Submission #98234

#	Time	Username	Problem	Language	Result	Execution time	Memory
98234		scanhex	Coin Collecting (JOI19_ho_t4)	C++17	0 / 100	3 ms	384 KiB

joi2019_ho_t4

#include <bits/stdc++.h>

using namespace std;
using nagai = long long;
#define sz(x) int((x).size())

const int N=200200;

int cnt[N][2];

int dist(pair<int,int>a,pair<int,int>b){
	return abs(a.first-b.first)+abs(a.second-b.second);
}

int main(){
	ios::sync_with_stdio(false);
	cin.tie(0);
	int n;
	cin>>n;
	nagai ansich=0;
	for(int i=0;i<2*n;++i){
		int x,y;
		cin>>x>>y;
		int x1=x,y1=y;
		if(x<1)x1=1;
		if(x>n)x1=n;
		if(y<1)y1=1;
		if(y>2)y1=2;
		ansich+=abs(x-x1);
		ansich+=abs(y-y1);
		++cnt[x1-1][y1-1];
	}
	int sum1=-n;
	for(int i=0;i<n;++i)sum1+=cnt[i][0];
	if(sum1<0){
		sum1*=-1;
		for(int i=0;i<n;++i)swap(cnt[i][0],cnt[i][1]);
	}
	int ptr=0;
	for(int i=0;i<n;++i){
		for(int j=0;j<cnt[i][1];++j)++ptr;
		while(cnt[i][0]&&ptr<=i&&sum1>0)--cnt[i][0],--sum1,++ptr,++ansich,++cnt[i][1];
	}
	for(int i=n-1;i>=0;--i){
		while(cnt[i][0]&&sum1>0)--cnt[i][0],++cnt[i][1],--sum1;
	}
	for(int k=0;k<2;++k){
		int ptr=0;
		for(int i=0;i<n;++i){
			for(int j=0;j<cnt[i][k];++j)ansich+=abs(ptr-i),++ptr;
		}
		assert(ptr==n);
	}
	cout<<ansich<<'\n';
	return 0;
}

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