Submission #199220

#	Time	Username	Problem	Language	Result	Execution time	Memory
199220		Bagritsevich_Stepan	Hidden Sequence (info1cup18_hidden)	C++14	0 / 100	56 ms	248 KiB

hidden

//#include "/Users/stdc++.h"
#include <bits/stdc++.h>
#include "grader.h"

using namespace std;

#define mp make_pair
#define pb push_back
#define fast_io ios_base::sync_with_stdio(0); cin.tie(0); cout.tie(0);
#define pii pair < int, int >
#define fs first
#define sc second
#define getfiles ifstream cin("input.txt"); ofstream cout("output.txt");
#define sz(x) (int)x.size()
#define all(x) x.begin(), x.end()
#define rall(x) x.rbegin(), x.rend()

typedef long long ll;
typedef long double ld;

const int INF = 2e9;
const ll BIG_INF = 1e18;
const ll MOD = 1e9 + 7;

const int maxn = 1e5 + 5;

vector < int > findSequence(int n) {
    const int maxlen = n / 2 + 1;
    int num = 1;
    
    vector < int > seq;
    while (sz(seq) < maxlen && isSubsequence(seq))
        seq.pb(num);
    if (!isSubsequence(seq)) seq.pop_back();
    
    if (sz(seq) == maxlen) {
        num ^= 1;
        
        seq.clear();
        while (isSubsequence(seq))
            seq.pb(num);
        seq.pop_back();
    }
    
    int cnt = 0, cnt_nums = sz(seq);
    vector < int > res(n, num ^ 1);
    for (int i = 0; i < cnt_nums; i++) {
        while (sz(seq) <= maxlen && isSubsequence(seq)) {
            seq.insert(seq.begin(), num ^ 1);
            cnt++;
        }
        seq.erase(seq.begin());
        cnt--;
        
        vector < int > rev_seq(i + 1, num);
        while (sz(rev_seq) <= maxlen && isSubsequence(rev_seq))
            rev_seq.pb(num ^ 1);
        rev_seq.pop_back();
        
        res[max(cnt, n - cnt_nums - (sz(rev_seq) - (i + 1))) + i] = num;
        seq.pop_back();
    }
    
    return res;
}

Compilation message (stderr)

grader.cpp: In function 'int main()':
grader.cpp:28:43: warning: format '%d' expects argument of type 'int', but argument 3 has type 'std::vector<int>::size_type {aka long unsigned int}' [-Wformat=]
     fprintf (fifo_out, "%d\n", ans.size ());
                                ~~~~~~~~~~~^
grader.cpp:29:20: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
     for (int i=0; i<ans.size () && i < N; i++)
                   ~^~~~~~~~~~~~

• Subtask 1: 0 / 20
• Subtask 2: 0 / 80