Submission #1061625

#	Time	Username	Problem	Language	Result	Execution time	Memory
1061625		Petrix	Combo (IOI18_combo)	C++17	100 / 100	23 ms	1744 KiB

combo

#include "combo.h"
#include<string>
#include<vector>
using namespace std;

string guess_sequence(int n){
    vector<char> v;
    int i,aux1;
    string s,aux;
    if(press("AB")){
        if(press("A")) s='A';
        else s='B';
    }else{
        if(press("X")) s='X';
        else s='Y';
    }
    if(n==1) return s;
    if(s[0]!='X') v.push_back('X');
    if(s[0]!='Y') v.push_back('Y');
    if(s[0]!='A') v.push_back('A');
    if(s[0]!='B') v.push_back('B');
    for(i=2;i<=n-1;i++){
        aux=s+v[0]+s+v[1]+v[0]+s+v[1]+v[1]+s+v[1]+v[2];
        aux1=press(aux);
        if(aux1==i-1) s+=v[2];
        else if(aux1==i) s+=v[0];
        else s+=v[1];
    }
    if(press(s+v[0])==s.size()+1) s+=v[0];
    else if(press(s+v[1])==s.size()+1) s+=v[1];
    else s+=v[2];
    return s;
}

Compilation message (stderr)

combo.cpp: In function 'std::string guess_sequence(int)':
combo.cpp:29:21: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   29 |     if(press(s+v[0])==s.size()+1) s+=v[0];
      |        ~~~~~~~~~~~~~^~~~~~~~~~~~
combo.cpp:30:26: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   30 |     else if(press(s+v[1])==s.size()+1) s+=v[1];
      |             ~~~~~~~~~~~~~^~~~~~~~~~~~

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