oj.uz

답안 #922179

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
922179 2024-02-05T08:11:47 Z asdasdqwer Palembang Bridges (APIO15_bridge) C++14
22 / 100
 80 ms 7396 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((((int)m1.size() * med) - s1) + (s2 - (((int)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((((int)m1.size() * med) - s1) + (s2 - (((int)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

# 결과 실행 시간 메모리 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 452 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 444 KB Output is correct

Subtask #2
14.0 / 14.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 436 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 1 ms 344 KB Output is correct
4 Correct 1 ms 348 KB Output is correct
5 Correct 1 ms 448 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 448 KB Output is correct
10 Correct 1 ms 348 KB Output is correct
11 Correct 1 ms 348 KB Output is correct
12 Correct 38 ms 5828 KB Output is correct
13 Correct 80 ms 7364 KB Output is correct
14 Correct 53 ms 6080 KB Output is correct
15 Correct 47 ms 4016 KB Output is correct
16 Correct 58 ms 6680 KB Output is correct
17 Correct 71 ms 7236 KB Output is correct
18 Correct 69 ms 6940 KB Output is correct
19 Correct 78 ms 7396 KB Output is correct
20 Correct 61 ms 6748 KB Output is correct
21 Correct 72 ms 7104 KB Output is correct

Subtask #3
0 / 9.0

# 결과 실행 시간 메모리 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 Incorrect 0 ms 348 KB Output isn't correct
5 Halted 0 ms 0 KB -

Subtask #4
0 / 32.0

# 결과 실행 시간 메모리 Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 440 KB Output is correct
4 Incorrect 0 ms 348 KB Output isn't correct
5 Halted 0 ms 0 KB -

Subtask #5
0 / 37.0

# 결과 실행 시간 메모리 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 432 KB Output isn't correct
5 Halted 0 ms 0 KB -