oj.uz

Submission #771988

# Submission time Handle Problem Language Result Execution time Memory
771988 2023-07-03T13:18:53 Z Filya Group Photo (JOI21_ho_t3) C++14
44 / 100
 5000 ms 444 KB 
//♥God will make a way♥
 
//#include <bits/stdc++.h>
#define _CRT_SECURE_NO_WARNINGS
#include <iostream>
#include <string>
#include <algorithm>
#include <cmath>
#include <cstring>
#include <cassert>
#include <set>
#include <map>
#include <unordered_map>
#include <vector>
#include <stack>
#include <queue>
#include <iomanip>
#include <bitset>
#include <stdio.h>
#include <climits>
#include <numeric>
using namespace std;
//#include <ext/pb_ds/assoc_container.hpp>
//#include <ext/pb_ds/tree_policy.hpp>
//using namespace __gnu_pbds;
//template <typename T>
//using ordered_set = tree <T, null_type, less<T>, rb_tree_tag, tree_order_statistics_node_update>;
/////////////////////define/////////////////////
#define ci(x) if(x) cout << "YES" << '\n'; else cout << "NO" << '\n';
#define cii(x) if(check(x))
#define MOD 1000000007
#define MOD2 998244353
#define oo 1e9
#define ool 1e18L
#define pii pair<int, int>
#define pll pair<long long, long long>
#define mii map<int, int>
#define vi vector<int>
#define vpi vector<pair<int, int>>
#define vll vector <ll>
#define ff first
#define ss second
#define mp make_pair
#define ll long long
#define ld long double
#define pb push_back
#define eb emplace_back
#define pob pop_back
#define lb lower_bound
#define ub upper_bound
#define bs binary_search
#define sz(x) (int((x).size()))
#define all(x) (x).begin(), (x).end()
#define alll(x) (x), (x) + n
#define clr(x) (x).clear();
#define fri(x) for(int i = 0; i < x; ++i)
#define frj(x) for(int j = 0; j < x; ++j)
#define frp(x) for(int p = 0; p < x; ++p)
#define frr(a, b) for(int i = a; i < b; ++i)
#define frrj(a, b) for(int j = a; j < b; ++j)
#define fra(x) for(int i = 0; i < x; ++i) cin >> a[i];
#define frb(x) for(int i = 0; i < x; ++i) cin >> b[i];
#define frs(x) for(auto it = x.begin(); it != x.end(); ++it)
#define fr(x) for(auto it : x) //el
#define fastio ios_base::sync_with_stdio(false); cin.tie(0);
#define dbg(x) cerr << #x << ": " << x << endl;
#define ce(x) cout << x << endl;
#define uniq(x) x.resize(unique(all(x)) - x.begin()); //make all one after sorting
#define blt __builtin_popcount
/////////////////////print array, vector, deque, set, multiset, pair, map /////////////////////
void print(long long t) {cerr << t;}
void print(int t) {cerr << t;}
void print(string t) {cerr << t;}
void print(char t) {cerr << t;}
void print(double t) {cerr << t;}
void print(long double t) {cerr << t;}
void print(unsigned long long t) {cerr << t;}
template <class T, class V> void print(pair <T, V> p) {cerr << "{"; print(p.first); cerr << ","; print(p.second); cerr << "}";}
template <class T, class V> void print(T v[],V n) {cerr << "["; for(int i = 0; i < n; i++) {print(v[i]); cerr << " "; } cerr << "]"; cout << endl;}
template <class T> void print(vector <T> v) {cerr << "[ "; for (T i : v) {print(i); cerr << " ";} cerr << "]"; cout << endl;}
template <class T> void print(set <T> v) {cerr << "[ "; for (T i : v) {print(i); cerr << " ";} cerr << "]"; cout << endl;}
template <class T> void print(multiset <T> v) {cerr << "[ "; for (T i : v) {print(i); cerr << " ";} cerr << "]"; cout << endl;}
template <class T> void print(stack <T> v) {cerr << "[ "; stack<T> s = v; while(s.size()) {T i = s.top(); print(i); s.pop(); cerr << " ";} cerr << "]"; cout << endl;}
template <class T> void print(queue <T> v) {cerr << "[ "; queue<T> s = v; while(s.size()) {T i = s.front(); print(i); s.pop(); cerr << " ";} cerr << "]"; cout << endl;}
template <class T> void print(deque <T> v) {cerr << "[ "; deque<T> s = v; while(s.size()) {T i = s.front(); print(i); s.pop_front(); cerr << " ";} cerr << "]"; cout << endl;}
template <class T, class V> void print(map <T, V> v) {cerr << "[ "; for (auto i : v) {print(i); cerr << " ";} cerr << "]"; cout << endl;}
template <class T, class V> void print(unordered_map <T, V> v) {cerr << "[ "; for (auto i : v) {print(i); cerr << " ";} cerr << "]"; cout << endl;}
/////////////////////de/////////////////////
ll ans, a[5005], dp[5005], best[5005]; //i hat tiv unenq, verjin bloky p...j a(j>=p)
int id[5005];
struct fenwick {
    int size;
    vector<long long> tree;
    void init(int s) {
        tree.assign(s + 2, 0);
        size = s;
    }
    void upd(int u, long long v) {
        while(u <= size) {
            tree[u] += v;
            u += u & (-u);
        }
    } 
    long long qry(int u) {
        long long sum = 0;
        while(u > 0) {
            sum += tree[u];
            u -= u & (-u); // lsb
        }
        return sum;
    }
    long long sum(int l, int r) {
        return qry(r) - qry(l - 1);
    }
} ft1, ft2;
int main() {
    fastio;
    int n; cin >> n; fra(n)
    fri(n) id[a[i]] = i;
    frr(1, 1 + n) dp[i] = 1e18;
    frr(1, 1 + n) {
        // dbg(i)
        frrj(1, i+1) { //dp[j-1] ic upd enq anelu, j...i tvery shrjac vercnenq mer taza blokum
            // dbg(j)
            ll cost = 0;
            ft1.init(n+2); ft2.init(n+2);
            frrj(1, 1 + n) ft2.upd(j, 1);
            vector<pii> v;
            for(int p = i; p >= j; p--)
                v.pb({id[p], p});
            sort(all(v));
            int last = 0;
            ft2.upd(a[0], -1);
            for(auto it : v) {
                int p = it.ss;
                for(int i = last; i < id[p]; i++)
                    ft1.upd(a[i], 1);
                for(int i = last+1; i <= id[p]; i++)
                    ft2.upd(a[i], -1);
                last = id[p];
                cost += ft1.sum(i+1, n);
                cost += ft2.sum(p+1, i); 
                //if(a[t] > i) if(a[t] <= i && a[t] > p)
            }
            // dbg(cost)
            dp[i] = min(dp[i], dp[j-1] + cost);
        }
    }
    cout << dp[n];
    return 0;
}


/*
9
6 1 3 4 9 5 7 8 2
i: 1
j: 1
p: 1
cost: 1
i: 2
j: 1
p: 2
p: 1
cost: 9
j: 2
p: 2
cost: 7
i: 3
j: 1
p: 3
p: 2
p: 1
cost: 10
j: 2
p: 3
p: 2
cost: 7
j: 3
p: 3
cost: 1
i: 4
j: 1
p: 4
p: 3
p: 2
p: 1
cost: 12
j: 2
p: 4
p: 3
p: 2
cost: 8
j: 3
p: 4
p: 3
cost: 3
j: 4
p: 4
cost: 1
i: 5
j: 1
p: 5
p: 4
p: 3
p: 2
p: 1
cost: 16
j: 2
p: 5
p: 4
p: 3
p: 2
cost: 11
j: 3
p: 5
p: 4
p: 3
cost: 7
j: 4
p: 5
p: 4
cost: 4
j: 5
p: 5
cost: 2
i: 6
j: 1
p: 6
p: 5
p: 4
p: 3
p: 2
p: 1
cost: 11
j: 2
p: 6
p: 5
p: 4
p: 3
p: 2
cost: 7
j: 3
p: 6
p: 5
p: 4
p: 3
cost: 4
j: 4
p: 6
p: 5
p: 4
cost: 2
j: 5
p: 6
p: 5
cost: 1
j: 6
p: 6
cost: 0
i: 7
j: 1
p: 7
p: 6
p: 5
p: 4
p: 3
p: 2
p: 1
cost: 16
j: 2
p: 7
p: 6
p: 5
p: 4
p: 3
p: 2
cost: 11
j: 3
p: 7
p: 6
p: 5
p: 4
p: 3
cost: 9
j: 4
p: 7
p: 6
p: 5
p: 4
cost: 6
j: 5
p: 7
p: 6
p: 5
cost: 4
j: 6
p: 7
p: 6
cost: 2
j: 7
p: 7
cost: 1
i: 8
j: 1
p: 8
p: 7
p: 6
p: 5
p: 4
p: 3
p: 2
p: 1
cost: 22
j: 2
p: 8
p: 7
p: 6
p: 5
p: 4
p: 3
p: 2
cost: 16
j: 3
p: 8
p: 7
p: 6
p: 5
p: 4
p: 3
cost: 15
j: 4
p: 8
p: 7
p: 6
p: 5
p: 4
cost: 11
j: 5
p: 8
p: 7
p: 6
p: 5
cost: 8
j: 6
p: 8
p: 7
p: 6
cost: 5
j: 7
p: 8
p: 7
cost: 3
j: 8
p: 8
cost: 1
i: 9
j: 1
p: 9
p: 8
p: 7
p: 6
p: 5
p: 4
p: 3
p: 2
p: 1
cost: 22
j: 2
p: 9
p: 8
p: 7
p: 6
p: 5
p: 4
p: 3
p: 2
cost: 15
j: 3
p: 9
p: 8
p: 7
p: 6
p: 5
p: 4
p: 3
cost: 15
j: 4
p: 9
p: 8
p: 7
p: 6
p: 5
p: 4
cost: 10
j: 5
p: 9
p: 8
p: 7
p: 6
p: 5
cost: 6
j: 6
p: 9
p: 8
p: 7
p: 6
cost: 4
j: 7
p: 9
p: 8
p: 7
cost: 1
j: 8
p: 9
p: 8
cost: 0
j: 9
p: 9
cost: 0
*/

Subtask #1
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 0 ms 212 KB Output is correct
3 Correct 1 ms 324 KB Output is correct
4 Correct 0 ms 212 KB Output is correct
5 Correct 1 ms 212 KB Output is correct
6 Correct 0 ms 212 KB Output is correct
7 Correct 1 ms 212 KB Output is correct
8 Correct 0 ms 212 KB Output is correct
9 Correct 0 ms 212 KB Output is correct
10 Correct 0 ms 212 KB Output is correct

Subtask #2
7.0 / 7.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 0 ms 212 KB Output is correct
3 Correct 1 ms 324 KB Output is correct
4 Correct 0 ms 212 KB Output is correct
5 Correct 1 ms 212 KB Output is correct
6 Correct 0 ms 212 KB Output is correct
7 Correct 1 ms 212 KB Output is correct
8 Correct 0 ms 212 KB Output is correct
9 Correct 0 ms 212 KB Output is correct
10 Correct 0 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 212 KB Output is correct
16 Correct 1 ms 212 KB Output is correct
17 Correct 1 ms 212 KB Output is correct
18 Correct 1 ms 212 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 0 ms 212 KB Output is correct
2 Correct 0 ms 212 KB Output is correct
3 Correct 1 ms 324 KB Output is correct
4 Correct 0 ms 212 KB Output is correct
5 Correct 1 ms 212 KB Output is correct
6 Correct 0 ms 212 KB Output is correct
7 Correct 1 ms 212 KB Output is correct
8 Correct 0 ms 212 KB Output is correct
9 Correct 0 ms 212 KB Output is correct
10 Correct 0 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 212 KB Output is correct
16 Correct 1 ms 212 KB Output is correct
17 Correct 1 ms 212 KB Output is correct
18 Correct 1 ms 212 KB Output is correct
19 Correct 1 ms 212 KB Output is correct
20 Correct 1 ms 212 KB Output is correct
21 Correct 109 ms 444 KB Output is correct
22 Correct 110 ms 212 KB Output is correct
23 Correct 110 ms 324 KB Output is correct
24 Correct 109 ms 340 KB Output is correct
25 Correct 109 ms 324 KB Output is correct
26 Correct 115 ms 348 KB Output is correct
27 Correct 113 ms 212 KB Output is correct
28 Correct 110 ms 320 KB Output is correct
29 Correct 110 ms 316 KB Output is correct
30 Correct 113 ms 320 KB Output is correct

Subtask #4
0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 0 ms 212 KB Output is correct
3 Correct 1 ms 324 KB Output is correct
4 Correct 0 ms 212 KB Output is correct
5 Correct 1 ms 212 KB Output is correct
6 Correct 0 ms 212 KB Output is correct
7 Correct 1 ms 212 KB Output is correct
8 Correct 0 ms 212 KB Output is correct
9 Correct 0 ms 212 KB Output is correct
10 Correct 0 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 212 KB Output is correct
16 Correct 1 ms 212 KB Output is correct
17 Correct 1 ms 212 KB Output is correct
18 Correct 1 ms 212 KB Output is correct
19 Correct 1 ms 212 KB Output is correct
20 Correct 1 ms 212 KB Output is correct
21 Correct 109 ms 444 KB Output is correct
22 Correct 110 ms 212 KB Output is correct
23 Correct 110 ms 324 KB Output is correct
24 Correct 109 ms 340 KB Output is correct
25 Correct 109 ms 324 KB Output is correct
26 Correct 115 ms 348 KB Output is correct
27 Correct 113 ms 212 KB Output is correct
28 Correct 110 ms 320 KB Output is correct
29 Correct 110 ms 316 KB Output is correct
30 Correct 113 ms 320 KB Output is correct
31 Execution timed out 5018 ms 360 KB Time limit exceeded
32 Halted 0 ms 0 KB -

Subtask #5
0 / 36.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 0 ms 212 KB Output is correct
3 Correct 1 ms 324 KB Output is correct
4 Correct 0 ms 212 KB Output is correct
5 Correct 1 ms 212 KB Output is correct
6 Correct 0 ms 212 KB Output is correct
7 Correct 1 ms 212 KB Output is correct
8 Correct 0 ms 212 KB Output is correct
9 Correct 0 ms 212 KB Output is correct
10 Correct 0 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 212 KB Output is correct
16 Correct 1 ms 212 KB Output is correct
17 Correct 1 ms 212 KB Output is correct
18 Correct 1 ms 212 KB Output is correct
19 Correct 1 ms 212 KB Output is correct
20 Correct 1 ms 212 KB Output is correct
21 Correct 109 ms 444 KB Output is correct
22 Correct 110 ms 212 KB Output is correct
23 Correct 110 ms 324 KB Output is correct
24 Correct 109 ms 340 KB Output is correct
25 Correct 109 ms 324 KB Output is correct
26 Correct 115 ms 348 KB Output is correct
27 Correct 113 ms 212 KB Output is correct
28 Correct 110 ms 320 KB Output is correct
29 Correct 110 ms 316 KB Output is correct
30 Correct 113 ms 320 KB Output is correct
31 Execution timed out 5018 ms 360 KB Time limit exceeded
32 Halted 0 ms 0 KB -