Submission #493765

#	Time	Username	Problem	Language	Result	Execution time	Memory
493765		sberens	Palembang Bridges (APIO15_bridge)	C++17	22 / 100	39 ms	5576 KiB

bridge

#include <bits/stdc++.h>

#include <ext/pb_ds/assoc_container.hpp>

using namespace __gnu_pbds;
template<typename K> using hset = gp_hash_table<K, null_type>;
template<typename K, typename V> using hmap = gp_hash_table<K, V>;


using namespace std;

#define all(x) (x).begin(), (x).end()
#define pb push_back
#define eb emplace_back
#define smax(x, y) (x = max(x, y))
#define smin(x, y) (x = min(x, y))

#define FOR(i, a, b) for (int i = (a); i < (b); ++i)
#define F0R(i, a) FOR(i,0,a)
#define ROF(i, a, b) for (int i = (b)-1; i >= (a); --i)
#define R0F(i, a) ROF(i,0,a)


using ll = long long;
using ld = long double;

template<typename T>
using vv = vector<vector<T>>;

using vi = vector<int>;
using ii = array<int, 2>;
using vii = vector<ii>;
using vvi = vv<int>;

using vll = vector<ll>;
using l2 = array<ll, 2>;
using vl2 = vector<l2>;
using vvll = vv<ll>;

template<typename T>
using minq = priority_queue<T, vector<T>, greater<T>>;
template<typename T>
using maxq = priority_queue<T>;

const ll M = 1000000007;
const ll infll = M * M;

int main() {
    ios::sync_with_stdio(0);
    cin.tie(0);
    int k, n;
    cin >> k >> n;
    ll res{};
    vii pe;
    F0R(i, n) {
        char p, q;
        int s, t;
        cin >> p >> s >> q >> t;
        if (p == q) res += abs(t - s);
        else pe.pb({s, t});
    }
    if (k == 1) {
        if (pe.empty()) {
            cout << res << '\n';
            return 0;
        }
        res += pe.size(); // distance from people crossing the bridge
        vll v;
        for (auto [s, t] : pe) {
            v.pb(s);
            v.pb(t);
        }
        sort(all(v));
        ll x = (v[v.size() / 2 - 1] + v[v.size() / 2]) / 2;
        for (auto [s, t] : pe) {
            res += abs(s - x) + abs(t - x);
        }
        cout << res << '\n';
    }
}

• Subtask 1: 8 / 8
• Subtask 2: 14 / 14
• Subtask 3: 0 / 9
• Subtask 4: 0 / 32
• Subtask 5: 0 / 37