Submission #867982

#	Time	Username	Problem	Language	Result	Execution time	Memory
867982		Nuraly_Serikbay	Coin Collecting (JOI19_ho_t4)	C++17	8 / 100	20 ms	4700 KiB

joi2019_ho_t4

//çalışan kazanır//
 
#include "bits/stdc++.h"
 
using namespace std;
 
#define int long long
#define pb push_back
#define S second
#define F first
#define all(x) x.begin(),x.end()
#define YOSIK() ios_base::sync_with_stdio(0),cin.tie(0)
int gcd (int a, int b) {if (b == 0){return a;}else {return gcd (b, a % b);}}
 
const int N = 4e5 + 15;
const int INF = 1e18;
const int MOD = 1e9 + 7;
const int MODD = 1070234587ll;
const double eps = 0.0001;
const int p = 87;

int n, x[N], y[N];
int cnt[N][3], dp[2001];


void solution () {
	cin >> n;
	for (int i = 1; i <= n * 2; ++ i) cin >> x[i] >> y[i];
	int res = 0;
	for (int i = 1; i <= n * 2; ++ i) {
		if (1 <= x[i] && x[i] <= n) {
			if (1 <= y[i] && y[i] <= 2) cnt[x[i]][y[i]] ++;
			if (y[i] < 1) cnt[x[i]][1] ++, res += (1 - y[i]), y[i] = 1;
			if (2 < y[i]) cnt[x[i]][2] ++, res += (y[i] - 2), y[i] = 2;
		}
		if (x[i] < 1) {
			res += 1 - x[i];
			if (1 <= y[i] && y[i] <= 2) cnt[1][y[i]] ++;
			if (y[i] < 1) cnt[1][1] ++, res += (1 - y[i]), y[i] = 1;
			if (2 < y[i]) cnt[1][2] ++, res += (y[i] - 2), y[i] = 2;
			x[i] = 1;
		}
		if (n < x[i]) {
			res += x[i] - n;
			if (1 <= y[i] && y[i] <= 2) cnt[n][y[i]] ++;
			if (y[i] < 1) cnt[n][1] ++, res += (1 - y[i]), y[i] = 1;
			if (2 < y[i]) cnt[n][2] ++, res += (y[i] - 2), y[i] = 2;
			x[i] = n;
		}
	//	cout << "cors -> " << x[i] << ' ' << y[i] << '\n';
	}
//	cout << res << '\n';
	n *= 2;
	vector <pair <int, int>> ord;
	for (int i = 1; i <= n; ++ i) ord.pb ({x[i], y[i]});
	sort (all (ord));
	int mn = INF;
	for (int mask = 0; mask < (1 << n); ++ mask) {
		if (__builtin_popcount (mask) != n / 2) continue;
		int t = 0, tt = 0, cur = 0;
		
		for (int i = 0; i < n; ++ i) {
			if (((mask >> i) & 1)) {
				cur += abs(ord[i].F - (++t));
				if (ord[i].S != 1) cur ++;
			} else {
				cur += abs(ord[i].F - (++tt));
				if (ord[i].S == 1) cur ++;
			}
		}
		mn = min (mn, cur);	
	}
	cout << res + mn;
	return;	
}
 
signed main() {
//	YOSIK();
//	srand (time(0));
//	freopen ("E.in", "r", stdin);
//	freopen ("E.out", "w", stdout);
	int TT = 1;// cin >> TT;
	for (int i = 1; i <= TT; ++ i) {
//		cout << "Case " << i << ": ";
		solution ();
		
  	}
 
	return 0;
}

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