oj.uz

Submission #922206

# Submission time Handle Problem Language Result Execution time Memory
922206 2024-02-05T08:37:53 Z asdasdqwer Palembang Bridges (APIO15_bridge) C++14
22 / 100
 92 ms 7312 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,int)> insert=[&](int num1, int num2) {
        m1.insert(num1);
        m1.insert(num2);
        s1 += num1;
        s1 += num2;
        int num = *m1.rbegin();
        s1 -= num;
        s2 += num;
        m1.erase(m1.find(num));
        m2.insert(num);
    };

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

    // 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];
    //     int tmp=0;
    //     for (int y:al) {
    //         tmp += abs(y-med);
    //     }
    //     cst1.push_back(tmp);
    // }

    reverse(dif.begin(),dif.end());
    vector<int> cst2;
    m1.clear();m2.clear();
    s1=s2=0;

    for (auto x:dif) {
        insert(x[0], x[1]);
        assert(m1.size() == m2.size());
        cst2.push_back(s2 - s1);
    }

    // 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];
    //     int tmp=0;
    //     for (int y:al) {
    //         tmp += abs(y-med);
    //     }
    //     cst2.push_back(tmp);
    // }

    reverse(cst2.begin(),cst2.end());
    // reverse(tmp2.begin(), tmp2.end());
    int res = 1e18;

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

    res += dif.size();

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

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 1 ms 440 KB Output is correct
4 Correct 1 ms 444 KB Output is correct
5 Correct 1 ms 348 KB Output is correct
6 Correct 1 ms 428 KB Output is correct
7 Correct 2 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 348 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 488 KB Output is correct
8 Correct 1 ms 488 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
12 Correct 37 ms 5676 KB Output is correct
13 Correct 82 ms 7180 KB Output is correct
14 Correct 54 ms 6024 KB Output is correct
15 Correct 48 ms 4156 KB Output is correct
16 Correct 57 ms 6516 KB Output is correct
17 Correct 75 ms 7312 KB Output is correct
18 Correct 72 ms 6880 KB Output is correct
19 Correct 79 ms 7180 KB Output is correct
20 Correct 64 ms 6852 KB Output is correct
21 Correct 92 ms 7060 KB Output is correct

Subtask #3
0 / 9.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 348 KB Output is correct
2 Correct 0 ms 436 KB Output is correct
3 Correct 1 ms 348 KB Output is correct
4 Incorrect 1 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 348 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 436 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 344 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 432 KB Output is correct
4 Incorrect 1 ms 348 KB Output isn't correct
5 Halted 0 ms 0 KB -