結果

問題 No.2570 最大最大公約数
ユーザー evimaevima
提出日時 2023-12-02 16:10:05
言語 C++17
(gcc 12.3.0 + boost 1.83.0)
結果
AC  
実行時間 42 ms / 2,000 ms
コード長 6,922 bytes
コンパイル時間 2,802 ms
コンパイル使用メモリ 241,672 KB
実行使用メモリ 6,676 KB
最終ジャッジ日時 2023-12-02 16:10:12
合計ジャッジ時間 4,900 ms
ジャッジサーバーID
（参考情報） 		judge14 / judge12
このコードへのチャレンジ
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テストケース

テストケース表示
入力 結果 実行時間
実行使用メモリ
testcase_00 AC 35 ms
6,676 KB
testcase_01 AC 37 ms
6,676 KB
testcase_02 AC 42 ms
6,676 KB
testcase_03 AC 17 ms
6,676 KB
testcase_04 AC 30 ms
6,676 KB
testcase_05 AC 31 ms
6,676 KB
testcase_06 AC 33 ms
6,676 KB
testcase_07 AC 32 ms
6,676 KB
testcase_08 AC 32 ms
6,676 KB
testcase_09 AC 32 ms
6,676 KB
testcase_10 AC 31 ms
6,676 KB
testcase_11 AC 30 ms
6,676 KB
testcase_12 AC 35 ms
6,676 KB
testcase_13 AC 32 ms
6,676 KB
testcase_14 AC 25 ms
6,676 KB
testcase_15 AC 26 ms
6,676 KB
testcase_16 AC 23 ms
6,676 KB
testcase_17 AC 2 ms
6,676 KB
testcase_18 AC 2 ms
6,676 KB
testcase_19 AC 2 ms
6,676 KB
testcase_20 AC 2 ms
6,676 KB
testcase_21 AC 2 ms
6,676 KB
testcase_22 AC 1 ms
6,676 KB
testcase_23 AC 1 ms
6,676 KB
testcase_24 AC 2 ms
6,676 KB
testcase_25 AC 2 ms
6,676 KB
testcase_26 AC 2 ms
6,676 KB
testcase_27 AC 2 ms
6,676 KB
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 # 

// Enjoy your stay. Code by evima

#include <atcoder/modint>
#include <atcoder/segtree>
using namespace atcoder;
using mint = modint998244353;  // modint;

#include <bits/stdc++.h>
using namespace std;

using ld = long double;
using ll = long long;
using lll = __int128;
using pl = pair<ll, ll>;
using vl = vector<ll>;
using vm = vector<mint>;
using vp = vector<pl>;
using vs = vector<string>;
using vvl = vector<vl>;
using LOOPVAR_TYPE = ll;

#define all(x) (x).begin(), (x).end()
#define mset(a, v) memset(a, v, sizeof(a))
#define sq(x) ((x) * (x))
#define sz(x) ll((x).size())
#define GET_MACRO(_1, _2, _3, _4, NAME, ...) NAME
#define rep1(i, n) rep2(i, 0, n)
#define rep2(i, a, b) \
    for (LOOPVAR_TYPE i = LOOPVAR_TYPE(a); i < LOOPVAR_TYPE(b); i++)
#define rep3(i, a, b, c)                   \
    for (LOOPVAR_TYPE i = LOOPVAR_TYPE(a); \
         (c) > 0 ? i < LOOPVAR_TYPE(b) : i > LOOPVAR_TYPE(b); i += (c))
#define rep(...) GET_MACRO(__VA_ARGS__, rep3, rep2, rep1)(__VA_ARGS__)

#define eb emplace_back
#define fir first
#define sec second
#define mp make_pair
#define mt make_tuple

const int PREC = 20;

const ld EPS = 1e-9;
const ld PI = 3.14159265358979323846L;
const ll INF = 1070000000LL;
const ll MOD = 998244353LL;  // 1000000007LL;
const ll inf = 2.07e18;

const string IMPOSSIBLE = "IMPOSSIBLE";
const string POSSIBLE = "POSSIBLE";

void fast_io() {
    cin.tie(NULL);
    ios_base::sync_with_stdio(false);
}
ll lin() {
    ll x;
    cin >> x;
    return x;
}
string input() {
    string s;
    cin >> s;
    return s;
}
vl vin(int n) {
    vl v(n);
    rep(i, n) cin >> v[i];
    return v;
}
vs vsin(int n) {
    vs v(n);
    rep(i, n) cin >> v[i];
    return v;
}
vvl vvin(int n, int m) {
    vvl w(n, vl(m));
    rep(i, n) rep(j, m) cin >> w[i][j];
    return w;
}
vvl vvin(int n) { return vvin(n, n); }
template <typename T>
vector<T> cat(vector<T> v, const vector<T>& w) {
    for (T x : w) v.eb(x);
    return v;
}
template <typename T>
bool chmin(T& a, const T& b) {
    return (b < a) ? (a = b, true) : false;
}
template <typename T>
bool chmax(T& a, const T& b) {
    return (a < b) ? (a = b, true) : false;
}
template <typename T>
map<T, ll> freq(const vector<T>& v) {
    map<T, ll> ret;
    for (T x : v) ++ret[x];
    return ret;
}
template <typename T>
vector<T> reversed(vector<T> v) {
    reverse(all(v));
    return v;
}
template <typename T>
vector<T> sorted(vector<T> v) {
    sort(all(v));
    return v;
}
template <typename T>
vector<T> sub(const vector<T>& v, int from, int to) {
    vector<T> ret;
    copy(&v[from], &v[to], back_inserter(ret));
    return ret;
}
template <typename T>
string str(const T& x) {
    stringstream ss;
    ss << setprecision(PREC);
    ss << x;
    return ss.str();
}
string str(const mint& x) { return str(x.val()); }
template <typename Tuple, size_t... I>
array<int, sizeof...(I)> str_tuple_impl(stringstream& ss, Tuple&& t,
                                        index_sequence<I...>) {
    return {{(void(ss << str(get<I>(t)) << " "), 0)...}};
}
template <typename Tuple>
string str_tuple(Tuple&& t) {
    stringstream ss;
    ss << setprecision(PREC);
    str_tuple_impl(ss, forward<Tuple>(t),
                   make_index_sequence<tuple_size<decay_t<Tuple>>::value>{});
    string s = ss.str();
    if (s.size() > 0) s.pop_back();
    return s;
}
template <typename T, typename U>
string str(const pair<T, U>& p) {
    return str_tuple(p);
}
template <typename... T>
string str(const tuple<T...>& t) {
    return str_tuple(t);
}
template <typename T>
string str(const vector<T>& v) {
    stringstream ss;
    ss << setprecision(PREC);
    rep(i, sz(v)) ss << str(v[i]) << (i < sz(v) - 1 ? " " : "");
    return ss.str();
}
template <typename T>
T sum(const vector<T>& v) {
    return accumulate(all(v), 0LL);
}
template <typename T>
vector<vector<T>> trans(const vector<vector<T>>& w) {
    int n = sz(w), m = sz(w[0]);
    vector<vector<T>> ret(m, vector<T>(n));
    rep(i, m) rep(j, n) ret[i][j] = w[j][i];
    return ret;
}
vector<string> trans(const vector<string>& w) {
    int n = sz(w), m = sz(w[0]);
    vector<string> ret(m, string(n, ' '));
    rep(i, m) rep(j, n) ret[i][j] = w[j][i];
    return ret;
}
template <typename T>
void print1(T&& x, const string& end) {
    cout << str(x) << end;
}
void pr() { print1("", ""); }
template <typename T, typename... U>
void pr(T&& head, U&&... tail) {
    print1(head, "");
    pr(forward<U>(tail)...);
}
void print() { print1("", "\n"); }
template <typename T, typename... U>
void print(T&& head, U&&... tail) {
    print1(head, " ");
    print(forward<U>(tail)...);
}
template <typename T>
void eprint1(T&& x, const string& end) {
    cerr << str(x) << end;
}
void eprint() { eprint1("", "\n"); }
template <typename T, typename... U>
void eprint(T&& head, U&&... tail) {
    eprint1(head, " ");
    eprint(forward<U>(tail)...);
}
template <typename... T>
void quit(T&&... x) {
    print(forward<T>(x)...);
    exit(0);
}
void yn(bool cnd) {
    if (cnd)
        print("Yes");
    else
        print("No");
}
template <typename T, typename U>
void yn(bool cnd, T&& yes, U&& no) {
    if (cnd)
        print(yes);
    else
        print(no);
}
void zip(vl& v) {
    vl w = v;
    sort(all(w));
    int n = unique(all(w)) - w.begin();
    for (ll& x : v) x = lower_bound(&w[0], &w[n], x) - &w[0];
}
vl zipped(vl v) {
    zip(v);
    return v;
}
map<ll, ll> zipmap(vl v) {
    map<ll, ll> ret;
    sort(all(v));
    v.erase(unique(all(v)), v.end());
    rep(i, sz(v)) ret[v[i]] = i;
    return ret;
}

void init(){};

int N;
vector<vector<pair<int, ll>>> g, gr;

vl bfs(int s, int r = 0){
    vl dist(N, inf);
    priority_queue<pair<ll, int>, vector<pair<ll, int>>, greater<pair<ll, int>>> q;
    q.push({0, s});
    dist[s] = 0;
    while(!q.empty()){
        auto [c, v] = q.top(); q.pop();
        if(dist[v] < c) continue;
        for(auto& [u, t] : (r == 0 ? g : gr)[v]){
            ll nd = dist[v] + t;
            if(nd < dist[u]) {
                dist[u] = nd;
                q.push({nd, u});
            }
        }
    }
    return dist;
}

unordered_set<ll> s;

void div(ll N){
    for(ll i = 1; i * i <= N; ++i){
        if(N % i == 0){
            s.insert(i);
            if(i * i != N) s.insert(N / i);
        }
    }
    //return ret;
}

void solveOne() {
    int N, K;
    cin >> N >> K;
    vl A(N);
    rep(i, N) {
        cin >> A[i];
        div(A[i]);
        
    }
    vl v;
    for(ll x: s) v.eb(x);
    sort(all(v));
    reverse(all(v));
    for(ll x: v){
        ll cnt = 0;
        bool ok = 1;
        for(ll y: A){
            ll d = min(y % x, x - y % x);
            cnt += d;
            if(cnt > K) { ok = 0; break; }
        }
        if(ok){
            print(x);
            return;
        }
    }
}

int main() {
    int T=1;
    //cin >> T;
    init();
    rep(i, 1, T + 1) {
        //cout << "Case #" << i << ": ";
        solveOne();
    }
}
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