Submission #432433

#	Time	Username	Problem	Language	Result	Execution time	Memory
432433		juggernaut	Martian DNA (IOI16_dna)	C++17	36 / 100	30 ms	460 KiB

dna

#include"dna.h"
#include<bits/stdc++.h>
#ifndef EVAL
#include"grader.cpp"
#endif
using namespace std;
string analyse(int n,int t){
    if(!make_test("0"))return string(n,'1');
    string s="0";
    vector<int>v={0,1,2,4};
    srand(time(NULL));
    while(--n){
        random_shuffle(v.begin(),v.begin()+3);
        for(int to:v){
            if(to==0){
                string ss=s;
                ss+="0";
                if(make_test(ss)){
                    s=ss;
                    break;
                }
            }else if(to==1){
                string ss=s;
                ss+="1";
                if(make_test(ss)){
                    s=ss;
                    break;
                }
            }else if(to==2){
                string ss=s;
                ss="0"+ss;
                if(make_test(ss)){
                    s=ss;
                    break;
                }
            }else{
                string ss=s;
                ss="1"+ss;
                s=ss;
                break;
            }
        }
    }
    return s;
}

Compilation message (stderr)

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: 0 / 64