Submission #307531

#	Time	Username	Problem	Language	Result	Execution time	Memory
307531		JovanK26	Martian DNA (IOI16_dna)	C++14	100 / 100	14 ms	384 KiB

dna

#include<bits/stdc++.h>
#include "dna.h"
using namespace std;

string analyse(int n,int t)
{
   if(!make_test("1"))return string(n,'0');
   int l=1;
   int r=n;
   int m;
   while(l<=r)
   {
      m=(l+r)/2;
      if(make_test(string(m,'1')))
      {
          l=m+1;
      }
      else
      {
          r=m-1;
      }
   }
   string rez=string(l-1,'1');
   int br=0;
   while(rez.size()<n)
   {
       if(make_test(rez+"0"))
       {
           br=0;
           rez+="0";
       }
       else
       {
           rez+="1";
           br++;
       }
       if(br>l-1)break;
   }
   l=1;
   r=n;
   while(l<=r)
   {
      m=(l+r)/2;
      if(make_test(rez.substr(0,m)))
      {
          l=m+1;
      }
      else
      {
          r=m-1;
      }
   }
   rez=rez.substr(0,l-1);
   while(rez.size()<n)
   {
       if(make_test("0"+rez))
       {
           rez="0"+rez;
       }
       else
       {
           rez="1"+rez;
       }
   }
   return rez;
}

Compilation message (stderr)

dna.cpp: In function 'std::string analyse(int, int)':
dna.cpp:25:20: warning: comparison of integer expressions of different signedness: 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare]
   25 |    while(rez.size()<n)
      |          ~~~~~~~~~~^~
dna.cpp:54:20: warning: comparison of integer expressions of different signedness: 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare]
   54 |    while(rez.size()<n)
      |          ~~~~~~~~~~^~
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: 11 / 11
• Subtask 2: 25 / 25
• Subtask 3: 64 / 64