Submission #391436

#	Time	Username	Problem	Language	Result	Execution time	Memory
391436		timmyfeng	Coin Collecting (JOI19_ho_t4)	C++17	100 / 100	62 ms	4924 KiB

joi2019_ho_t4

#include <bits/stdc++.h>
using namespace std;

const int N = 100000;

int coins[N][2], ext[N];

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

    int n;
    cin >> n;

    long long ans = 0;
    for (int i = 0; i < 2 * n; ++i) {
        int x, y;
        cin >> x >> y;

        if (x < 1) {
            ans += 1 - x;
            x = 1;
        } else if (x > n) {
            ans += x - n;
            x = n;
        }

        if (y < 1) {
            ans += 1 - y;
            y = 1;
        } else if (y > 2) {
            ans += y - 2;
            y = 2;
        }

        ++coins[x - 1][y - 1];
    }

    for (int i = 0; i < n; ++i) {
        for (int j = 0; j < 2; ++j) {
            ext[j] += coins[i][j] - 1;
        }

        for (int j = 0; j < 2; ++j) {
            if (ext[j] > 0 && ext[1 - j] < 0) {
                int delta = min(ext[j], -ext[1 - j]);
                ans += delta;
                ext[j] -= delta;
                ext[1 - j] += delta;
            }
        }

        for (int j = 0; j < 2; ++j) {
            ans += abs(ext[j]);
        }
    }

    cout << ans << "\n";
}

• Subtask 1: 8 / 8
• Subtask 2: 29 / 29
• Subtask 3: 63 / 63