結果

問題 No.1597 Matrix Sort
ユーザー tomo0608
提出日時 2021-07-09 22:16:51
言語 C++17
(gcc 13.3.0 + boost 1.87.0)
結果
AC  
実行時間 238 ms / 1,500 ms
コード長 4,646 bytes
コンパイル時間 6,144 ms
コンパイル使用メモリ 276,456 KB
最終ジャッジ日時 2025-01-22 22:01:44
ジャッジサーバーID
（参考情報） 		judge4 / judge1
このコードへのチャレンジ
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ファイルパターン 結果
sample AC * 3
other AC * 27
権限があれば一括ダウンロードができます

ソースコード

diff # 

/**
*    author:  tomo0608
*    created: 09.07.2021 21:52:08
**/

#pragma GCC optimize("Ofast")
#include <bits/stdc++.h>
using namespace std;
#if __has_include(<atcoder/all>)
#include<atcoder/all>
using namespace atcoder;
#endif

typedef long long ll;
typedef long double ld;
template <class T> using V = vector<T>;
template <class T> using VV = V<V<T>>;
template <class T> using VVV = V<VV<T>>;
typedef pair<int,int> pii;
typedef pair<long long, long long> pll;

#define all(x) x.begin(),x.end()
#define rep1(a)          for(long long i = 0; i < a; i++)
#define rep2(i, a)       for(long long i = 0; i < a; i++)
#define rep3(i, a, b)    for(long long i = a; i < b; i++)
#define rep4(i, a, b, c) for(long long i = a; i < b; i += c)
#define drep1(a)          for(long long i = a-1; i >= 0; i--)
#define drep2(i, a)       for(long long i = a-1; i >= 0; i--)
#define drep3(i, a, b)    for(long long i = a-1; i >= b; i--)
#define drep4(i, a, b, c) for(long long i = a-1; i >= b; i -= c)
#define overload4(a, b, c, d, e, ...) e
#define rep(...) overload4(__VA_ARGS__, rep4, rep3, rep2, rep1)(__VA_ARGS__)
#define drep(...) overload4(__VA_ARGS__, drep4, drep3, drep2, drep1)(__VA_ARGS__)
#define unique(a) a.erase(unique(a.begin(),a.end()),a.end())
template<class... T>void input(T&... a){(cin >> ... >> a);};
#define INT(...) int __VA_ARGS__; input(__VA_ARGS__)
#define LL(...) ll __VA_ARGS__; input(__VA_ARGS__)
#define STRING(...) string __VA_ARGS__; input(__VA_ARGS__)
void print(){cout << '\n';}
template<class T, class... Ts>void print(const T& a, const Ts&... b){cout << a; (cout << ... << (cout << ' ', b)); cout << '\n';}
template<class T> using priority_queue_rev = priority_queue<T, vector<T>, greater<T> >;
template<class T, class U> inline bool chmax(T &a, const U &b) { if (a<b) { a=b; return 1; } return 0; }
template<class T, class U> inline bool chmin(T &a, const U &b) { if (a>b) { a=b; return 1; } return 0; }
template<class T1, class T2> istream &operator>>(istream &is, pair<T1, T2> &p) { is >> p.first >> p.second; return is; }
template<class T1, class T2> ostream &operator<<(ostream &os, const pair<T1, T2> &p) { os << '(' << p.first << ", " << p.second << ')'; return os; }
template<class T> istream &operator>>(istream &is, vector<T> &v) { for (auto &e : v) is >> e; return is; }
template<class T> ostream &operator<<(ostream &os, const vector<T> &v) { for (auto &e : v) os << e << ' '; return os; }
template<typename T> ostream& operator << (ostream& os, set<T>& set_var) {os << "{"; for (auto itr = set_var.begin(); itr != set_var.end(); itr++) {os << *itr;++itr;if(itr != set_var.end()) os << ", ";itr--;}os << "}";return os;}
template <typename T, typename U> ostream &operator<<(ostream &os, map<T, U> &map_var) {os << "{";for(auto itr = map_var.begin(); itr != map_var.end(); itr++) {os << *itr;itr++;if (itr != map_var.end()) os << ", ";itr--;}os << "}";return os;}
#ifdef __LOCAL
void debug_out(){ cerr << endl;}
template < class Head, class... Tail> void debug_out(Head H, Tail... T) { cerr << ' ' << H; debug_out(T...);}
#define debug(...) cerr << 'L' << __LINE__ << " [" << #__VA_ARGS__ << "]:", debug_out(__VA_ARGS__)
#define dump(x) cerr << 'L' << __LINE__ << " " << #x << " = " << (x) << endl
#else
#define debug(...) (void(0))
#define dump(x) (void(0))
#endif
template<class T> inline int count_between(vector<T> &a, T l, T r) { return lower_bound(all(a), r) - lower_bound(all(a), l); } // [l, r)
#define mp make_pair
#define bit(n, k) ((n >> k) & 1) /*nのk bit目*/
template <typename T>T mypow(T x, ll n){T ret = 1;while(n > 0){if(n & 1)(ret *= x);(x *= x);n >>= 1;}return ret;}
#define endl '\n'
int dx[8] = {1, 0, -1, 0, 1, 1, -1, -1};
int dy[8] = {0, 1, 0, -1, 1, -1, -1, 1};

void solve(){
    LL(n,k,p);
    V<ll> a(n),b(n);cin >> a >> b;
    sort(all(a)), sort(all(b));
    V<ll> sum_b(2*p,0);
    rep(i,n)sum_b[b[i]]++;
    rep(i,2*p-1)sum_b[i+1] += sum_b[i];
    ll ok = p-1, ng = -1;
    auto check = [&](ll x)->bool{
        // a[i] + b[j] <= x or p <= a[i] + b[j] <= p + x となるものがk個以上あるか
        ll s = 0;
        rep(i,n){
            // b[j] <= x - a[i] or p - a[i]-1 < b[j] <= p + x - a[i]
            s += sum_b[p+x-a[i]] - sum_b[p-a[i]-1];
            if(x-a[i] >= 0)s += sum_b[x-a[i]];
        }
        return s >= k;
    };
    while(ok - ng > 1){
        ll mid = (ok + ng)/2;
        if(check(mid))ok = mid;
        else ng = mid;
    }
    print(ok);
}

int main() {
    cin.tie(0);
    ios_base::sync_with_stdio(false);
    cout << setprecision(20);
    int codeforces = 1;
    //cin >> codeforces;
    while(codeforces--){
        solve();
    }
    return 0;
}
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