oj.uz

Submission #929130

# Submission time Handle Problem Language Result Execution time Memory
929130 2024-02-17T18:28:33 Z Karoot Studentsko (COCI14_studentsko) C++17
100 / 100
 4 ms 1068 KB 
#include <iostream>
#include <cmath>
#include <unordered_map>
#include <map>
#include <set>
#include <queue>
#include <vector>
#include <string>
#include <iomanip>
#include <algorithm>

#define all(x)  (x).begin(), (x).end()
#define rall(x)  (x).rbegin(), (x).rend()

using namespace std;

typedef long long ll;

ll linf = 1e15+1;

inline void scoobydoobydoo(){
    ios::sync_with_stdio(false);
    ios_base::sync_with_stdio(false);
    cin.tie(NULL); cout.tie(NULL);
}

map<ll, ll> valToIndex;

int main(){
    scoobydoobydoo();
    int n, k; cin >> n >> k;
    vector<int> v(n);

    for (int i = 0; i < n; i++)cin >> v[i];

    vector<int> t = v;

    sort(rall(t));

    for (int i = 0; i < n; i++){
        valToIndex[t[i]] = i/k + 1;
    }

    for (int i = 0; i < n; i++)v[i] = valToIndex[v[i]];
    reverse(all(v));

    //for (int i = 0; i < n; i++)cout << v[i] << " ";
    //cout << endl;

    set<pair<ll, ll> > s; //value, dp
 
    ll dp[200001];
 
    if (v.size() == 0){
        cout << n << endl;
        return 0;
    }
 
    dp[0] = 1;
    s.insert({0, 0});
    s.insert({v[0], 1});
    for (int i = 1; i < v.size(); i++){
        auto it = s.upper_bound({v[i], 10000000});
        it--;
        dp[i] = (*it).second + 1;
        if ((*it).first == v[i])s.erase(it);
        s.insert({v[i], dp[i]});
 
        while (true){
            auto itr = s.find({v[i], dp[i]});
            itr++;
            if (itr == s.end())break;
            if ((*itr).second > dp[i])break;
            s.erase(itr);
        }
    
    }

    cout << n - (*s.rbegin()).second << endl;

    



    return 0;
}

Compilation message

studentsko.cpp: In function 'int main()':
studentsko.cpp:62:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   62 |     for (int i = 1; i < v.size(); i++){
      |                     ~~^~~~~~~~~~

Subtask #1
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 348 KB Output is correct
2 Correct 0 ms 456 KB Output is correct

Subtask #2
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 348 KB Output is correct
2 Correct 0 ms 348 KB Output is correct

Subtask #3
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 348 KB Output is correct
2 Correct 0 ms 348 KB Output is correct

Subtask #4
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 604 KB Output is correct

Subtask #5
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 860 KB Output is correct

Subtask #6
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 600 KB Output is correct
2 Correct 3 ms 604 KB Output is correct

Subtask #7
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 604 KB Output is correct
2 Correct 3 ms 860 KB Output is correct

Subtask #8
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 860 KB Output is correct
2 Correct 2 ms 604 KB Output is correct

Subtask #9
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 860 KB Output is correct
2 Correct 3 ms 604 KB Output is correct

Subtask #10
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 4 ms 1068 KB Output is correct
2 Correct 3 ms 600 KB Output is correct