oj.uz

Submission #922159

# Submission time Handle Problem Language Result Execution time Memory
922159 2024-02-05T07:45:53 Z asdasdqwer Palembang Bridges (APIO15_bridge) C++14
22 / 100
 82 ms 7376 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 (k == 1) {
        if (dif.size() == 0) {
            cout<<dis<<"\n";
            return 0;
        }

        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:101:19: 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]
  101 |     for (int i=1;i<cst1.size();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 440 KB Output is correct
3 Correct 1 ms 348 KB Output is correct
4 Correct 1 ms 448 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 444 KB Output is correct
9 Correct 1 ms 348 KB Output is correct
10 Correct 1 ms 344 KB Output is correct
11 Correct 1 ms 344 KB Output is correct

Subtask #2
14.0 / 14.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 348 KB Output is correct
2 Correct 1 ms 348 KB Output is correct
3 Correct 1 ms 436 KB Output is correct
4 Correct 1 ms 344 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 440 KB Output is correct
9 Correct 1 ms 344 KB Output is correct
10 Correct 1 ms 348 KB Output is correct
11 Correct 1 ms 348 KB Output is correct
12 Correct 45 ms 5980 KB Output is correct
13 Correct 82 ms 7180 KB Output is correct
14 Correct 53 ms 6080 KB Output is correct
15 Correct 46 ms 4040 KB Output is correct
16 Correct 57 ms 6644 KB Output is correct
17 Correct 67 ms 7276 KB Output is correct
18 Correct 73 ms 7052 KB Output is correct
19 Correct 77 ms 7376 KB Output is correct
20 Correct 60 ms 6792 KB Output is correct
21 Correct 70 ms 7064 KB Output is correct

Subtask #3
0 / 9.0

# Verdict Execution time Memory Grader output
1 Incorrect 0 ms 440 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #4
0 / 32.0

# Verdict Execution time Memory Grader output
1 Incorrect 0 ms 348 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #5
0 / 37.0

# Verdict Execution time Memory Grader output
1 Incorrect 0 ms 348 KB Output isn't correct
2 Halted 0 ms 0 KB -