Submission #1063978

#	Time	Username	Problem	Language	Result	Execution time	Memory
1063978		TheQuantiX	Wiring (IOI17_wiring)	C++17	0 / 100	1 ms	348 KiB

wiring

#include <bits/stdc++.h>

using namespace std;
using ll = long long;

constexpr ll INF = 1000000000000000000LL;

ll n, m, q, k, x, y, a, c;

long long min_total_length(std::vector<int> r, std::vector<int> b) {
    n = r.size();
    m = b.size();
    set< pair<ll, pair<ll, ll> > > two, one;
    vector<bool> used1(n), used2(m);
    for (int i = 0; i < n; i++) {
        if (r[i] <= b[b.size() - 1]) {
            ll x = lower_bound(b.begin(), b.end(), r[i]) - b.begin();
            two.insert({abs(r[i] - b[x]), {i, x}});
        }
        if (r[i] >= b[0]) {
            ll x = (--upper_bound(b.begin(), b.end(), r[i])) - b.begin();
            two.insert({abs(r[i] - b[x]), {i, x}});
        }
    }
    // for (auto i : two) {
    //     cout << i.first << ' ' << i.second.first << ' ' << i.second.second << '\n';
    // }
    // cout << '\n';
    ll ans = 0;
    while (two.size() > 0 || one.size() > 0) {
        pair<ll, ll> p1 = {-1, -1}, p2 = {-1, -1};
        if (two.size() > 0) {
            while (two.size() > 0 && p2.first == -1) {
                p2 = (*two.begin()).second;
                two.erase({abs(r[p2.first] - b[p2.second]), p2});
                if (used1[p2.first] && used2[p2.second]) {
                    p2 = {-1, -1};
                    continue;
                }
                if (used1[p2.first] || used2[p2.second]) {
                    one.insert({abs(r[p2.first] - b[p2.second]), p2});
                    p2 = {-1, -1};
                    continue;
                }
                break;
            }
        }
        if (one.size() > 0) {
            while (one.size() > 0 && p1.first == -1) {
                p1 = (*one.begin()).second;
                one.erase({abs(r[p1.first] - b[p1.second]), p1});
                if (used1[p1.first] && used2[p1.second]) {
                    p1 = {-1, -1};
                    continue;
                }
                break;
            }
        }
        if (p1.first == -1 && p2.first == -1) {
            break;
        }
        // cout << p1.first << ' ' << p1.second << '\n';
        // cout << p2.first << ' ' << p2.second << '\n';
        // for (auto i : used1) {
        //     cout << i << ' ';
        // }
        // cout << '\n';
        // for (auto i : used2) {
        //     cout << i << ' ';
        // }
        // cout << '\n';
        // cout << '\n';
        ll a1 = (p1.first == -1 ? INF : abs(r[p1.first] - b[p1.second]));
        a1 *= 2;
        ll a2 = (p2.first == -1 ? INF : abs(r[p2.first] - b[p2.second]));
        if (a2 < a1) {
            ans += a2;
            used1[p2.first] = 1;
            used2[p2.second] = 1;
        }
        else {
            ans += a1 / 2;
            used1[p1.first] = 1;
            used2[p1.second] = 1;
        }
    }
    return ans;
}

• Subtask 1: 0 / 7
• Subtask 2: 0 / 13
• Subtask 3: 0 / 10
• Subtask 4: 0 / 25
• Subtask 5: 0 / 45