Correct 0 ms 332 KB Output is correct
6 Correct 1 ms 332 KB Output is correct
7 Correct 1 ms 332 KB Output is correct
8 Correct 1 ms 332 KB Output is correct
9 Correct 1 ms 332 KB Output is correct
10 Correct 1 ms 316 KB Output is correct

Subtask #2
7.0 / 7.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 332 KB Output is correct
2 Correct 1 ms 332 KB Output is correct
3 Correct 1 ms 332 KB Output is correct
4 Correct 0 ms 332 KB Output is correct
5 Correct 0 ms 332 KB Output is correct
6 Correct 1 ms 332 KB Output is correct
7 Correct 1 ms 332 KB Output is correct
8 Correct 1 ms 332 KB Output is correct
9 Correct 1 ms 332 KB Output is correct
10 Correct 1 ms 316 KB Output is correct
11 Correct 1 ms 324 KB Output is correct
12 Correct 1 ms 320 KB Output is correct
13 Correct 0 ms 332 KB Output is correct
14 Correct 1 ms 332 KB Output is correct
15 Correct 1 ms 332 KB Output is correct
16 Correct 1 ms 332 KB Output is correct
17 Correct 1 ms 332 KB Output is correct
18 Correct 1 ms 332 KB Output is correct
19 Correct 1 ms 332 KB Output is correct
20 Correct 1 ms 332 KB Output is correct

Subtask #3
32.0 / 32.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 332 KB Output is correct
2 Correct 1 ms 332 KB Output is correct
3 Correct 1 ms 332 KB Output is correct
4 Correct 0 ms 332 KB Output is correct
5 Correct 0 ms 332 KB Output is correct
6 Correct 1 ms 332 KB Output is correct
7 Correct 1 ms 332 KB Output is correct
8 Correct 1 ms 332 KB Output is correct
9 Correct 1 ms 332 KB Output is correct
10 Correct 1 ms 316 KB Output is correct
11 Correct 1 ms 324 KB Output is correct
12 Correct 1 ms 320 KB Output is correct
13 Correct 0 ms 332 KB Output is correct
14 Correct 1 ms 332 KB Output is correct
15 Correct 1 ms 332 KB Output is correct
16 Correct 1 ms 332 KB Output is correct
17 Correct 1 ms 332 KB Output is correct
18 Correct 1 ms 332 KB Output is correct
19 Correct 1 ms 332 KB Output is correct
20 Correct 1 ms 332 KB Output is correct
21 Correct 1 ms 1100 KB Output is correct
22 Correct 1 ms 1100 KB Output is correct
23 Correct 1 ms 1100 KB Output is correct
24 Correct 1 ms 1100 KB Output is correct
25 Correct 2 ms 1220 KB Output is correct
26 Correct 1 ms 1100 KB Output is correct
27 Correct 1 ms 1100 KB Output is correct
28 Correct 1 ms 1100 KB Output is correct
29 Correct 1 ms 1100 KB Output is correct
30 Correct 1 ms 1100 KB Output is correct

Subtask #4
20.0 / 20.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 332 KB Output is correct
2 Correct 1 ms 332 KB Output is correct
3 Correct 1 ms 332 KB Output is correct
4 Correct 0 ms 332 KB Output is correct
5 Correct 0 ms 332 KB Output is correct
6 Correct 1 ms 332 KB Output is correct
7 Correct 1 ms 332 KB Output is correct
8 Correct 1 ms 332 KB Output is correct
9 Correct 1 ms 332 KB Output is correct
10 Correct 1 ms 316 KB Output is correct
11 Correct 1 ms 324 KB Output is correct
12 Correct 1 ms 320 KB Output is correct
13 Correct 0 ms 332 KB Output is correct
14 Correct 1 ms 332 KB Output is correct
15 Correct 1 ms 332 KB Output is correct
16 Correct 1 ms 332 KB Output is correct
17 Correct 1 ms 332 KB Output is correct
18 Correct 1 ms 332 KB Output is correct
19 Correct 1 ms 332 KB Output is correct
20 Correct 1 ms 332 KB Output is correct
21 Correct 1 ms 1100 KB Output is correct
22 Correct 1 ms 1100 KB Output is correct
23 Correct 1 ms 1100 KB Output is correct
24 Correct 1 ms 1100 KB Output is correct
25 Correct 2 ms 1220 KB Output is correct
26 Correct 1 ms 1100 KB Output is correct
27 Correct 1 ms 1100 KB Output is correct
28 Correct 1 ms 1100 KB Output is correct
29 Correct 1 ms 1100 KB Output is correct
30 Correct 1 ms 1100 KB Output is correct
31 Correct 4 ms 4800 KB Output is correct
32 Correct 4 ms 4684 KB Output is correct
33 Correct 5 ms 4684 KB Output is correct
34 Correct 4 ms 4812 KB Output is correct
35 Correct 5 ms 4812 KB Output is correct
36 Correct 5 ms 4812 KB Output is correct
37 Correct 4 ms 4812 KB Output is correct
38 Correct 4 ms 4720 KB Output is correct
39 Correct 4 ms 4812 KB Output is correct
40 Correct 4 ms 4812 KB Output is correct

Subtask #5
36.0 / 36.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 332 KB Output is correct
2 Correct 1 ms 332 KB Output is correct
3 Correct 1 ms 332 KB Output is correct
4 Correct 0 ms 332 KB Output is correct
5 Correct 0 ms 332 KB Output is correct
6 Correct 1 ms 332 KB Output is correct
7 Correct 1 ms 332 KB Output is correct
8 Correct 1 ms 332 KB Output is correct
9 Correct 1 ms 332 KB Output is correct
10 Correct 1 ms 316 KB Output is correct
11 Correct 1 ms 324 KB Output is correct
12 Correct 1 ms 320 KB Output is correct
13 Correct 0 ms 332 KB Output is correct
14 Correct 1 ms 332 KB Output is correct
15 Correct 1 ms 332 KB Output is correct
16 Correct 1 ms 332 KB Output is correct
17 Correct 1 ms 332 KB Output is correct
18 Correct 1 ms 332 KB Output is correct
19 Correct 1 ms 332 KB Output is correct
20 Correct 1 ms 332 KB Output is correct
21 Correct 1 ms 1100 KB Output is correct
22 Correct 1 ms 1100 KB Output is correct
23 Correct 1 ms 1100 KB Output is correct
24 Correct 1 ms 1100 KB Output is correct
25 Correct 2 ms 1220 KB Output is correct
26 Correct 1 ms 1100 KB Output is correct
27 Correct 1 ms 1100 KB Output is correct
28 Correct 1 ms 1100 KB Output is correct
29 Correct 1 ms 1100 KB Output is correct
30 Correct 1 ms 1100 KB Output is correct
31 Correct 4 ms 4800 KB Output is correct
32 Correct 4 ms 4684 KB Output is correct
33 Correct 5 ms 4684 KB Output is correct
34 Correct 4 ms 4812 KB Output is correct
35 Correct 5 ms 4812 KB Output is correct
36 Correct 5 ms 4812 KB Output is correct
37 Correct 4 ms 4812 KB Output is correct
38 Correct 4 ms 4720 KB Output is correct
39 Correct 4 ms 4812 KB Output is correct
40 Correct 4 ms 4812 KB Output is correct
41 Correct 264 ms 67296 KB Output is correct
42 Correct 281 ms 67328 KB Output is correct
43 Correct 258 ms 67376 KB Output is correct
44 Correct 286 ms 67268 KB Output is correct
45 Correct 272 ms 67432 KB Output is correct
46 Correct 288 ms 67268 KB Output is correct
47 Correct 274 ms 67268 KB Output is correct
48 Correct 286 ms 67372 KB Output is correct
49 Correct 269 ms 67316 KB Output is correct
50 Correct 270 ms 67652 KB Output is correct
51 Correct 278 ms 67276 KB Output is correct
52 Correct 264 ms 67480 KB Output is correct
53 Correct 267 ms 67420 KB Output is correct
54 Correct 266 ms 67268 KB Output is correct
55 Correct 277 ms 67320 KB Output is correct