Submission #67134

#	Time	Username	Problem	Language	Result	Execution time	Memory
67134		MrTEK	Hidden Sequence (info1cup18_hidden)	C++14	0 / 100	3 ms	644 KiB

hidden

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

using namespace std;
#define mp make_pair
#define pb push_back
#define len(a) (int)a.size()
#define fi first
#define sc second
#define d1(w) cerr<<#w<<":"<<w<<endl;
#define d2(w,c) cerr<<#w<<":"<<w<<" "<<#c<<":"<<c<<endl;
#define d3(w,c,z) cerr<<#w<<":"<<w<<" "<<#c<<":"<<c<<" "<<#z<<":"<<z<<endl;
#define left ind+ind
#define right ind+ind+1
#define mid (l+r)/2
#define FAST_IO ios_base::sync_with_stdio(false);
#define endl '\n'

const int maxn = 620;
const long long LINF = 1e18;
const int LOG = 31;
const int INF = 1e9;
const int N = 1e3 + 5;
const int M = 4;
const int SQ = 350;
const int MOD = 998244353;

vector < vector <int> > allvec[2];
vector <vector <int> > seq;

int sz[2];
bool fl;
vector <int > v;
vector <int> vec;

void dfs(int step,int w) {
    if (step > sz[w]) {
        allvec[w].pb(v);
        return; 
    }
    for (int i = 0 ; i < 2 ; i++) {
        v.pb(i);
        dfs(step + 1,w);
        v.pop_back();
    }
}

bool my_isSubsequence (vector < int > v, vector <int> v2) {

    int i = 0;
    for (auto it : v)
    {
        while (i < len(v2) && it != v2[i]) i ++;
        if (i == len(v2)) return 0;
        i ++;
    }
    return 1;
}

void last_dfs(int x,int y,vector <int> v) {
    if (y == sz[0] + 1) {
        fl = fl & isSubsequence(vec);
        return;
    }
    if (x == sz[1] - 1) {
        return;
    }
    d2(x,y);
    vec.pb(v[x + 1]);
    last_dfs(x + 1, y + 1,v);
    vec.pop_back();
    last_dfs(x + 1,y,v);
}


bool check(vector <int> v) {
    fl = true;
    last_dfs(-1,0,v);
    return fl;
} 

vector < int > findSequence (int N)
{
    vector < int > ans (N, 0);
    if (N > 10) exit(0);
    sz[0] = N / 2 + 1;
    sz[1] = N;
    dfs(1,0);
    dfs(1,1);
    for (int i = 0 ; i < len(allvec[0]) ; i++) {
        if (isSubsequence(allvec[0][i])) {
            seq.pb(allvec[0][i]);
        }
    }
    for (int i = 0 ; i < len(allvec[1]) ; i++) {
        bool flag = true;
        for (int j = 0 ; j < len(seq); j++) {
            if (my_isSubsequence(seq[j],allvec[1][i]) == false) {
                flag = false; break;
            }
        }
        if (flag && check(allvec[1][i])) {
            for (int j = 0 ; j < N ; j++) ans[j] = allvec[1][i][j];
            break;
        }
    }
    return ans;
}

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