제출 #1327179

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
1327179		asim	Cipele (COCI18_cipele)	C++20	18 / 90	68 ms	9812 KiB

cipele

// created : 2026/02/21 21:27:49
#include <bits/stdc++.h>
using namespace std;

#define int long long
#define pb push_back
#define all(v) v.begin(), v.end()

void solve() {
    int n, m; cin >> n >> m;
    multiset<int> st, st2;
    for(int i = 0; i < n; i++) {
        int x; cin >> x;
        st.insert(x);
    }
    for(int i = 0; i < m; i++) {
        int x; cin >> x;
        st2.insert(x);
    }
    int maxi = -4e18;
    if(n > m) {
        for(auto &x : st2) {
            auto it = st.upper_bound(x);
            if(it == st.end()) {
                it--;
                maxi = max(maxi, abs(*it - x));
                st.erase(it);
            }
            else if(it == st.begin()) {
                maxi = max(maxi, abs(*it - x));
                st.erase(it);
            }
            else {
                int b = *it;
                it--;
                int a = *it;
                if(abs(a - x) > abs(b - x)) {
                    maxi = max(maxi, abs(b - x));
                    it++;
                    st.erase(it);
                }
                else {
                    maxi = max(maxi, abs(a - x));
                    st.erase(it);
                }
            }
        }
    }
    else {
        for(auto &x : st) {
            auto it = st2.lower_bound(x);
            if(it == st2.end()) {
                it--;
                maxi = max(maxi, abs(*it - x));
                st2.erase(it);
            }
            else if(it == st2.begin()) {
                maxi = max(maxi, abs(*it - x));
                st2.erase(it);
            }
            else {
                int b = *it;
                it--;
                int a = *it;
                if(abs(a - x) > abs(b - x)) {
                    maxi = max(maxi, abs(b - x));
                    it++;
                    st2.erase(it);
                }
                else {
                    maxi = max(maxi, abs(a - x));
                    st2.erase(it);
                }
            }
        }
    }
    cout << maxi << '\n';
}
signed main() {
    ios_base::sync_with_stdio(false);
    cin.tie(nullptr);
    cout.tie(nullptr);
    int t = 1;
    //cin >> t;
    while (t--) {
        solve();
    }
}

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