oj.uz

Submission #870860

# Submission time Handle Problem Language Result Execution time Memory
870860 2023-11-09T10:17:20 Z adhityamv Group Photo (JOI21_ho_t3) C++17
100 / 100
 341 ms 1100 KB 
#include <bits/stdc++.h>
using namespace std;
#define ll long long
#define mp make_pair
#define pii pair<ii,ii>
#define fi first
#define se second
int n;
ll bit[5001];
ll get(int ind){
    ll ans=0;
    ind++;
    while(ind>0){
        ans+=bit[ind];
        ind-=(ind&(-ind));
    }
    return ans;
}
void update(int ind,int val){
    ind++;
    while(ind<=n){
        bit[ind]+=val;
        ind+=(ind&(-ind));
    }
}
void solve(){
    cin >> n;
    int a[n];
    for(int i=0;i<n;i++){
        cin >> a[i];
        a[i]--;
    }
    int ainv[n];
    for(int i=0;i<n;i++) ainv[a[i]]=i;
    ll dp[n+1];
    dp[0]=0;
    for(ll i=1;i<=n;i++){
        int b[i];
        int ind=0;
        for(int j=0;j<n;j++){
            if(a[j]<i){
                b[ind]=a[j];
                ind++;
            }
        }
        ll binv[i];
        for(int j=0;j<i;j++) binv[b[j]]=j;
        for(int j=0;j<=i;j++) bit[j]=0;
        dp[i]=1000000000000000000;
        ll tadd=0;
        for(ll j=1;j<=i;j++){
            tadd+=get(i-1-binv[i-j]);
            update(i-1-binv[i-j],1);
            tadd+=(i-j-binv[i-j]);
            dp[i]=min(dp[i],tadd+dp[i-j]);
        }
    }
    cout << dp[n];
}
signed main(){
    ios_base::sync_with_stdio(false);
    cin.tie(NULL);
    int t;
    //cin >> t;
    t=1;
    while(t--) solve();
}

Compilation message

Main.cpp: In function 'void solve()':
Main.cpp:33:9: warning: variable 'ainv' set but not used [-Wunused-but-set-variable]
   33 |     int ainv[n];
      |         ^~~~

Subtask #1
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 0 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 0 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 344 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 348 KB Output is correct
2 Correct 0 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 0 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 344 KB Output is correct
10 Correct 0 ms 348 KB Output is correct
11 Correct 0 ms 348 KB Output is correct
12 Correct 0 ms 348 KB Output is correct
13 Correct 0 ms 348 KB Output is correct
14 Correct 1 ms 348 KB Output is correct
15 Correct 0 ms 348 KB Output is correct
16 Correct 0 ms 348 KB Output is correct
17 Correct 0 ms 348 KB Output is correct
18 Correct 0 ms 348 KB Output is correct
19 Correct 0 ms 348 KB Output is correct
20 Correct 1 ms 344 KB Output is correct

Subtask #3
32.0 / 32.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 0 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 0 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 344 KB Output is correct
10 Correct 0 ms 348 KB Output is correct
11 Correct 0 ms 348 KB Output is correct
12 Correct 0 ms 348 KB Output is correct
13 Correct 0 ms 348 KB Output is correct
14 Correct 1 ms 348 KB Output is correct
15 Correct 0 ms 348 KB Output is correct
16 Correct 0 ms 348 KB Output is correct
17 Correct 0 ms 348 KB Output is correct
18 Correct 0 ms 348 KB Output is correct
19 Correct 0 ms 348 KB Output is correct
20 Correct 1 ms 344 KB Output is correct
21 Correct 1 ms 348 KB Output is correct
22 Correct 1 ms 348 KB Output is correct
23 Correct 1 ms 344 KB Output is correct
24 Correct 1 ms 348 KB Output is correct
25 Correct 1 ms 348 KB Output is correct
26 Correct 1 ms 600 KB Output is correct
27 Correct 1 ms 348 KB Output is correct
28 Correct 1 ms 348 KB Output is correct
29 Correct 1 ms 348 KB Output is correct
30 Correct 1 ms 460 KB Output is correct

Subtask #4
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 0 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 0 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 344 KB Output is correct
10 Correct 0 ms 348 KB Output is correct
11 Correct 0 ms 348 KB Output is correct
12 Correct 0 ms 348 KB Output is correct
13 Correct 0 ms 348 KB Output is correct
14 Correct 1 ms 348 KB Output is correct
15 Correct 0 ms 348 KB Output is correct
16 Correct 0 ms 348 KB Output is correct
17 Correct 0 ms 348 KB Output is correct
18 Correct 0 ms 348 KB Output is correct
19 Correct 0 ms 348 KB Output is correct
20 Correct 1 ms 344 KB Output is correct
21 Correct 1 ms 348 KB Output is correct
22 Correct 1 ms 348 KB Output is correct
23 Correct 1 ms 344 KB Output is correct
24 Correct 1 ms 348 KB Output is correct
25 Correct 1 ms 348 KB Output is correct
26 Correct 1 ms 600 KB Output is correct
27 Correct 1 ms 348 KB Output is correct
28 Correct 1 ms 348 KB Output is correct
29 Correct 1 ms 348 KB Output is correct
30 Correct 1 ms 460 KB Output is correct
31 Correct 7 ms 348 KB Output is correct
32 Correct 7 ms 484 KB Output is correct
33 Correct 7 ms 348 KB Output is correct
34 Correct 7 ms 480 KB Output is correct
35 Correct 7 ms 348 KB Output is correct
36 Correct 7 ms 480 KB Output is correct
37 Correct 7 ms 488 KB Output is correct
38 Correct 7 ms 344 KB Output is correct
39 Correct 7 ms 344 KB Output is correct
40 Correct 8 ms 348 KB Output is correct

Subtask #5
36.0 / 36.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 0 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 0 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 344 KB Output is correct
10 Correct 0 ms 348 KB Output is correct
11 Correct 0 ms 348 KB Output is correct
12 Correct 0 ms 348 KB Output is correct
13 Correct 0 ms 348 KB Output is correct
14 Correct 1 ms 348 KB Output is correct
15 Correct 0 ms 348 KB Output is correct
16 Correct 0 ms 348 KB Output is correct
17 Correct 0 ms 348 KB Output is correct
18 Correct 0 ms 348 KB Output is correct
19 Correct 0 ms 348 KB Output is correct
20 Correct 1 ms 344 KB Output is correct
21 Correct 1 ms 348 KB Output is correct
22 Correct 1 ms 348 KB Output is correct
23 Correct 1 ms 344 KB Output is correct
24 Correct 1 ms 348 KB Output is correct
25 Correct 1 ms 348 KB Output is correct
26 Correct 1 ms 600 KB Output is correct
27 Correct 1 ms 348 KB Output is correct
28 Correct 1 ms 348 KB Output is correct
29 Correct 1 ms 348 KB Output is correct
30 Correct 1 ms 460 KB Output is correct
31 Correct 7 ms 348 KB Output is correct
32 Correct 7 ms 484 KB Output is correct
33 Correct 7 ms 348 KB Output is correct
34 Correct 7 ms 480 KB Output is correct
35 Correct 7 ms 348 KB Output is correct
36 Correct 7 ms 480 KB Output is correct
37 Correct 7 ms 488 KB Output is correct
38 Correct 7 ms 344 KB Output is correct
39 Correct 7 ms 344 KB Output is correct
40 Correct 8 ms 348 KB Output is correct
41 Correct 330 ms 1100 KB Output is correct
42 Correct 331 ms 848 KB Output is correct
43 Correct 327 ms 852 KB Output is correct
44 Correct 339 ms 596 KB Output is correct
45 Correct 326 ms 824 KB Output is correct
46 Correct 323 ms 592 KB Output is correct
47 Correct 341 ms 844 KB Output is correct
48 Correct 331 ms 576 KB Output is correct
49 Correct 329 ms 864 KB Output is correct
50 Correct 324 ms 864 KB Output is correct
51 Correct 322 ms 596 KB Output is correct
52 Correct 325 ms 464 KB Output is correct
53 Correct 329 ms 572 KB Output is correct
54 Correct 330 ms 628 KB Output is correct
55 Correct 323 ms 852 KB Output is correct