Submission #794827

#	Time	Username	Problem	Language	Result	Execution time	Memory
794827		bane	Martian DNA (IOI16_dna)	C++17	36 / 100	10 ms	484 KiB

dna

    #include <bits/stdc++.h>
    #include "dna.h"
    using namespace std;
     
     
    string analyse(int n, int t) {
     
        int oi = 0, io = 0, ii = 0, oo = 0;
        if (n == 1){
            if (make_test("1"))return "1";
            else return "0";
        }
        oi = make_test("01");
        io = make_test("10");
        ii = make_test("11");
        oo = make_test("00");
        string ans = "";

        map<string,int>flag;
        if (oi)flag["01"] = 1;
        if (io)flag["10"] = 1;
        if (ii)flag["11"] = 1;
        if (oo)flag["00"] = 1;

        if (oi){
            ans += "01";
        }else if(ii){
            ans += "11";
        }
        else if(oo){
            ans +="00";
        }
        else{
             ans += "10";
        }
        t-=4;
        while(t > 0 && (int)ans.size() < n){
            string ask1,ask2,ask3,ask4;
            //cout << ans << endl;
            if (ans.size() + 2 <= n){
                if(oi)ask1 = ans + "01";
                else ask1 = "4";
     
                if(io)ask2 = ans +  "10";
                else ask2 = "4";
                
                if(ii)ask3 = ans +  "11";
                else ask3 = "4";
                
                if(oo)ask4 = ans +  "00";
                else ask4 = "4";
                
                if (ask1 != "4" && flag[ask1.substr((int)ask1.size()-3,2)]){
                    --t;
                    if (make_test(ask1)){
                        ans = ask1;
                        continue;
                    }
                }
     
                if (ask2 != "4" && flag[ask2.substr((int)ask2.size()-3,2)]){
                    --t;
                    if (make_test(ask2)){
                        ans = ask2;
                        continue;
                    }
                }
     
                if (ask3 != "4" && flag[ask3.substr((int)ask3.size()-3,2)]){
                    --t;
                    if (make_test(ask3)){
                        ans = ask3;
                        continue;
                    }
                }
     
                if (ask4 != "4" && flag[ask4.substr((int)ask4.size()-3,2)]){
                    --t;
                    if (make_test(ask4)){
                        ans = ask4;
                        continue;
                    }
                }
            }
            //one element to the right
           // cout << "ttt";
            --t;
            if (make_test(ans + '1')){
                ans += '1';
                break;
            }else if (make_test(ans + '0')){
                ans += '0';
            }
            --t;
            break;
        }
        while(t > 0 && (int)ans.size() < n){
         //   cout << t << endl;
            string ask1,ask2,ask3,ask4;
          //  cout << ans << endl;
            if (ans.size() + 2 <= n){
                if(oi)ask1 = "01" + ans;
                else ask1 = "4";
     
                if(io)ask2 = "10" + ans;
                else ask2 = "4";
                
                if(ii)ask3 = "11" + ans;
                else ask3 = "4";
                
                if(oo)ask4 = "00" + ans;
                else ask4 = "4";
                
                if (ask1 != "4" && flag[ask1.substr(1,2)]){--t;
                    if (make_test(ask1)){
                        ans = ask1;
                        
                        continue;
                    }
                }
     
                if (ask2 != "4" && flag[ask2.substr(1,2)]){--t;
                    if (make_test(ask2)){
                        ans = ask2;
                        
                        continue;
                    }
                }
     
                if (ask3 != "4" && flag[ask3.substr(1,2)]){--t;
                    if (make_test(ask3)){
                        ans = ask3;
                        
                        continue;
                    }
                }
     
                if (ask4 != "4" && flag[ask4.substr(1,2)]){--t;
                    if (make_test(ask4)){
                        ans = ask4;
                        
                        continue;
                    }
                }
            }
            //one element to the right
            --t;
            if (make_test('1' + ans)){
                ans = '1' + ans;
            }else{
                ans = '0' + ans;
            }
            break;
        }
        return ans;
    }                       

Compilation message (stderr)

dna.cpp: In function 'std::string analyse(int, int)':
dna.cpp:40:32: warning: comparison of integer expressions of different signedness: 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare]
   40 |             if (ans.size() + 2 <= n){
      |                 ~~~~~~~~~~~~~~~^~~~
dna.cpp:101:32: warning: comparison of integer expressions of different signedness: 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare]
  101 |             if (ans.size() + 2 <= 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: 0 / 64