Submission #532991

#	Time	Username	Problem	Language	Result	Execution time	Memory
532991		amunduzbaev	Coin Collecting (JOI19_ho_t4)	C++17	0 / 100	1 ms	316 KiB

joi2019_ho_t4

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

#define ar array
#define int long long

signed main(){
	ios::sync_with_stdio(0); cin.tie(0);
	
	int n; cin>>n; n <<= 1;
	vector<ar<int, 2>> a(n), b;
	int res = 0;
	for(int i=0;i<n;i++){
		cin>>a[i][0]>>a[i][1];
		if(a[i][1] > 2) res += (a[i][1] - 2), a[i][1] = 2;
		if(a[i][1] < 1) res += (1 - a[i][1]), a[i][1] = 1;
		if(a[i][0] < 1) res += (1 - a[i][0]), a[i][0] = 1;
		if(a[i][0] > n/2) res += (a[i][0] - n/2), a[i][0] = n/2;
		//~ cout<<a[i][0]<<" "<<a[i][1]<<"\n";
	}
	
	vector<ar<int, 2>> used(n / 2);
	for(int i=0;i<n;i++){
		if(used[a[i][0] - 1][a[i][1] - 1]){
			b.push_back(a[i]);
		} else {
			used[a[i][0] - 1][a[i][1] - 1] = 1;
		}
	}
	a.clear();
	swap(a, b);
	for(int i=0;i<n/2;i++){
		for(int j=0;j<2;j++){
			if(used[i][j]) continue;
			b.push_back({i + 1, j + 1});
		}
	}
	//~ cout<<"here"<<endl;
	sort(a.begin(), a.end());
	sort(b.begin(), b.end());
	assert(a.size() == b.size());
	
	n = (int)a.size();
	deque<int> tmp[2];
	for(int i=0;i<n;i++){
		res += abs(a[i][0] - b[i][0]);
		if(a[i][1] != b[i][1]){
			tmp[a[i][1] - 1].push_back(i);
			//~ cout<<a[i][0]<<" "<<b[i][0]<<" "<<a[i][1]<<"\n";
		} else {
			//~ cout<<a[i][0]<<" "<<a[i][1]<<" : "<<b[i][0]<<" "<<b[i][1]<<"\n";
		}
	}
	
	while(!tmp[0].empty() && !tmp[1].empty()){
		int i = tmp[0].front(), j = tmp[1].front();
		if(i > j) swap(i, j);
		//~ cout<<a[i][0]<<" "<<b[i][0]<<" "<<a[i][1]<<"\n";
		//~ cout<<a[j][0]<<" "<<b[j][0]<<" "<<a[j][1]<<"\n\n";
		if(abs(a[i][0] - b[j][0]) + abs(a[j][0] - b[i][0]) == abs(a[i][0] - b[i][0]) + abs(a[j][0] - b[j][0])){
			tmp[0].pop_front(), tmp[1].pop_front();
		} else {
			res++;
			if(tmp[0].front() == i) tmp[0].pop_front();
			else tmp[1].pop_front();
		}
	}
	
	//~ for(auto i : tmp[0]){
		//~ cout<<a[i][0]<<" "<<a[i][1]<<" : "<<b[i][0]<<" "<<b[i][1]<<"\n";
	//~ }
	
	//~ for(auto i : tmp[1]){
		//~ cout<<a[i][0]<<" "<<a[i][1]<<" : "<<b[i][0]<<" "<<b[i][1]<<"\n";
	//~ }
	
	res += (int)tmp[0].size() + (int)tmp[1].size();
	cout<<res<<"\n";
}

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