oj.uz

Submission #922163

# Submission time Handle Problem Language Result Execution time Memory
922163 2024-02-05T07:48:50 Z asdasdqwer Palembang Bridges (APIO15_bridge) C++14
22 / 100
 84 ms 5072 KB 
#include <bits/stdc++.h>
using namespace std;

#define int int64_t
#define pii array<int,2>

struct cmp {
    bool operator()(const pii &x, const pii &y) {
        return (x[0] + x[1]) < (y[0] + y[1]);
    }
};

signed main() {
    int k, n;cin>>k>>n;
    vector<pii> dif;
    int dis = 0;
    for (int i=0;i<n;i++) {
        char c1,c2;
        int p1,p2;
        cin>>c1>>p1>>c2>>p2;
        if (c1 == c2) {
            dis += abs(p1-p2);
        }
        else {
            dif.push_back({p1,p2});
        }
    }

    if (dif.size() == 0) {
        cout<<dis<<"\n";
        return 0;
    }

    if (k == 1 || dif.size() == 1) {

        vector<int> al;
        for (auto x:dif) {
            al.push_back(x[0]);
            al.push_back(x[1]);
        }

        sort(al.begin(),al.end());

        int med = al[al.size() / 2];

        for (int x:al) {
            dis += abs(x - med);
        }

        dis += dif.size();

        cout<<dis<<"\n";

        return 0;
    }

    sort(dif.begin(),dif.end(), cmp());

    multiset<int> m1, m2;
    int s1 = 0, s2 = 0;

    function<void(int)> insert=[&](int num) {
        m1.insert(num);
        s1 += num;
        while ((m1.size() > m2.size() && ((m1.size() + m2.size()) % 2 == 0)) ||
                (m1.size() - 1 > m2.size() && ((m1.size() + m2.size()) % 2 == 1))) {
            num = *m1.rbegin();
            m1.erase(m1.find(num));
            m2.insert(num);
            s1 -= num;
            s2 += num;
        }
    };

    vector<int> cst1;
    vector<int> tmp1;
    for (auto x:dif) {
        insert(x[0]);
        insert(x[1]);
        int med = *m1.rbegin();
        tmp1.push_back(med);
        cst1.push_back((m1.size() * med - s1) + (s2 - m2.size() * med));
    }

    reverse(dif.begin(),dif.end());
    vector<int> cst2;
    vector<int> tmp2;
    m1.clear();m2.clear();
    s1=s2=0;
    for (auto x:dif) {
        insert(x[0]);
        insert(x[1]);
        int med = *m1.rbegin();
        tmp2.push_back(med);
        cst2.push_back((m1.size() * med - s1) + (s2 - m2.size() * med));
    }

    reverse(cst2.begin(),cst2.end());
    reverse(tmp2.begin(), tmp2.end());
    int res = 1e17;

    for (int i=1;i<cst1.size();i++) {
        res = min(res, cst1[i-1] + cst2[i]);
    }

    res += dif.size();

    cout<<res+dis<<"\n";
}

Compilation message

bridge.cpp: In function 'int main()':
bridge.cpp:102:19: warning: comparison of integer expressions of different signedness: 'int64_t' {aka 'long int'} and 'std::vector<long int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
  102 |     for (int i=1;i<cst1.size();i++) {
      |                  ~^~~~~~~~~~~~

Subtask #1
8.0 / 8.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 500 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 1 ms 348 KB Output is correct
4 Correct 1 ms 348 KB Output is correct
5 Correct 1 ms 348 KB Output is correct
6 Correct 1 ms 348 KB Output is correct
7 Correct 1 ms 348 KB Output is correct
8 Correct 1 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 1 ms 348 KB Output is correct

Subtask #2
14.0 / 14.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 344 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 1 ms 348 KB Output is correct
4 Correct 1 ms 348 KB Output is correct
5 Correct 1 ms 348 KB Output is correct
6 Correct 1 ms 348 KB Output is correct
7 Correct 1 ms 348 KB Output is correct
8 Correct 1 ms 348 KB Output is correct
9 Correct 1 ms 348 KB Output is correct
10 Correct 1 ms 460 KB Output is correct
11 Correct 2 ms 348 KB Output is correct
12 Correct 39 ms 5000 KB Output is correct
13 Correct 84 ms 5052 KB Output is correct
14 Correct 53 ms 4800 KB Output is correct
15 Correct 46 ms 2756 KB Output is correct
16 Correct 56 ms 4920 KB Output is correct
17 Correct 68 ms 5056 KB Output is correct
18 Correct 67 ms 5072 KB Output is correct
19 Correct 83 ms 5056 KB Output is correct
20 Correct 60 ms 5060 KB Output is correct
21 Correct 69 ms 4880 KB Output is correct

Subtask #3
0 / 9.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 344 KB Output is correct
2 Correct 0 ms 344 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Incorrect 0 ms 348 KB Output isn't correct
5 Halted 0 ms 0 KB -

Subtask #4
0 / 32.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 344 KB Output is correct
2 Correct 1 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Incorrect 1 ms 348 KB Output isn't correct
5 Halted 0 ms 0 KB -

Subtask #5
0 / 37.0

# 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 1 ms 348 KB Output is correct
4 Incorrect 0 ms 372 KB Output isn't correct
5 Halted 0 ms 0 KB -