Submission #472081

#	Time	Username	Problem	Language	Result	Execution time	Memory
472081		nickmet2004	Hidden Sequence (info1cup18_hidden)	C++11	Compilation error	0 ms	0 KiB

hidden

#include<bits/stdc++.h>
using namespace std;
int N , Q;
bool ask(int x , int y , int c){
    vector<int> v;
    while(x--)v.emplace_back(c);
    while(y--)v.emplace_back(c^1);
    int w = 0;
    if(N){
        w = N - x;
        while(w--)v.emplace_back(c);
    }
    return isSubsequence(v);
}
vector<int> findSequence(int n){
    vector<int> ans;
    ans.resize(n);
    int n0 = 0 , n1 = 0;
    for(int i =1; i <= n; ++i){
        if(!ask(i , 0, 0)){
            n0 = i - 1;
            n1 = n - n0;
            break;
        }
    }
    N = n0;
    if(n0<n1) N = n1 , Q^=1;
    int a= 0 , b = 0;
    for(int i = 1; i <= n; ++i){
        if(!ask(a , b + 1 , Q)){
            b =0;
            a++;
            ans.push_back(Q);
        }else{
            b++;
            ans.push_back(Q^1);
        }
    }
    return ans;
}

Compilation message (stderr)

hidden.cpp: In function 'bool ask(int, int, int)':
hidden.cpp:13:12: error: 'isSubsequence' was not declared in this scope
   13 |     return isSubsequence(v);
      |            ^~~~~~~~~~~~~
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
grader.cpp:29:20: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   29 |     for (int i=0; i<ans.size () && i < N; i++)
      |                   ~^~~~~~~~~~~~