oj.uz

Submission #883821

# Submission time Handle Problem Language Result Execution time Memory
883821 2023-12-06T07:16:40 Z MisterReaper Palembang Bridges (APIO15_bridge) C++17
22 / 100
 114 ms 12484 KB 
#include <bits/stdc++.h>
using namespace std;
using i64 = long long;
#define int i64

const i64 INF = 1E18;

char ch[2];
int x[2];

template <typename T>
ostream& operator<< (ostream &out, vector <T> vec) {
    out << "{";
    for(int i = 0; i < int(vec.size()); i++) {
        out << vec[i];
        if(i +1 < int(vec.size())) {
            out << ", ";
        }
    }

    return out << "}";
}

#define ONLINE_JUDGE

i64 suml = 0, sumr = 0;
multiset <int> low, up;

void balance() {
    while(int(low.size()) > int(up.size())) {
        int x = *low.rbegin();
        up.emplace(x);
        suml -= x;
        sumr += x;
        low.erase(low.find(x));
    }


    while(int(up.size()) > int(low.size())) {
        int x = *up.begin();
        low.emplace(x);
        suml += x;
        sumr -= x;
        up.erase(up.find(x));
    }
}

void add(int x) {
    low.emplace(x);
    suml += x;

    balance();
}

void solve() {
    int k, n;
    cin >> k >> n;

    i64 total = 0;
    vector <pair <int, int>> a;
    for(int i = 0; i < n; i++) {
        cin >> ch[0] >> x[0] >> ch[1] >> x[1];
        if(ch[0] != ch[1]) {
            a.emplace_back(x[0], x[1]);
        } else {
            total += abs(x[0] - x[1]);
        }
    }

    n = int(a.size());
    i64 ans = INF;

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

    vector <i64> pref(n +1);
    for(int i = 0; i < n; i++) {
        add(a[i].first);
        add(a[i].second);

        //cerr << a[i].first << " " << a[i].second << " :: " << sumr << " " << suml << "\n";
        pref[i +1] = sumr - suml;
    }

    ans = min(ans, pref[n]);

    if(k == 2) {
        low.clear();
        up.clear();
        suml = sumr = 0;

        for(int i = n; i >= 1; i--) {
            add(a[i -1].first);
            add(a[i -1].second);

            //cerr << a[i].first << " " << a[i].second << " :: " << sumr << " " << suml << " | " << pref[i -1] << "\n";
            ans = min(ans, pref[i -1] + sumr - suml);
        }
    }

    cout << ans + total + n;
}

signed main() {
    #ifndef ONLINE_JUDGE
        freopen("in.txt", "r", stdin);
        freopen("out.txt", "w", stdout);
    #endif

    ios_base::sync_with_stdio(false);
    cin.tie(NULL); cout.tie(NULL);

    solve();

    return 0;
}

Subtask #1
8.0 / 8.0

# 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 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 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
12 Correct 99 ms 12096 KB Output is correct
13 Correct 114 ms 11976 KB Output is correct
14 Correct 88 ms 10896 KB Output is correct
15 Correct 53 ms 7584 KB Output is correct
16 Correct 103 ms 12484 KB Output is correct
17 Correct 100 ms 11972 KB Output is correct
18 Correct 100 ms 11980 KB Output is correct
19 Correct 104 ms 11960 KB Output is correct
20 Correct 105 ms 12296 KB Output is correct
21 Correct 102 ms 11972 KB Output is correct

Subtask #3
0 / 9.0

# 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 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 348 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

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