Submission #37763930

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Source Code Expand

//#include "bits/stdc++.h"

#define _USE_MATH_DEFINES
#include <cstdio>
#include <cstring>
#include <cmath>
#include <cstdlib>
#include <deque>
#include <algorithm>
#include <functional>
#include <iostream>
#include <list>
#include <map>
#include <array>
#include <unordered_map>
#include <unordered_set>
#include <numeric>
#include <queue>
#include <set>
#include <sstream>
#include <stack>
#include <string>
#include <utility>
#include <vector>
#include <iterator>
#include <iomanip>
#include <complex>
#include <fstream>
#include <assert.h>

using namespace std;

#define rep(i,a,b) for(int i=(a), i##_len=(b);i<i##_len;i++)
#define rrep(i,a,b) for(int i=(b)-1;i>=(a);i--)
#define all(c) begin(c),end(c)

#define int ll
#define SZ(x) ((int)(x).size())
#define pb push_back
#define mp make_pair

typedef unsigned long long ull;
typedef long long ll;
typedef pair<int, int> pii;
typedef pair<ll, ll> pll;
typedef pair<ll, int> pli;
typedef pair<int, double> pid;
typedef pair<double, int> pdi;
typedef pair<double, double> pdd;
typedef vector< vector<int> > mat;

template<class T> bool chmax(T& a, const T& b) { if (a < b) { a = b; return true; } return false; }
template<class T> bool chmin(T& a, const T& b) { if (b < a) { a = b; return true; } return false; }

const int INF = sizeof(int) == sizeof(long long) ? 0x3f3f3f3f3f3f3f3fLL : 0x3f3f3f3f;
//const int MOD = 998244353;// (int)1e9 + 7;
const int MOD = (int)1e9 + 7;

const double EPS = 1e-9;

signed main()
{
	cin.tie(0);
	ios::sync_with_stdio(false);

	int N;
	cin >> N;

	vector<vector<int>> A(4, vector<int>(N));
	rep(i, 0, 4)rep(j, 0, N)cin >> A[i][j];

	rep(i, 0, 4)sort(all(A[i]));

	int ans = INF;
	rep(i, 0, 4)rep(j, 0, N)
	{
		int minh = A[i][j];
		int maxh = -1;
		int cnt = 0;
		rep(k, 0, 4)
		{
			if (i == k)continue;
			auto itr = lower_bound(all(A[k]), minh);
			if (itr == A[k].end())continue;
			cnt++;
			chmax(maxh, *itr);
		}
		if (cnt == 3)chmin(ans, maxh - minh);
	}

	cout << ans << endl;

	return 0;
}

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