oj.uz

Submission #884663

# Submission time Handle Problem Language Result Execution time Memory
884663 2023-12-08T02:19:20 Z AlphaMale06 Group Photo (JOI21_ho_t3) C++14
100 / 100
 358 ms 97572 KB 
#include <bits/stdc++.h>

using namespace std;

const int N = 5003;
int f[N];
int cst[N][N];
int dp[N];

int lsb(int i){
    return i&-i;
}

void upd(int ind, int val){
    for(int i=ind; i<N; i+=lsb(i))f[i]+=val;
}

int get(int l){
    int ret=0;
    for(int i=l; i>0; i-=lsb(i))ret+=f[i];
    return ret;
}

int get(int l, int r){
    return get(r)-get(l-1);
}

void calccost(int a[], int n){
    for(int i=1; i<=n; i++){
        int sz=n-i+1;
        int pos[n+1];
        int b[sz];
        int skip=0;
        for(int j=0; j< n; j++){
            if(a[j]<i)skip++;
            else b[j-skip]=a[j];
            pos[a[j]]=j-skip+1;
        }
        int numinv=0;
        int sumpos=0;
        for(int j=i; j<=n; j++){
            upd(pos[j], 1);
            numinv+=get(0, pos[j]-1);
            sumpos+=pos[j];
            sumpos-=j-i+1;
            cst[i][j]=numinv+sumpos;
        }
        for(int j=0; j<N; j++){
            f[j]=0;
        }
    }
}

int main()
{
    ios_base::sync_with_stdio(0);
    cin.tie(0);
    int n;
    cin >> n;
    int a[n];
    for(int i=0; i< n; i++)cin >> a[i];
    calccost(a, n);
    for(int i=1; i<=n; i++){
        dp[i]=1e9;
        for(int j=i-1; j>=0; j--){
            dp[i]=min(dp[i], dp[j]+cst[j+1][i]);
        }
    }
    cout << dp[n] << '\n';
}

Compilation message

Main.cpp: In function 'void calccost(int*, int)':
Main.cpp:32:13: warning: variable 'b' set but not used [-Wunused-but-set-variable]
   32 |         int b[sz];
      |             ^

Subtask #1
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 348 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 344 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 604 KB Output is correct
7 Correct 0 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 1 ms 348 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 344 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 604 KB Output is correct
7 Correct 0 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 0 ms 2396 KB Output is correct
15 Correct 0 ms 2508 KB Output is correct
16 Correct 1 ms 2392 KB Output is correct
17 Correct 1 ms 2488 KB Output is correct
18 Correct 1 ms 2392 KB Output is correct
19 Correct 1 ms 2396 KB Output is correct
20 Correct 0 ms 2396 KB Output is correct

Subtask #3
32.0 / 32.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 348 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 344 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 604 KB Output is correct
7 Correct 0 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 0 ms 2396 KB Output is correct
15 Correct 0 ms 2508 KB Output is correct
16 Correct 1 ms 2392 KB Output is correct
17 Correct 1 ms 2488 KB Output is correct
18 Correct 1 ms 2392 KB Output is correct
19 Correct 1 ms 2396 KB Output is correct
20 Correct 0 ms 2396 KB Output is correct
21 Correct 1 ms 4444 KB Output is correct
22 Correct 1 ms 4444 KB Output is correct
23 Correct 2 ms 4444 KB Output is correct
24 Correct 1 ms 4444 KB Output is correct
25 Correct 1 ms 4444 KB Output is correct
26 Correct 1 ms 4440 KB Output is correct
27 Correct 1 ms 4444 KB Output is correct
28 Correct 1 ms 4444 KB Output is correct
29 Correct 1 ms 4440 KB Output is correct
30 Correct 2 ms 4564 KB Output is correct

Subtask #4
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 348 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 344 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 604 KB Output is correct
7 Correct 0 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 0 ms 2396 KB Output is correct
15 Correct 0 ms 2508 KB Output is correct
16 Correct 1 ms 2392 KB Output is correct
17 Correct 1 ms 2488 KB Output is correct
18 Correct 1 ms 2392 KB Output is correct
19 Correct 1 ms 2396 KB Output is correct
20 Correct 0 ms 2396 KB Output is correct
21 Correct 1 ms 4444 KB Output is correct
22 Correct 1 ms 4444 KB Output is correct
23 Correct 2 ms 4444 KB Output is correct
24 Correct 1 ms 4444 KB Output is correct
25 Correct 1 ms 4444 KB Output is correct
26 Correct 1 ms 4440 KB Output is correct
27 Correct 1 ms 4444 KB Output is correct
28 Correct 1 ms 4444 KB Output is correct
29 Correct 1 ms 4440 KB Output is correct
30 Correct 2 ms 4564 KB Output is correct
31 Correct 10 ms 16732 KB Output is correct
32 Correct 10 ms 16884 KB Output is correct
33 Correct 9 ms 16848 KB Output is correct
34 Correct 10 ms 16732 KB Output is correct
35 Correct 9 ms 16940 KB Output is correct
36 Correct 10 ms 16732 KB Output is correct
37 Correct 9 ms 16732 KB Output is correct
38 Correct 9 ms 16732 KB Output is correct
39 Correct 10 ms 16944 KB Output is correct
40 Correct 9 ms 16732 KB Output is correct

Subtask #5
36.0 / 36.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 348 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 344 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 604 KB Output is correct
7 Correct 0 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 0 ms 2396 KB Output is correct
15 Correct 0 ms 2508 KB Output is correct
16 Correct 1 ms 2392 KB Output is correct
17 Correct 1 ms 2488 KB Output is correct
18 Correct 1 ms 2392 KB Output is correct
19 Correct 1 ms 2396 KB Output is correct
20 Correct 0 ms 2396 KB Output is correct
21 Correct 1 ms 4444 KB Output is correct
22 Correct 1 ms 4444 KB Output is correct
23 Correct 2 ms 4444 KB Output is correct
24 Correct 1 ms 4444 KB Output is correct
25 Correct 1 ms 4444 KB Output is correct
26 Correct 1 ms 4440 KB Output is correct
27 Correct 1 ms 4444 KB Output is correct
28 Correct 1 ms 4444 KB Output is correct
29 Correct 1 ms 4440 KB Output is correct
30 Correct 2 ms 4564 KB Output is correct
31 Correct 10 ms 16732 KB Output is correct
32 Correct 10 ms 16884 KB Output is correct
33 Correct 9 ms 16848 KB Output is correct
34 Correct 10 ms 16732 KB Output is correct
35 Correct 9 ms 16940 KB Output is correct
36 Correct 10 ms 16732 KB Output is correct
37 Correct 9 ms 16732 KB Output is correct
38 Correct 9 ms 16732 KB Output is correct
39 Correct 10 ms 16944 KB Output is correct
40 Correct 9 ms 16732 KB Output is correct
41 Correct 330 ms 97280 KB Output is correct
42 Correct 327 ms 97360 KB Output is correct
43 Correct 358 ms 97360 KB Output is correct
44 Correct 327 ms 97364 KB Output is correct
45 Correct 328 ms 97240 KB Output is correct
46 Correct 334 ms 97572 KB Output is correct
47 Correct 329 ms 97212 KB Output is correct
48 Correct 326 ms 97360 KB Output is correct
49 Correct 332 ms 97364 KB Output is correct
50 Correct 329 ms 97200 KB Output is correct
51 Correct 327 ms 97224 KB Output is correct
52 Correct 332 ms 97468 KB Output is correct
53 Correct 329 ms 97344 KB Output is correct
54 Correct 334 ms 97364 KB Output is correct
55 Correct 328 ms 97364 KB Output is correct