Submission #1209857

#	Time	Username	Problem	Language	Result	Execution time	Memory
1209857		M_SH_O	Hidden Sequence (info1cup18_hidden)	C++20	59 / 100	2 ms	428 KiB

hidden

#include <bits/stdc++.h>
#include "grader.h"
/*#include <ext/pb_ds/assoc_container.hpp>
#include <ext/pb_ds/tree_policy.hpp>*/

#define ll long long
#define ll1 long long
#define ull unsigned long long
#define dou long double
#define str string
#define vll vector<ll>
#define vi vector<int>
#define pll pair<ll, ll>
#define vpll vector<pll>
#define vbool vector<bool>
#define vstr vector<str>
#define vvll vector<vll>
#define pb push_back
#define pf push_front
//#define endl "\n"
#define fr first
#define se second
// #define sortcmp(a) sort(a.begin(), a.end(), cmp)
#define sort(a) sort(a.begin(), a.end())
#define reverse(a) reverse(a.begin(), a.end())
#define speed ios_base::sync_with_stdio(0);cin.tie(0);cout.tie(0)
#define INF 5000000000000000000
#define ordered_set tree<ll, null_type, less_equal<ll>, rb_tree_tag, tree_order_statistics_node_update>

using namespace std;
//using namespace __gnu_pbds;

mt19937 rng(1488);
ll randll(ll l, ll r){
    return uniform_int_distribution<ll>(l, r)(rng);
}

/*vi A;

bool isSubsequence(vi& a) {
    ll x = 0;
    for (int i : a) {
        cout << i << ' ';
    }
    cout << endl;
    if (a.empty()) return 1;
    for (int i = 0; i < A.size(); i ++) {
        if (A[i] == a[x]) x ++;
        if (x == a.size()) return 1;
    }
    return 0;
}*/

vector < int > findSequence (int n) {
    vi a;

    for (int i = 0; i < n/2+1; i ++) {
        a.pb(0);
    }
    if (isSubsequence(a)) {
        a.clear();
        ll k = 0;
        for (int i = 0; i < n; i ++) {
            a.pb(1);
            if (!isSubsequence(a)) break;
        }
        k = a.size()-1;
        vll b(k+1);
        ll k1 = 0;
        ll pos = -1;

        for (int i = 0; i < k+1; i ++) {
            a.clear();
            for (int j = 0; j < i; j ++) {
                a.pb(1);
            }
            ll x = 0;
            for (int j = 0; j <(n-k)/2+1; j++) {
                a.pb(0);
                for (int i1 = 0; i1 < k-i; i1 ++) {
                    a.pb(1);
                }
                if (!isSubsequence(a)) break;
                for (int i1 = 0; i1 < k-i; i1 ++) {
                    a.pop_back();
                }
                x ++;
            }
            b[i] = x;
            if (x == (n-k)/2+1) pos = i;
            k1 += x;
        }
        if (pos != -1) b[pos] += (n-k)-k1;
        a.clear();
        for (int i = 0; i < k+1; i ++) {
            for (int j = 0; j < b[i]; j ++) {
                a.pb(0);
            }
            if (i < k) a.pb(1);
        }
        return a;
    }
    else {
        a.clear();
        ll k = 0;
        for (int i = 0; i < n; i ++) {
            a.pb(0);
            if (!isSubsequence(a)) break;
        }
        k = a.size()-1;
        vll b(k+1);
        ll k1 = 0;
        ll pos = -1;

        for (int i = 0; i < k+1; i ++) {
            a.clear();
            for (int j = 0; j < i; j ++) {
                a.pb(0);
            }
            ll x = 0;
            for (int j = 0; j <(n-k)/2+1; j++) {
                a.pb(1);
                for (int i1 = 0; i1 < k-i; i1 ++) {
                    a.pb(0);
                }
                if (!isSubsequence(a)) break;
                for (int i1 = 0; i1 < k-i; i1 ++) {
                    a.pop_back();
                }
                x ++;
            }
            b[i] = x;
            if (x == (n-k)/2+1) pos = i;
            k1 += x;
        }
        if (pos != -1) b[pos] += (n-k)-k1;
        a.clear();
        for (int i = 0; i < k+1; i ++) {
            //cout << b[i] << ' ';
            for (int j = 0; j < b[i]; j ++) {
                a.pb(1);
            }
            if (i < k) a.pb(0);
        }
        //cout << endl;
        return a;
    }
}

/*int main() {
    speed;
    srand(time(0));

    ll n;
    cin >> n;
    vi a(n);
    for (int i =0 ; i < n; i ++) {
        cin >> a[i];
    }
    A = a;

    vi res = findSequence(n);

    for (int i : res) {
        cout << i << ' ';
    }
    cout << endl;
}*/

Compilation message (stderr)

grader.cpp: In function 'int main()':
grader.cpp:28:26: warning: format '%d' expects argument of type 'int', but argument 3 has type 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wformat=]
   28 |     fprintf (fifo_out, "%d\n", ans.size ());
      |                         ~^     ~~~~~~~~~~~
      |                          |              |
      |                          int            std::vector<int>::size_type {aka long unsigned int}
      |                         %ld

• Subtask 1: 15 / 20
• Subtask 2: 44 / 80