Submission #720989

#	Time	Username	Problem	Language	Result	Execution time	Memory
720989		Pring	Coin Collecting (JOI19_ho_t4)	C++14	0 / 100	1 ms	340 KiB

joi2019_ho_t4

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

#define int long long
typedef pair<int, int> pii;

const int MXN = 200005;
int N, n, ans, c[MXN][2];
pii a[MXN];

int DIS(pii &a, pii &b) {
    return abs(a.first - b.first) + abs(a.second - b.second);
}

void PUT(int id) {
    pii tr;
    tr.second = (a[id].second >= 2 ? 2 : 1);
    if (1 <= a[id].first && a[id].first <= n) tr.first = a[id].first;
    else tr.first = (a[id].first < 1 ? 1 : n);
    c[tr.first][tr.second - 1]++;
    ans += DIS(tr, a[id]);
}

void SOLVE() {
    int up = 0, down = 0;
    for (int i = 1; i <= n; i++) {
        up += c[i][1];
        down += c[i][0];
    }
    ans += abs(n - up);
    int left = 0, right = N;
    for (int i = 1; i < n; i++) {
        left += (c[i][0] + c[i][1]);
        right -= (c[i][0] + c[i][1]);
        ans += abs(i * 2 - left);
    }
}

int32_t main() {
    ios_base::sync_with_stdio(false);
    cin.tie(0);
    cin >> n;
    N = n * 2;
    for (int i = 0; i < N; i++) {
        cin >> a[i].first >> a[i].second;
        PUT(i);
    }
    // for (int j = 1; j >= 0; j--) {
        // for (int i = 1; i <= n; i++) {
        //     cout << c[i][j] << ' ';
        // }
        // cout << endl;
    // }
    SOLVE();
    cout << ans << endl;
    return 0;
}

• Subtask 1: 0 / 8
• Subtask 2: 0 / 29
• Subtask 3: 0 / 63