Submission #372760

#	Time	Username	Problem	Language	Result	Execution time	Memory
372760		Carmel_Ab1	Combo (IOI18_combo)	C++17	0 / 100	52 ms	308 KiB

combo

#include <bits/stdc++.h>
#include "combo.h"
//#include "grader.cpp"
using namespace std;
string guess_sequence(int n) {
    string ans;
    for(int rep=0; rep<2; rep++)
        for(char c:"ABXY")
            if(press(ans+c)==ans.size()+1){
                ans+=c;
                break;
            }
    while(ans.size()!=n){
        set<char>s;
        for(char c:"ABXY")s.insert(c);
        s.erase(ans[0]);
        s.erase(ans.back());
        char c1=*s.begin();
        s.erase(c1);
        char c2=*s.begin();

        string guess=ans+c1;
        for(char p1:{c1,c2,ans.back()})
            guess+=ans+c2+p1;
        if(guess.size()<4*n) {
            if (press(guess) == ans.size() + 1)
                ans += c1;
            else
                ans += c2;
        }
        else {
            if(press(ans+c1)==ans.size()+1)
                ans+=c1;
            else
                ans+=c2;
        }
    }
    return ans;
}

Compilation message (stderr)

combo.cpp: In function 'std::string guess_sequence(int)':
combo.cpp:9:28: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
    9 |             if(press(ans+c)==ans.size()+1){
      |                ~~~~~~~~~~~~^~~~~~~~~~~~~~
combo.cpp:13:21: warning: comparison of integer expressions of different signedness: 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare]
   13 |     while(ans.size()!=n){
      |           ~~~~~~~~~~^~~
combo.cpp:25:24: warning: comparison of integer expressions of different signedness: 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare]
   25 |         if(guess.size()<4*n) {
      |            ~~~~~~~~~~~~^~~~
combo.cpp:26:30: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   26 |             if (press(guess) == ans.size() + 1)
      |                 ~~~~~~~~~~~~~^~~~~~~~~~~~~~~~~
combo.cpp:32:29: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   32 |             if(press(ans+c1)==ans.size()+1)
      |                ~~~~~~~~~~~~~^~~~~~~~~~~~~~

• Subtask 1: 0 / 5
• Subtask 2: 0 / 95