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Submission #1055126

# Submission time Handle Problem Language Result Execution time Memory
1055126 2024-08-12T14:42:47 Z Harold Palembang Bridges (APIO15_bridge) C++14
78 / 100
 96 ms 8040 KB 
// TST
#include <bits/stdc++.h>

using namespace std;

typedef long long ll;

const int MAXN = 1e5+10;

vector<pair<ll, ll>> points;
ll pref[MAXN];

priority_queue<ll> pqLeft;
priority_queue<ll, vector<ll>, greater<ll>> pqRight;
ll sumLeft = 0, sumRight = 0;

void ins(ll x) {
    if (pqLeft.empty() || pqLeft.top() >= x) {
        pqLeft.push(x);
        sumLeft += x;
    } else {
        pqRight.push(x);
        sumRight += x;
    }

    if (pqRight.size() > pqLeft.size()) {
        ll t = pqRight.top();
        pqRight.pop();
        sumRight -= t;
        pqLeft.push(t);
        sumLeft += t;
    } else if (pqLeft.size() > pqRight.size() + 1) {
        ll t = pqLeft.top();
        pqLeft.pop();
        sumLeft -= t;
        pqRight.push(t);
        sumRight += t;
    }
}

ll getSumOfDistances() {
    return sumRight - sumLeft;
}

void clearPq() {
    while(pqLeft.size() > 0) {pqLeft.pop();}
    while(pqRight.size() > 0) {pqRight.pop();}

    sumLeft = sumRight = 0;
}

int main() {
    int k, n;

    cin >> k >> n;
    ll sumOfSame = 0;

    for (int i = 0; i < n; i++) {
        char p, q;
        ll s, t;
        cin >> p >> s >> q >> t;
        if(p == q) sumOfSame += abs(s - t);
        else points.push_back({s, t});
    }

    sort(points.begin(), points.end(), [](pair<ll, ll> a, pair<ll, ll> b) {
            return a.first + a.second < b.first + b.second;
        });

    int a = points.size();
    for (int i = 0; i < a; i++) {
        auto p = points[i];
        ll s = p.first;
        ll t = p.second;

        ins(s);
        ins(t);
        pref[i] = getSumOfDistances();
    }

    if (k == 1) {
        ll ats;
        if (a == 0) {
            ats = sumOfSame;
        } else {
            ll ats = sumOfSame + pref[a-1] + a;
        }
        cout << ats << endl;
        return 0;
    }

    ll ats = a > 0 ? pref[a-1] : 0;
    clearPq();
    for (int i = a-1; i > 0; i--) {
        auto p = points[i];
        ll s = p.first;
        ll t = p.second;

        ins(s);
        ins(t);
        ll dabAts = getSumOfDistances() + pref[i-1];
        ats = min(dabAts, ats);
    }

    ats += a + sumOfSame;
    cout << ats << endl;

    return 0;
}

Compilation message

bridge.cpp: In function 'int main()':
bridge.cpp:86:16: warning: unused variable 'ats' [-Wunused-variable]
   86 |             ll ats = sumOfSame + pref[a-1] + a;
      |                ^~~

Subtask #1
0 / 8.0

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

Subtask #2
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 Incorrect 0 ms 348 KB Output isn't correct
4 Halted 0 ms 0 KB -

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 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 1 ms 344 KB Output is correct
8 Correct 1 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 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 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 0 ms 348 KB Output is correct
9 Correct 0 ms 600 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
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 0 ms 348 KB Output is correct
17 Correct 0 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 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

Subtask #5
37.0 / 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 0 ms 348 KB Output is correct
4 Correct 0 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 0 ms 372 KB Output is correct
8 Correct 1 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 344 KB Output is correct
13 Correct 1 ms 348 KB Output is correct
14 Correct 1 ms 348 KB Output is correct
15 Correct 2 ms 348 KB Output is correct
16 Correct 1 ms 348 KB Output is correct
17 Correct 1 ms 348 KB Output is correct
18 Correct 0 ms 348 KB Output is correct
19 Correct 1 ms 348 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 35 ms 5476 KB Output is correct
26 Correct 59 ms 6772 KB Output is correct
27 Correct 85 ms 7424 KB Output is correct
28 Correct 96 ms 8040 KB Output is correct
29 Correct 84 ms 7360 KB Output is correct
30 Correct 68 ms 4172 KB Output is correct
31 Correct 49 ms 6920 KB Output is correct
32 Correct 71 ms 7996 KB Output is correct
33 Correct 68 ms 8028 KB Output is correct
34 Correct 75 ms 7868 KB Output is correct
35 Correct 54 ms 7368 KB Output is correct
36 Correct 70 ms 7624 KB Output is correct
37 Correct 31 ms 6348 KB Output is correct