Submission #496871

#	Time	Username	Problem	Language	Result	Execution time	Memory
496871		vinnipuh01	Coin Collecting (JOI19_ho_t4)	C++17	0 / 100	1 ms	276 KiB

joi2019_ho_t4

#include <iostream>
#include <bits/stdc++.h>
#include <cmath>
#include <algorithm>
#include <vector>
#include <deque>
#include <set>
#include <stack>
#include <string>
#include <map>
#include <queue>

using namespace std;

const long long oo = 1000000000000000000;

long long int  sum, ans = 0, mx = 0, mn = 1000000000, num, pos;


/*
    ViHHiPuh

   (( `'-""``""-'` ))
     )-__-_.._-__-(
   / --- (o _ o) --- \
   \ .-* ( .0. ) *-. /
   _'-. ,_ '=' _, .-'_
  / `;#'#'# - #'#'#;` \
 \_)) -----'#'----- ((_/
      # --------- #
  '# ------- ------ #'
  /..-'# ------- #'-.\
  _\...-\'# -- #'/-.../_
  ((____)- '#' -(____))


    cout << fixed << setprecision(6) << x;

    ios_base::sync_with_stdio(0);
    cin.tie(0); cout.tie(0);

    freopen ( "sum.in", "r", stdin )
*/

bool bl[ 1000001 ];
set <pair<int, int> > st;

int d( int x, int y, int xx, int yy ) {
	return abs( x - xx ) + abs( y - yy );
}

int main () {
	int n;
	cin >> n;
	pair<int, int> a[ n + n + 1 ];
	for ( int i = 1; i <= n; i ++ ) {
		for ( int j = 1; j <= 2; j ++ ) {
			st.insert( { i, j } );
		}
	}
	int y, x;
	for ( int i = 1; i <= n + n; i ++ )
		cin >> a[ i ].first >> a[ i ].second;
	sort( a + 1, a + n + n + 1 );
	for ( int i = 1; i <= n + n; i ++ ) {
		if ( a[ i ].second <= 1 ) {
			y = 1;
			if ( a[ i ].first >= 1 && a[ i ].first <= n )
				x = a[ i ].first;
			else {
				if ( a[ i ].first < 1 )
					x = 1;
				else
					x = n;
			}
		}
		else {
			y = 2;
			if ( a[ i ].first >= 1 && a[ i ].first <= n )
				x = a[ i ].first;
			else {
				if ( a[ i ].first < 1 )
					x = 1;
				else
					x = n;
			}
		}
		auto it = st.lower_bound( { x, y } );
		if ( it != st.end() && it->first == x && it->second == y ) {
			ans += d( x, y, a[ i ].first, a[ i ].second );
			st.erase( it );
			bl[ i ] = 1;
		}
	}
	for ( int i = 1; i <= n + n; i ++ ) {
		if ( bl[ i ] )
			continue;
		if ( a[ i ].second <= 1 ) {
			y = 1;
			if ( a[ i ].first >= 1 && a[ i ].first <= n )
				x = a[ i ].first;
			else {
				if ( a[ i ].first < 1 )
					x = 1;
				else
					x = n;
			}
		}
		else {
			y = 2;
			if ( a[ i ].first >= 1 && a[ i ].first <= n )
				x = a[ i ].first;
			else {
				if ( a[ i ].first < 1 )
					x = 1;
				else
					x = n;
			}
		}
		auto it = st.lower_bound( { x, y } );
		auto itt = st.upper_bound( { x, y } );
		if ( itt != st.begin() )
			itt = --itt;
		if ( it != st.end() && d( a[ i ].first, a[ i ].second, it->first, it->second ) < d( a[ i ].first, a[ i ].second, itt->first, itt->second ) ) {
			st.erase( it );
			ans += d( a[ i ].first, a[ i ].second, it->first, it->second );
		}
		else {
			st.erase( itt );
			ans += d( a[ i ].first, a[ i ].second, itt->first, itt->second );
		}
	}
	cout << ans;
}

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