Submission #164186

#	Time	Username	Problem	Language	Result	Execution time	Memory
164186		dimash241	Cipele (COCI18_cipele)	C++17	90 / 90	53 ms	3028 KiB

cipele

#pragma GCC target("avx2")
#pragma GCC optimize("O3")

# include <x86intrin.h>
# include <bits/stdc++.h>

# include <ext/pb_ds/assoc_container.hpp>
# include <ext/pb_ds/tree_policy.hpp>

using namespace __gnu_pbds;
using namespace std;
 
template<typename T> using ordered_set = tree <T, null_type, less<T>, rb_tree_tag, tree_order_statistics_node_update>;

#define _USE_MATH_DEFINES_
#define ll long long
#define ld long double
#define Accepted 0
#define pb push_back
#define mp make_pair
#define sz(x) (int)(x.size())
#define every(x) x.begin(),x.end()
#define F first
#define S second
#define lb lower_bound
#define ub upper_bound
#define For(i,x,y)  for (ll i = x; i <= y; i ++) 
#define FOr(i,x,y)  for (ll i = x; i >= y; i --)
#define SpeedForce ios_base::sync_with_stdio(0), cin.tie(0), cout.tie(0)
// ROAD to...                                                                                                                                                                                                                Red

inline void Input_Output () {
	//freopen(".in", "r", stdin);
   //freopen(".out", "w", stdout);
}

const double eps = 0.000001;
const ld pi = acos(-1);
const int maxn = 1e7 + 9;
const int mod = 1e9 + 7;
const ll MOD = 1e18 + 9;
const ll INF = 1e18 + 123;
const int inf = 2e9 + 11;
const int mxn = 1e6 + 9;
const int N = 6e5 + 123;                                          
const int M = 22;
const int pri = 997;
const int Magic = 2101;

const int dx[] = {-1, 0, 1, 0};
const int dy[] = {0, -1, 0, 1};
 
int n, m;
int a[N];
int b[N];

bool check (int x) {
	for (int i = 1, j = 1; i <= n; i ++) {
		while(j <= m && abs(a[i] - b[j]) > x) j++;
		if (j > m) return 0;
		j ++;
	}

	return 1;
}


int main () {
   SpeedForce;
	cin >> n >> m;

	for (int i = 1; i <= n; i ++) {
		cin >> a[i];
	}

	for (int i = 1; i <= m; i ++) {
		cin >> b[i];
	}

	if (n > m) {
		swap(n, m);
		for (int i = 1; i <= m; i ++)
			swap(a[i], b[i]);
	}


	int l = -1, r = 1e9 + 1;

	sort(a + 1, a + n + 1);
	sort(b + 1, b + m + 1);
	while (r - l > 1) {
		int md = (l + r) >> 1;
		if (check(md)) {
			r = md;
		} else {
			l = md;
		}
	}
	cout << r << '\n';

	
   return Accepted;
}

// B...a

• Subtask 1: 9 / 9
• Subtask 2: 9 / 9
• Subtask 3: 9 / 9
• Subtask 4: 9 / 9
• Subtask 5: 9 / 9
• Subtask 6: 9 / 9
• Subtask 7: 9 / 9
• Subtask 8: 9 / 9
• Subtask 9: 9 / 9
• Subtask 10: 9 / 9