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Submission #883824

# Submission time Handle Problem Language Result Execution time Memory
883824 2023-12-06T07:20:07 Z MisterReaper Palembang Bridges (APIO15_bridge) C++17
100 / 100
 218 ms 13732 KB 
#include <bits/stdc++.h>
using namespace std;
using i64 = long long;

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(), [&](pair <int, int> a, pair <int, int> b) -> bool {
        return a.first + a.second < b.first + b.second;
    });

    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 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 344 KB Output is correct
5 Correct 1 ms 344 KB Output is correct
6 Correct 1 ms 344 KB Output is correct
7 Correct 1 ms 484 KB Output is correct
8 Correct 1 ms 348 KB Output is correct
9 Correct 1 ms 600 KB Output is correct
10 Correct 1 ms 344 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 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 90 ms 11176 KB Output is correct
13 Correct 102 ms 11164 KB Output is correct
14 Correct 95 ms 10188 KB Output is correct
15 Correct 63 ms 6736 KB Output is correct
16 Correct 77 ms 11304 KB Output is correct
17 Correct 94 ms 11216 KB Output is correct
18 Correct 66 ms 11368 KB Output is correct
19 Correct 105 ms 11236 KB Output is correct
20 Correct 97 ms 11212 KB Output is correct
21 Correct 92 ms 11204 KB Output is correct

Subtask #3
9.0 / 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 Correct 0 ms 348 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 0 ms 348 KB Output is correct
7 Correct 0 ms 424 KB Output is correct
8 Correct 0 ms 348 KB Output is correct
9 Correct 0 ms 348 KB Output is correct
10 Correct 0 ms 348 KB Output is correct
11 Correct 0 ms 348 KB Output is correct
12 Correct 0 ms 348 KB Output is correct

Subtask #4
32.0 / 32.0

# 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 0 ms 344 KB Output is correct
4 Correct 1 ms 348 KB Output is correct
5 Correct 1 ms 344 KB Output is correct
6 Correct 1 ms 348 KB Output is correct
7 Correct 1 ms 348 KB Output is correct
8 Correct 0 ms 348 KB Output is correct
9 Correct 0 ms 348 KB Output is correct
10 Correct 0 ms 348 KB Output is correct
11 Correct 0 ms 460 KB Output is correct
12 Correct 1 ms 348 KB Output is correct
13 Correct 1 ms 348 KB Output is correct
14 Correct 1 ms 348 KB Output is correct
15 Correct 1 ms 348 KB Output is correct
16 Correct 1 ms 600 KB Output is correct
17 Correct 1 ms 348 KB Output is correct
18 Correct 1 ms 348 KB Output is correct
19 Correct 1 ms 348 KB Output is correct
20 Correct 1 ms 460 KB Output is correct
21 Correct 1 ms 348 KB Output is correct
22 Correct 1 ms 348 KB Output is correct
23 Correct 1 ms 492 KB Output is correct
24 Correct 1 ms 348 KB Output is correct

Subtask #5
37.0 / 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 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 0 ms 348 KB Output is correct
7 Correct 0 ms 348 KB Output is correct
8 Correct 1 ms 344 KB Output is correct
9 Correct 0 ms 348 KB Output is correct
10 Correct 0 ms 348 KB Output is correct
11 Correct 0 ms 348 KB Output is correct
12 Correct 0 ms 344 KB Output is correct
13 Correct 1 ms 344 KB Output is correct
14 Correct 1 ms 348 KB Output is correct
15 Correct 1 ms 344 KB Output is correct
16 Correct 1 ms 348 KB Output is correct
17 Correct 1 ms 348 KB Output is correct
18 Correct 1 ms 348 KB Output is correct
19 Correct 2 ms 344 KB Output is correct
20 Correct 1 ms 348 KB Output is correct
21 Correct 1 ms 348 KB Output is correct
22 Correct 1 ms 348 KB Output is correct
23 Correct 1 ms 348 KB Output is correct
24 Correct 1 ms 348 KB Output is correct
25 Correct 150 ms 12100 KB Output is correct
26 Correct 196 ms 12224 KB Output is correct
27 Correct 218 ms 13148 KB Output is correct
28 Correct 190 ms 13580 KB Output is correct
29 Correct 190 ms 13732 KB Output is correct
30 Correct 86 ms 7588 KB Output is correct
31 Correct 132 ms 13052 KB Output is correct
32 Correct 139 ms 13696 KB Output is correct
33 Correct 119 ms 13356 KB Output is correct
34 Correct 151 ms 13544 KB Output is correct
35 Correct 171 ms 13296 KB Output is correct
36 Correct 139 ms 13360 KB Output is correct
37 Correct 146 ms 12168 KB Output is correct