Submission #751796

#	Time	Username	Problem	Language	Result	Execution time	Memory
751796		kusmetliq	Combo (IOI18_combo)	C++14	30 / 100	55 ms	444 KiB

combo

#include "combo.h"
#include<bits/stdc++.h>
using namespace std;
string guess_sequence(int n) {
    string ans="";
    string av="ABXY";
    char special;
    if(press("A")==1)special='A';
    else if(press("B")==1)special='B';
    else if(press("X")==1)special='X';
    else special='Y';
    ans+=special;
    av.erase(find(av.begin(),av.end(),special));
    for(int i=1;i<n;i++) {
        for(int j=0;j<av.size();j++) {
            if(j==av.size()-1)ans+=av[j];
            else {
                ans+=av[j];
                if(press(ans)==ans.size()){break;}
                else ans.pop_back();
            }
        }
    }
    return ans;
}

Compilation message (stderr)

combo.cpp: In function 'std::string guess_sequence(int)':
combo.cpp:15:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   15 |         for(int j=0;j<av.size();j++) {
      |                     ~^~~~~~~~~~
combo.cpp:16:17: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   16 |             if(j==av.size()-1)ans+=av[j];
      |                ~^~~~~~~~~~~~~
combo.cpp:19:30: 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(ans)==ans.size()){break;}
      |                    ~~~~~~~~~~^~~~~~~~~~~~

• Subtask 1: 5 / 5
• Subtask 2: 25 / 95