#613851 (C++14) No.1376 Simple LPS Problem

• 問題: No.1376 Simple LPS Problem
• ユーザー: Enjapma_kyopro
• 提出日時: 2021-02-05 22:33:52
• 言語: C++14 (gcc 12.3.0 + boost 1.83.0)
• 結果: AC
• 実行時間: 6 ms / 2,000 ms
• コード長: 3,632 bytes
• コンパイル時間: 1,613 ms
• コンパイル使用メモリ: 176,480 KB
• 実行使用メモリ: 6,948 KB
• 最終ジャッジ日時: 2024-07-02 13:08:13
• 合計ジャッジ時間: 3,823 ms
• ジャッジサーバーID （参考情報）: judge4 / judge2

入力	結果	実行時間; 実行使用メモリ
testcase_00	AC	2 ms; 6,812 KB
testcase_01	AC	2 ms; 6,940 KB
testcase_02	AC	2 ms; 6,940 KB
testcase_03	AC	2 ms; 6,940 KB
testcase_04	AC	2 ms; 6,940 KB
testcase_05	AC	2 ms; 6,944 KB
testcase_06	AC	2 ms; 6,944 KB
testcase_07	AC	1 ms; 6,944 KB
testcase_08	AC	2 ms; 6,940 KB
testcase_09	AC	2 ms; 6,944 KB
testcase_10	AC	2 ms; 6,944 KB
testcase_11	AC	2 ms; 6,940 KB
testcase_12	AC	2 ms; 6,940 KB
testcase_13	AC	1 ms; 6,944 KB
testcase_14	AC	2 ms; 6,940 KB
testcase_15	AC	2 ms; 6,940 KB
testcase_16	AC	2 ms; 6,940 KB
testcase_17	AC	2 ms; 6,944 KB
testcase_18	AC	2 ms; 6,940 KB
testcase_19	AC	2 ms; 6,944 KB
testcase_20	AC	2 ms; 6,940 KB
testcase_21	AC	2 ms; 6,940 KB
testcase_22	AC	2 ms; 6,944 KB
testcase_23	AC	2 ms; 6,944 KB
testcase_24	AC	2 ms; 6,944 KB
testcase_25	AC	2 ms; 6,940 KB
testcase_26	AC	2 ms; 6,940 KB
testcase_27	AC	2 ms; 6,940 KB
testcase_28	AC	2 ms; 6,948 KB
testcase_29	AC	2 ms; 6,940 KB
testcase_30	AC	2 ms; 6,940 KB
testcase_31	AC	2 ms; 6,940 KB
testcase_32	AC	2 ms; 6,940 KB
testcase_33	AC	2 ms; 6,944 KB
testcase_34	AC	2 ms; 6,940 KB
testcase_35	AC	2 ms; 6,944 KB
testcase_36	AC	2 ms; 6,940 KB
testcase_37	AC	2 ms; 6,940 KB
testcase_38	AC	2 ms; 6,940 KB
testcase_39	AC	2 ms; 6,940 KB
testcase_40	AC	2 ms; 6,944 KB
testcase_41	AC	2 ms; 6,944 KB
testcase_42	AC	3 ms; 6,944 KB
testcase_43	AC	6 ms; 6,944 KB
testcase_44	AC	2 ms; 6,944 KB
testcase_45	AC	2 ms; 6,940 KB
testcase_46	AC	3 ms; 6,940 KB
testcase_47	AC	2 ms; 6,940 KB
testcase_48	AC	4 ms; 6,940 KB
testcase_49	AC	2 ms; 6,944 KB
testcase_50	AC	2 ms; 6,944 KB
testcase_51	AC	5 ms; 6,944 KB
testcase_52	AC	2 ms; 6,940 KB
testcase_53	AC	2 ms; 6,940 KB
testcase_54	AC	3 ms; 6,944 KB
testcase_55	AC	2 ms; 6,940 KB
testcase_56	AC	2 ms; 6,944 KB
testcase_57	AC	2 ms; 6,940 KB
testcase_58	AC	3 ms; 6,944 KB
testcase_59	AC	4 ms; 6,940 KB
testcase_60	AC	1 ms; 6,944 KB
testcase_61	AC	2 ms; 6,940 KB

ソースコード

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

// using mint = long double;
// using mint = modint998244353;
// using mint = modint1000000007;

typedef long long ll;
typedef pair<ll, ll> P;
typedef pair<P, ll> T;
typedef pair<ll, vector<ll> > Pd;

const ll INF = 1e18;
const ll fact_table = 3200008;

priority_queue <ll> pql;
priority_queue <P> pqp;
//big priority queue
// priority_queue <ll, vector<ll>, greater<ll> > pqls;
priority_queue <P, vector<P>, greater<P> > pqps;
//small priority queue
//top pop

ll dx[8] = {1, 0, -1, 0, 1, 1, -1, -1};
ll dy[8] = {0, 1, 0, -1, -1, 1, 1, -1};
//↓,→,↑,←

/*
#define endl "\n"
#ifdef ENJAPMA
#undef endl
#endif
*/

#define p(x) cout<<x<<endl;
#define el cout<<endl;
#define pe(x) cout<<x<<" ";
#define ps(x) cout<<fixed<<setprecision(25)<<x<<endl;
#define pu(x) cout<<(x);
#define pb push_back
#define lb lower_bound
#define ub upper_bound
#define pc(x) cout << x << ",";
#define rep(i, n) for (ll i = 0; i < (n); i ++)
#define rep2(i, a, b) for (ll i = a; i <= (b); i++)
#define rep3(i, a, b) for (ll i = a; i >= (b); i--)

typedef vector<ll> vec;
typedef vector<vector<ll>> mat;

// vec v(n) -> 長さnのベクトルを宣言
// mat dp(h, vec(w)) -> h * w の行列を宣言

const ll mod = 998244353ll;
// const ll mod = 1000000007ll;

ll mypow(ll a, ll b, ll m = mod) {ll x = 1; while (b) {while (!(b & 1)) {(a *= a) %= m; b >>= 1;}(x *= a) %= m; b--;} return x;}
vec rv(ll read) { vec res(read); for (int i = 0; i < read; i++) { cin >> res[i]; } return res;}
void YES(bool cond) { if (cond) { p("YES");} else { p("NO");} return;}
void Yes(bool cond) { if (cond) { p("Yes");} else { p("No");} return;}
void line() { p("--------------------"); return;}

/*
ll fact[fact_table + 5], rfact[fact_table + 5];

void c3_init() {
    fact[0] = rfact[0] = 1;
    for (ll i = 1; i <= fact_table; i++) {
        fact[i] = (fact[i - 1] * i) % mod;
    }
    rfact[fact_table] = mypow(fact[fact_table], mod - 2, mod);
    for (ll i = fact_table; i >= 1; i--) {
        rfact[i - 1] = rfact[i] * i;
        rfact[i - 1] %= mod;
    }
    return;
}
ll c3(ll n, ll r) {
    return (((fact[n] * rfact[r]) % mod ) * rfact[n - r]) % mod;
}
*/


bool icpc = false;
bool multicase = false;

ll n, k;

bool find_length(string s, ll len) {
    ll m = s.size();
    for (int i = 0; i + len <= m; i++) {
        string t = s.substr(i, len);
        string u = t;
        reverse(u.begin(), u.end());
        if (t == u) return true;
    }
    return false;
}

void bruteforce() {
    ll nbit = (1ll << n);
    for (ll i = 0; i < nbit; i++) {
        string s = bitset<15>(i).to_string().substr(15 - n);
        bool ok = (find_length(s, k));
        for (int j = k + 1; j <= n; j++) {
            if (find_length(s, j)) ok = false;
        }
        if (ok) {
            p(s);
            return;
        }
    }
    p("-1");
    return;
}

bool solve () {
    cin >> n >> k;
    if (n <= 15) {
        bruteforce();
        return true;
    } else if (k <= 3) {
        p(-1);
    } else {
        for (int i = 0; i < k; i++) {
            pu(0);
        }
        string t = "110100";
        for (int i = k; i < n; i++) {
            pu(t[(i - k) % 6]);
        }
        el;
    }
    return true;
}

int main() {

    ios::sync_with_stdio(false);
    cin.tie(nullptr);

    if (icpc) {
        while (solve());
        return 0;
    }
    ll q, testcase = 1;
    if (multicase) {
        cin >> q;
    } else {
        q = 1;
    }
    while (q--) {
        // pu("Case ");pu("#");pu(testcase);pu(": ");
        solve();
        testcase++;
    }

// solve();
    return 0;
}