Submission #400162

#	Time	Username	Problem	Language	Result	Execution time	Memory
400162		EJOI2019Andrew	Martian DNA (IOI16_dna)	C++14	0 / 100	1 ms	296 KiB

dna

#include "dna.h"

#include <bits/stdc++.h>
  using namespace std;
  
    vector<  string > vc;
    void r(int n, string s="")
    {
           if(s.length()==n)
            vc.push_back(s);
           else
           {

                 r(n, s+'0');
                 r(n, s+'1');
           }
    }
std::string analyse(int n, int t) {
     if(n<=4)
     {
        r(n);

           for(auto c:vc)
           {
                  if(make_test(c))
                    return c;

           }

     }
     else
     {
           r(4);
            for(auto c:vc)
            {
                 if(make_test('0'+c))
                    return '0'+c;


                 if(make_test('1'+c))
                    return '1'+c;


                 if(make_test(c+'1'))
                    return c+'1';


                 if(make_test(c+'0'))
                    return c+'0';


            }
     }
}

Compilation message (stderr)

dna.cpp: In function 'void r(int, std::string)':
dna.cpp:9:25: warning: comparison of integer expressions of different signedness: 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare]
    9 |            if(s.length()==n)
      |               ~~~~~~~~~~^~~
dna.cpp: In function 'std::string analyse(int, int)':
dna.cpp:54:1: warning: control reaches end of non-void function [-Wreturn-type]
   54 | }
      | ^
grader.cpp: In function 'bool make_test(std::string)':
grader.cpp:14:20: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   14 |  for (int i = 0; i < p.size(); i++) {
      |                  ~~^~~~~~~~~~
grader.cpp:23:20: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   23 |  for (int i = 1; i <= ss.size(); i++) {
      |                  ~~^~~~~~~~~~~~
grader.cpp:28:13: warning: comparison of integer expressions of different signedness: '__gnu_cxx::__alloc_traits<std::allocator<int>, int>::value_type' {aka 'int'} and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   28 |   if (pr[i] == p.size()) {

• Subtask 1: 0 / 11
• Subtask 2: 0 / 25
• Subtask 3: 0 / 64