Submission #497191

#	Time	Username	Problem	Language	Result	Execution time	Memory
497191		ergagan	Coin Collecting (JOI19_ho_t4)	C++17	100 / 100	63 ms	5072 KiB

joi2019_ho_t4

//я так много думал, что опять попал
#include <bits/stdc++.h>
#define all(x) x.begin(),x.end()
#define pb push_back
#define ppb pop_back
#define pf push_front
#define ppf pop_front
#define f first
#define s second
#define left(v) v + v
#define right(v) v + v + 1
#define ub upper_bound
#define lb lower_bound
#define pll pair<ll,ll>

using namespace std;
typedef long long ll;

//17 SEVENTEEN
const long double Pi = acos(-1.0);
const ll dx[] = {0,0,1,-1};
const ll dy[] = {1,-1,0,0};
const ll N = (ll) 1e6 + 17;
const ll M = (ll) 5e3 + 69;
const ll inf = (ll) 1e14 + 3;
const ll mod = (ll) 1e9 + 7;
ll sq(ll x) { return x * x; }

ll zxc = 1, x, y, a[5][N], sum[5];

void solve() {
    ll n, ans = 0;
    cin >> n;
    for(ll i = 1; i <= 2 * n; i++) {
        cin >> y >> x;
        if(1 <= x && x <= 2 && 1 <= y && y <= n) a[x][y]++;
        else if(x < 1 && y < 1) {
            a[1][1]++;
            ans += abs(x - 1), ans += abs(y - 1);
        }
        else if(x < 1 && y > n) {
            a[1][n]++;
            ans += abs(x - 1), ans += abs(y - n);
        }
        else if(y < 1 && x > 2) {
            a[2][1]++;
            ans += abs(x - 2), ans += abs(y - 1);
        }
        else if(x > 2 && y > n) {
            a[2][n]++;
            ans += abs(x - 2), ans += abs(y - n);
        }
        else if(1 <= x && x <= 2 && y < 1)
            a[x][1]++, ans += abs(y - 1);

        else if(1 <= x && x <= 2 && y > n)
            a[x][n]++, ans += abs(y - n);

        else if(1 <= y && y <= n && x < 1)
            a[1][y]++, ans += abs(x - 1);

        else if(1 <= y && y <= n && x > 2)
            a[2][y]++, ans += abs(x - 2);
    }

//    cout << ans << "\n";
//
//    for(ll i = 1; i <= 2; i++) {
//        for(ll j = 1; j <= n; j++) {
//            cout << a[i][j] << " ";
//        }
//        cout << "\n";
//    }

    for(ll i = 1; i <= n; i++) {
        sum[1] += a[1][i] - 1;
        sum[2] += a[2][i] - 1;

        ll x = min(abs(sum[1]), abs(sum[2]));

        if(sum[1] > 0 && sum[2] < 0)
            sum[1] -= x, sum[2] += x, ans += x;

        if(sum[2] > 0 && sum[1] < 0)
            sum[2] -= x, sum[1] += x, ans += x;

        ans += abs(sum[1]) + abs(sum[2]);
    }

    cout << ans;
}

int main(/*Уверенно*/) {
ios_base::sync_with_stdio(0);
    cin.tie(0);
/*
	freopen(".in", "r", stdin);
	freopen(".out", "w", stdout);
*/
//    cin >> zxc;
    while(zxc--) {
        solve();
    }
  	return 0;
}
// さよならさ いかなくちゃ

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