Submission #409262

#	Time	Username	Problem	Language	Result	Execution time	Memory
409262		Urvuk3	Combo (IOI18_combo)	C++17	100 / 100	54 ms	564 KiB

combo

#include "combo.h"
#include <bits/stdc++.h>

using namespace std;

string guess_sequence(int n){
    string a="ABXY", b="AB", d, s;
    if(!press("AB")) b="XY";
    char fc=b[0];
    if(!press(b.substr(0,1))) fc=b[1];
    for(char c:a){
        if(c!=fc) d+=c;
    }
    s+=fc;
    if(n<=1) return s;
    while(s.size()<n-1)
        s+=d[press(s+d[1]+s+d[2]+d[0]+s+d[2]+d[1]+s+d[2]+d[2])-s.size()];
    if(press(s+d[0]+s+d[1])>s.size()){
       if(press(s+d[0])>s.size()) return s+d[0];
       return s+d[1];
    }
    return s+d[2];
}

Compilation message (stderr)

combo.cpp: In function 'std::string guess_sequence(int)':
combo.cpp:16:19: warning: comparison of integer expressions of different signedness: 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare]
   16 |     while(s.size()<n-1)
      |           ~~~~~~~~^~~~
combo.cpp:18:28: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   18 |     if(press(s+d[0]+s+d[1])>s.size()){
      |        ~~~~~~~~~~~~~~~~~~~~^~~~~~~~~
combo.cpp:19:24: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   19 |        if(press(s+d[0])>s.size()) return s+d[0];
      |           ~~~~~~~~~~~~~^~~~~~~~~

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