oj.uz

Submission #1054779

# Submission time Handle Problem Language Result Execution time Memory
1054779 2024-08-12T12:05:53 Z Rojus Palembang Bridges (APIO15_bridge) C++14
22 / 100
 24 ms 2964 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;
        int dydis= max(int(vidurio_taskai.size()-1), 0);
        long long ats[dydis];

        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=ats[0];
        for(int i=1; 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:54:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   54 |         for(int i=0; i<vidurio_taskai.size()-1; i++)
      |                      ~^~~~~~~~~~~~~~~~~~~~~~~~
bridge.cpp:137:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
  137 |         for(int i=1; i<v.size()-1; i++)
      |                      ~^~~~~~~~~~~

Subtask #1
8.0 / 8.0

# 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 1 ms 348 KB Output is correct
8 Correct 0 ms 344 KB Output is correct
9 Correct 1 ms 344 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 344 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 0 ms 348 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 1 ms 348 KB Output is correct
10 Correct 1 ms 348 KB Output is correct
11 Correct 0 ms 348 KB Output is correct
12 Correct 12 ms 2964 KB Output is correct
13 Correct 24 ms 2764 KB Output is correct
14 Correct 21 ms 2512 KB Output is correct
15 Correct 14 ms 2000 KB Output is correct
16 Correct 23 ms 2748 KB Output is correct
17 Correct 17 ms 2768 KB Output is correct
18 Correct 24 ms 2756 KB Output is correct
19 Correct 23 ms 2752 KB Output is correct
20 Correct 15 ms 2756 KB Output is correct
21 Correct 21 ms 2964 KB Output is correct

Subtask #3
0 / 9.0

# Verdict Execution time Memory Grader output
1 Runtime error 0 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 348 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 344 KB Execution killed with signal 11
2 Halted 0 ms 0 KB -