oj.uz

Submission #580969

# Submission time Handle Problem Language Result Execution time Memory
580969 2022-06-22T07:11:40 Z Theo830 Group Photo (JOI21_ho_t3) C++17
100 / 100
 917 ms 587880 KB 
#include <bits/stdc++.h>
using namespace std;
typedef long long ll;
const ll INF = 1e18+7;
const ll MOD = 998244353;
typedef pair<ll,ll> ii;
#define iii pair<ll,ii>
#define ull unsigned ll
#define f(i,a,b) for(ll i = a;i < b;i++)
#define pb push_back
#define vll vector<ll>
#define F first
#define S second
#define all(x) (x).begin(), (x).end()
///I hope I will get uprating and don't make mistakes
///I will never stop programming
///sqrt(-1) Love C++
///Please don't hack me
///@TheofanisOrfanou Theo830
///Think different approaches (bs,dp,greedy,graphs,shortest paths,mst)
///Stay Calm
///Look for special cases
///Beware of overflow and array bounds
///Think the problem backwards
///Training
int main(void){
    ios_base::sync_with_stdio(0);
    cin.tie(0);
    ll n;
    cin>>n;
    ll arr[n];
    ll pre[n+1][n+1][3];
    ll pos[n+1];
    f(i,0,n){
        cin>>arr[i];
        pos[arr[i]] = i;
    }
    f(i,0,n+1){
        f(j,0,n+1){
            pre[i][j][0] = pre[i][j][1] = pre[i][j][2] = 0;
        }
    }
    f(i,1,n+1){
        f(j,i+1,n+1){
            pre[i][j][1] = pre[i][j-1][1] + (pos[i] > pos[j]);
        }
    }
    f(j,1,n+1){
        f(i,1,j+1){
            pre[j][i][0] = pre[j][i-1][0] + (pos[i] < pos[j]);
            pre[j][i][2] = pre[j][i-1][2] + (pos[i] > pos[j]);
        }
    }
    ll dp[n+1] = {0};
    for(ll i = n-1;i >= 0;i--){
        dp[i] = 1e18;
        ll sum = 0,sumi = 0;
        f(j,i+1,n+1){
            sum += pre[j][j][0] - pre[j][i][0];
            sumi += pre[j][n][1] - pre[j][j][1];
            sumi -= pre[j][j][2] - pre[j][i][2];
            dp[i] = min(dp[i],dp[j] + sum + sumi);
        }
    }
    cout<<dp[0]<<"\n";
}

Subtask #1
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 212 KB Output is correct
2 Correct 1 ms 212 KB Output is correct
3 Correct 1 ms 212 KB Output is correct
4 Correct 0 ms 212 KB Output is correct
5 Correct 1 ms 212 KB Output is correct
6 Correct 1 ms 212 KB Output is correct
7 Correct 1 ms 212 KB Output is correct
8 Correct 1 ms 212 KB Output is correct
9 Correct 0 ms 212 KB Output is correct
10 Correct 1 ms 212 KB Output is correct

Subtask #2
7.0 / 7.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 212 KB Output is correct
2 Correct 1 ms 212 KB Output is correct
3 Correct 1 ms 212 KB Output is correct
4 Correct 0 ms 212 KB Output is correct
5 Correct 1 ms 212 KB Output is correct
6 Correct 1 ms 212 KB Output is correct
7 Correct 1 ms 212 KB Output is correct
8 Correct 1 ms 212 KB Output is correct
9 Correct 0 ms 212 KB Output is correct
10 Correct 1 ms 212 KB Output is correct
11 Correct 1 ms 212 KB Output is correct
12 Correct 1 ms 212 KB Output is correct
13 Correct 1 ms 212 KB Output is correct
14 Correct 1 ms 212 KB Output is correct
15 Correct 1 ms 320 KB Output is correct
16 Correct 1 ms 320 KB Output is correct
17 Correct 1 ms 212 KB Output is correct
18 Correct 1 ms 316 KB Output is correct
19 Correct 1 ms 212 KB Output is correct
20 Correct 1 ms 212 KB Output is correct

Subtask #3
32.0 / 32.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 212 KB Output is correct
2 Correct 1 ms 212 KB Output is correct
3 Correct 1 ms 212 KB Output is correct
4 Correct 0 ms 212 KB Output is correct
5 Correct 1 ms 212 KB Output is correct
6 Correct 1 ms 212 KB Output is correct
7 Correct 1 ms 212 KB Output is correct
8 Correct 1 ms 212 KB Output is correct
9 Correct 0 ms 212 KB Output is correct
10 Correct 1 ms 212 KB Output is correct
11 Correct 1 ms 212 KB Output is correct
12 Correct 1 ms 212 KB Output is correct
13 Correct 1 ms 212 KB Output is correct
14 Correct 1 ms 212 KB Output is correct
15 Correct 1 ms 320 KB Output is correct
16 Correct 1 ms 320 KB Output is correct
17 Correct 1 ms 212 KB Output is correct
18 Correct 1 ms 316 KB Output is correct
19 Correct 1 ms 212 KB Output is correct
20 Correct 1 ms 212 KB Output is correct
21 Correct 1 ms 1236 KB Output is correct
22 Correct 1 ms 1236 KB Output is correct
23 Correct 1 ms 1236 KB Output is correct
24 Correct 1 ms 1236 KB Output is correct
25 Correct 1 ms 1236 KB Output is correct
26 Correct 1 ms 1236 KB Output is correct
27 Correct 1 ms 1236 KB Output is correct
28 Correct 1 ms 1236 KB Output is correct
29 Correct 1 ms 1236 KB Output is correct
30 Correct 1 ms 1216 KB Output is correct

Subtask #4
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 212 KB Output is correct
2 Correct 1 ms 212 KB Output is correct
3 Correct 1 ms 212 KB Output is correct
4 Correct 0 ms 212 KB Output is correct
5 Correct 1 ms 212 KB Output is correct
6 Correct 1 ms 212 KB Output is correct
7 Correct 1 ms 212 KB Output is correct
8 Correct 1 ms 212 KB Output is correct
9 Correct 0 ms 212 KB Output is correct
10 Correct 1 ms 212 KB Output is correct
11 Correct 1 ms 212 KB Output is correct
12 Correct 1 ms 212 KB Output is correct
13 Correct 1 ms 212 KB Output is correct
14 Correct 1 ms 212 KB Output is correct
15 Correct 1 ms 320 KB Output is correct
16 Correct 1 ms 320 KB Output is correct
17 Correct 1 ms 212 KB Output is correct
18 Correct 1 ms 316 KB Output is correct
19 Correct 1 ms 212 KB Output is correct
20 Correct 1 ms 212 KB Output is correct
21 Correct 1 ms 1236 KB Output is correct
22 Correct 1 ms 1236 KB Output is correct
23 Correct 1 ms 1236 KB Output is correct
24 Correct 1 ms 1236 KB Output is correct
25 Correct 1 ms 1236 KB Output is correct
26 Correct 1 ms 1236 KB Output is correct
27 Correct 1 ms 1236 KB Output is correct
28 Correct 1 ms 1236 KB Output is correct
29 Correct 1 ms 1236 KB Output is correct
30 Correct 1 ms 1216 KB Output is correct
31 Correct 21 ms 15316 KB Output is correct
32 Correct 15 ms 15316 KB Output is correct
33 Correct 15 ms 15368 KB Output is correct
34 Correct 17 ms 15316 KB Output is correct
35 Correct 15 ms 15316 KB Output is correct
36 Correct 14 ms 15292 KB Output is correct
37 Correct 16 ms 15444 KB Output is correct
38 Correct 15 ms 15404 KB Output is correct
39 Correct 16 ms 15316 KB Output is correct
40 Correct 15 ms 15316 KB Output is correct

Subtask #5
36.0 / 36.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 212 KB Output is correct
2 Correct 1 ms 212 KB Output is correct
3 Correct 1 ms 212 KB Output is correct
4 Correct 0 ms 212 KB Output is correct
5 Correct 1 ms 212 KB Output is correct
6 Correct 1 ms 212 KB Output is correct
7 Correct 1 ms 212 KB Output is correct
8 Correct 1 ms 212 KB Output is correct
9 Correct 0 ms 212 KB Output is correct
10 Correct 1 ms 212 KB Output is correct
11 Correct 1 ms 212 KB Output is correct
12 Correct 1 ms 212 KB Output is correct
13 Correct 1 ms 212 KB Output is correct
14 Correct 1 ms 212 KB Output is correct
15 Correct 1 ms 320 KB Output is correct
16 Correct 1 ms 320 KB Output is correct
17 Correct 1 ms 212 KB Output is correct
18 Correct 1 ms 316 KB Output is correct
19 Correct 1 ms 212 KB Output is correct
20 Correct 1 ms 212 KB Output is correct
21 Correct 1 ms 1236 KB Output is correct
22 Correct 1 ms 1236 KB Output is correct
23 Correct 1 ms 1236 KB Output is correct
24 Correct 1 ms 1236 KB Output is correct
25 Correct 1 ms 1236 KB Output is correct
26 Correct 1 ms 1236 KB Output is correct
27 Correct 1 ms 1236 KB Output is correct
28 Correct 1 ms 1236 KB Output is correct
29 Correct 1 ms 1236 KB Output is correct
30 Correct 1 ms 1216 KB Output is correct
31 Correct 21 ms 15316 KB Output is correct
32 Correct 15 ms 15316 KB Output is correct
33 Correct 15 ms 15368 KB Output is correct
34 Correct 17 ms 15316 KB Output is correct
35 Correct 15 ms 15316 KB Output is correct
36 Correct 14 ms 15292 KB Output is correct
37 Correct 16 ms 15444 KB Output is correct
38 Correct 15 ms 15404 KB Output is correct
39 Correct 16 ms 15316 KB Output is correct
40 Correct 15 ms 15316 KB Output is correct
41 Correct 887 ms 587140 KB Output is correct
42 Correct 905 ms 587292 KB Output is correct
43 Correct 839 ms 587540 KB Output is correct
44 Correct 870 ms 587596 KB Output is correct
45 Correct 888 ms 587516 KB Output is correct
46 Correct 912 ms 587760 KB Output is correct
47 Correct 917 ms 587724 KB Output is correct
48 Correct 836 ms 587708 KB Output is correct
49 Correct 825 ms 587712 KB Output is correct
50 Correct 812 ms 587756 KB Output is correct
51 Correct 801 ms 587756 KB Output is correct
52 Correct 804 ms 587760 KB Output is correct
53 Correct 839 ms 587808 KB Output is correct
54 Correct 816 ms 587880 KB Output is correct
55 Correct 797 ms 587724 KB Output is correct