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Submission #1094789

# Submission time Handle Problem Language Result Execution time Memory
1094789 2024-09-30T14:59:19 Z DaciejMaciej Palembang Bridges (APIO15_bridge) C++17
100 / 100
 502 ms 8764 KB 
#include <bits/stdc++.h>
// #include <ext/pb_ds/assoc_container.hpp>
// #include <ext/pb_ds/tree_policy.hpp>
// #include <ext/rope>

using namespace std;
// using namespace __gnu_pbds;

typedef long long ll;
typedef unsigned long long ull;
typedef unsigned int uint;
typedef long double ld;

template <class T>

using VV = vector<vector<T>>;

using VI = vector<int>;
using VVI = vector<vector<int>>;

using VL = vector<long long>;
using VVL = vector<vector<long long>>;

using VC = vector<char>;
using VVC = vector<vector<char>>;

using VB = vector<bool>;
using VVB = vector<vector<bool>>;

using VD = vector<double>;
using VVD = vector<vector<double>>;

using PII = pair<int, int>;
using PLL = pair<long long, long long>;
using PIL = pair<int, long long>;
using PLI = pair<long long, int>;

using VPII = vector<pair<int, int>>;
using VPLL = vector<pair<long long, long long>>;



#define LINE '\n'
#define SPACE ' '
#define PB push_back
#define FOR(i, a, b) for (int i = (a); i < (int(b)); i++)

#define ALL(x) x.begin(), x.end()

#define sz(x) ((int)x.size())




template <class T>
void mini(T &a, T b)
{
    a = min(a, b);
}





priority_queue<int> lq;
priority_queue<int, VI, greater<int>>  rq;
ll lsum, rsum;

void insert(int x)
{
    int median = (sz(lq) ? lq.top() : 1e9 + 2137);
    if(x <= median) {
        lq.push(x);
        lsum += x;
    }
    else {
        rq.push(x);
        rsum += x;
    }

    if(sz(lq) > sz(rq) + 1) {
        int tmp = lq.top();
        lq.pop();
        rq.push(tmp);
        lsum -= tmp;
        rsum += tmp;
    }
    else if(sz(lq) < sz(rq)) {
        int tmp = rq.top();
        rq.pop();
        lq.push(tmp);
        rsum -= tmp;
        lsum += tmp;
    }
}

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

    ll same = 0;

    VPII vec;
    vec.PB({0, 0});

    FOR(i, 0, n) {
        char a, b;
        int x, y;
        cin >> a >> x >> b >> y;
        if(a==b) same += abs(x-y);
        else vec.PB({x, y});
    }

    sort(ALL(vec), [](const PII &a, const PII &b) {return a.first + a.second < b.first + b.second;});
    n = sz(vec) - 1;
    lsum = rsum = 0;
    same += n; // because of bridge

    VL pref(n + 1, 0);

    FOR(i, 1, n + 1) {

        auto [x, y] = vec[i];
        insert(x);
        insert(y);
        cerr << lsum << SPACE << rsum << LINE;
        pref[i] = rsum - lsum;
    }

    ll ans = pref[n];

    if(k == 2) {
        while(sz(lq)) lq.pop();
        while(sz(rq)) rq.pop();

        lsum = rsum = 0;
        for(int i = n; i >= 1; i--) {
            auto [x, y] = vec[i];
            insert(x);
            insert(y);
            mini(ans, rsum - lsum + pref[i-1]);
        }
    }

    cout << same + ans << LINE;
}

int main()
{
    ios_base::sync_with_stdio(false);
    cin.tie(nullptr);

    int t = 1;
    // cin >> t;

    while (t--)
        solve();
}

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 344 KB Output is correct
3 Correct 5 ms 348 KB Output is correct
4 Correct 6 ms 348 KB Output is correct
5 Correct 5 ms 508 KB Output is correct
6 Correct 5 ms 348 KB Output is correct
7 Correct 5 ms 348 KB Output is correct
8 Correct 5 ms 348 KB Output is correct
9 Correct 5 ms 348 KB Output is correct
10 Correct 5 ms 348 KB Output is correct
11 Correct 5 ms 348 KB Output is correct

Subtask #2
14.0 / 14.0

# 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 4 ms 348 KB Output is correct
4 Correct 5 ms 504 KB Output is correct
5 Correct 5 ms 512 KB Output is correct
6 Correct 5 ms 508 KB Output is correct
7 Correct 5 ms 344 KB Output is correct
8 Correct 5 ms 348 KB Output is correct
9 Correct 5 ms 348 KB Output is correct
10 Correct 4 ms 504 KB Output is correct
11 Correct 5 ms 348 KB Output is correct
12 Correct 421 ms 4556 KB Output is correct
13 Correct 459 ms 8400 KB Output is correct
14 Correct 395 ms 6348 KB Output is correct
15 Correct 278 ms 5360 KB Output is correct
16 Correct 432 ms 6688 KB Output is correct
17 Correct 472 ms 8396 KB Output is correct
18 Correct 447 ms 8164 KB Output is correct
19 Correct 455 ms 8400 KB Output is correct
20 Correct 435 ms 7116 KB Output is correct
21 Correct 467 ms 7624 KB Output is correct

Subtask #3
9.0 / 9.0

# Verdict Execution time Memory Grader output
1 Correct 1 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 456 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 600 KB Output is correct
11 Correct 1 ms 348 KB Output is correct
12 Correct 1 ms 456 KB Output is correct

Subtask #4
32.0 / 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 1 ms 348 KB Output is correct
4 Correct 1 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 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 1 ms 612 KB Output is correct
13 Correct 4 ms 344 KB Output is correct
14 Correct 5 ms 348 KB Output is correct
15 Correct 5 ms 532 KB Output is correct
16 Correct 2 ms 348 KB Output is correct
17 Correct 3 ms 464 KB Output is correct
18 Correct 2 ms 348 KB Output is correct
19 Correct 5 ms 348 KB Output is correct
20 Correct 5 ms 348 KB Output is correct
21 Correct 5 ms 468 KB Output is correct
22 Correct 5 ms 348 KB Output is correct
23 Correct 5 ms 348 KB Output is correct
24 Correct 5 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 1 ms 344 KB Output is correct
4 Correct 1 ms 348 KB Output is correct
5 Correct 1 ms 348 KB Output is correct
6 Correct 0 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 1 ms 348 KB Output is correct
13 Correct 4 ms 348 KB Output is correct
14 Correct 5 ms 348 KB Output is correct
15 Correct 5 ms 496 KB Output is correct
16 Correct 2 ms 348 KB Output is correct
17 Correct 3 ms 352 KB Output is correct
18 Correct 2 ms 356 KB Output is correct
19 Correct 5 ms 360 KB Output is correct
20 Correct 5 ms 352 KB Output is correct
21 Correct 5 ms 360 KB Output is correct
22 Correct 5 ms 512 KB Output is correct
23 Correct 4 ms 360 KB Output is correct
24 Correct 5 ms 360 KB Output is correct
25 Correct 444 ms 4572 KB Output is correct
26 Correct 456 ms 5984 KB Output is correct
27 Correct 477 ms 7360 KB Output is correct
28 Correct 502 ms 8764 KB Output is correct
29 Correct 474 ms 8396 KB Output is correct
30 Correct 252 ms 4716 KB Output is correct
31 Correct 457 ms 6332 KB Output is correct
32 Correct 456 ms 8432 KB Output is correct
33 Correct 471 ms 7488 KB Output is correct
34 Correct 471 ms 8400 KB Output is correct
35 Correct 461 ms 7116 KB Output is correct
36 Correct 472 ms 7656 KB Output is correct
37 Correct 425 ms 4236 KB Output is correct