oj.uz

Submission #1054741

# Submission time Handle Problem Language Result Execution time Memory
1054741 2024-08-12T11:53:20 Z Rojus Palembang Bridges (APIO15_bridge) C++14
22 / 100
 26 ms 4472 KB 
#include <bits/stdc++.h>

using namespace std;

int main()
{
    ios_base::sync_with_stdio(false); cin.tie(nullptr);
    int k, n;
    cin >> k >> n;
    vector<pair<int, int>> v;
    vector<int> sarasas;
    vector<pair<int, int>> vidurio_taskai;
    set<int> s;
    long long priedas=0;
    for(int i=0; i<n; i++)
    {
        char cg, cd;
        int ig, id;
        cin >> cg >> ig >> cd >> id;
        if(cg!=cd)
        {
            priedas++;
            v.push_back({ig, id});
            vidurio_taskai.push_back({(ig+id)/2, v.size()-1});
            sarasas.push_back(ig);
            sarasas.push_back(id);
        }
        else
        {
            priedas+=abs(ig-id);
        }
    }

    if(k==1)
    {
        sort(sarasas.begin(), sarasas.end());
        int tiltas=sarasas.size()/2;
        long long sum=priedas;
        for(int i=0; i<v.size(); i++)
        {
            sum+=abs(v[i].first-sarasas[tiltas])+abs(v[i].second-sarasas[tiltas]);
        }
        cout << sum;
    }
    else
    {
        sort(sarasas.begin(), sarasas.end());
        sort(vidurio_taskai.begin(), vidurio_taskai.end());
        priority_queue<int> dideli, mazi;
        long long suma_dideliu=0, suma_mazu=0;
        long long ats[vidurio_taskai.size()-1];

        for(int i=0; i<vidurio_taskai.size()-1; i++)
        {
            //cout << "Paimta " << i+1 << " poru: ";
            int x=v[vidurio_taskai[i].second].first;
            int y=v[vidurio_taskai[i].second].second;
            if(x<y) swap(x, y);
            if(dideli.size()==0)
            {
                dideli.push(-x);
                mazi.push(y);
                suma_dideliu+=x;
                suma_mazu+=y;
            }
            else
            {
                if(y>-dideli.top())
                {
                    suma_dideliu-=-dideli.top();
                    suma_mazu+=-dideli.top();
                    mazi.push(-dideli.top());
                    dideli.pop();
                    suma_dideliu+=x+y;
                    dideli.push(-x);
                    dideli.push(-y);
                }
                ///prielaida, kad abu i maziausius niekada neis
                else
                {
                    suma_dideliu+=x;
                    suma_mazu+=y;
                    dideli.push(-x);
                    mazi.push(y);
                }
            }
            //int mediana=-dideli.top();
            ats[i]=suma_dideliu-suma_mazu;
            //cout << ats[i][0] << endl;
        }
        ///-----------------------------------------
        while(!mazi.empty()) mazi.pop();
        while(!dideli.empty()) dideli.pop();
        suma_dideliu=0, suma_mazu=0;
        for(int i=vidurio_taskai.size()-1; i>0; i--)
        {
            //cout << "Paimta " << vidurio_taskai.size()-i << " poru nuo galo: ";
            int x=v[vidurio_taskai[i].second].first;
            int y=v[vidurio_taskai[i].second].second;
            if(x<y) swap(x, y);
            //cout << x << ' ' << y << "   ";
            if(dideli.size()==0)
            {
                dideli.push(-x);
                mazi.push(y);
                suma_dideliu+=x;
                suma_mazu+=y;
            }
            else
            {
                if(x>-dideli.top() || x>mazi.top())
                {
                    suma_dideliu+=x;
                    suma_mazu+=y;
                    dideli.push(-x);
                    mazi.push(y);
                }
                ///prielaida, kad abu i didziausius niekada neis
                else
                {
                    suma_mazu-=mazi.top();
                    suma_dideliu+=mazi.top();
                    dideli.push(-mazi.top());
                    mazi.pop();
                    suma_mazu+=x+y;
                    mazi.push(x);
                    mazi.push(y);
                }
            }
            //int mediana=-dideli.top();
            ats[i-1]+=suma_dideliu-suma_mazu;
            //cout << ats[i-1][1] << endl;

        }
        long long atsakymas=LONG_MAX;
        for(int i=0; i<v.size()-1; i++)
        {
            atsakymas=min(atsakymas, ats[i]);
        }
        atsakymas+=priedas;
        cout << atsakymas;
    }

    return 0;
}
/*
2 5
A 1 B 6
A 2 B 1
B 7 A 7
B 6 A 1
B 5 A 5
*/

Compilation message

bridge.cpp: In function 'int main()':
bridge.cpp:39:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   39 |         for(int i=0; i<v.size(); i++)
      |                      ~^~~~~~~~~
bridge.cpp:53:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   53 |         for(int i=0; i<vidurio_taskai.size()-1; i++)
      |                      ~^~~~~~~~~~~~~~~~~~~~~~~~
bridge.cpp:136:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
  136 |         for(int i=0; i<v.size()-1; i++)
      |                      ~^~~~~~~~~~~

Subtask #1
8.0 / 8.0

# 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 372 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 0 ms 512 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 348 KB Output is correct
10 Correct 0 ms 348 KB Output is correct
11 Correct 0 ms 348 KB Output is correct

Subtask #2
14.0 / 14.0

# 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 604 KB Output is correct
5 Correct 1 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 348 KB Output is correct
10 Correct 0 ms 348 KB Output is correct
11 Correct 0 ms 348 KB Output is correct
12 Correct 13 ms 3484 KB Output is correct
13 Correct 25 ms 4372 KB Output is correct
14 Correct 18 ms 3584 KB Output is correct
15 Correct 15 ms 2768 KB Output is correct
16 Correct 15 ms 4036 KB Output is correct
17 Correct 17 ms 4292 KB Output is correct
18 Correct 26 ms 4000 KB Output is correct
19 Correct 24 ms 4472 KB Output is correct
20 Correct 17 ms 4036 KB Output is correct
21 Correct 22 ms 4132 KB Output is correct

Subtask #3
0 / 9.0

# Verdict Execution time Memory Grader output
1 Runtime error 1 ms 348 KB Execution killed with signal 11
2 Halted 0 ms 0 KB -

Subtask #4
0 / 32.0

# Verdict Execution time Memory Grader output
1 Runtime error 1 ms 604 KB Execution killed with signal 11
2 Halted 0 ms 0 KB -

Subtask #5
0 / 37.0

# Verdict Execution time Memory Grader output
1 Runtime error 1 ms 348 KB Execution killed with signal 11
2 Halted 0 ms 0 KB -