Submission #1007221

#	Time	Username	Problem	Language	Result	Execution time	Memory
1007221		makanhulia	Combo (IOI18_combo)	C++17	Compilation error	0 ms	0 KiB

combo

#include <bits/stdc++.h>
#include "combo.h"
using namespace std;

string guess_sequence(int n){
  string s="";
  int tmp=press("AB");
  if(tmp>=1){
    tmp=press('A');
    if(tmp==1) s+='A';
    else s+='B';
  } else {
    tmp=press('X');
    if(tmp==1) s+='X';
    else s+='Y';
  }
  while(s.length()<n-1){
    if(s[0]=='A'){
      tmp=press(s+'B'+s+"XX"+s+"XY"+s+"XB");
      if(tmp==s.length()+1){
        s+='B';
      } else if(tmp==s.length()+2){
        s+='X';
      } else {
        s+='Y';
      }
    }
    if(s[0]=='B'){
      tmp=press(s+'A'+s+"XX"+s+"XY"+s+"XA");
      if(tmp==s.length()+1){
        s+='A';
      } else if(tmp==s.length()+2){
        s+='X';
      } else {
        s+='Y';
      }
    }
    if(s[0]=='X'){
      tmp=press(s+'B'+s+"AA"+s+"AY"+s+"AB");
      if(tmp==s.length()+1){
        s+='B';
      } else if(tmp==s.length()+2){
        s+='A';
      } else {
        s+='B';
      }
    }
    if(s[0]=='Y'){
      tmp=press(s+'B'+s+"AA"+s+"AX"+s+"AB");
      if(tmp==s.length()+1){
        s+='B';
      } else if(tmp==s.length()+2){
        s+='A';
      } else {
        s+='X';
      }
    }
  }
  if(n>=2){
    tmp=press(s+"A"+s+"B");
    if(tmp>=n){
      tmp=press(s+"A");
      if(tmp==n) s+="A";
      else s+="B";
    } else {
      tmp=press(s+"X");
      if(tmp==n) s+="X";
      else s+="Y";
    }
  }
  return s;
}

Compilation message (stderr)

combo.cpp: In function 'std::string guess_sequence(int)':
combo.cpp:9:15: error: could not convert ''A'' from 'char' to 'std::string' {aka 'std::__cxx11::basic_string<char>'}
    9 |     tmp=press('A');
      |               ^~~
      |               |
      |               char
combo.cpp:13:15: error: could not convert ''X'' from 'char' to 'std::string' {aka 'std::__cxx11::basic_string<char>'}
   13 |     tmp=press('X');
      |               ^~~
      |               |
      |               char
combo.cpp:17:19: warning: comparison of integer expressions of different signedness: 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare]
   17 |   while(s.length()<n-1){
      |         ~~~~~~~~~~^~~~
combo.cpp:20:13: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   20 |       if(tmp==s.length()+1){
      |          ~~~^~~~~~~~~~~~~~
combo.cpp:22:20: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   22 |       } else if(tmp==s.length()+2){
      |                 ~~~^~~~~~~~~~~~~~
combo.cpp:30:13: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   30 |       if(tmp==s.length()+1){
      |          ~~~^~~~~~~~~~~~~~
combo.cpp:32:20: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   32 |       } else if(tmp==s.length()+2){
      |                 ~~~^~~~~~~~~~~~~~
combo.cpp:40:13: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   40 |       if(tmp==s.length()+1){
      |          ~~~^~~~~~~~~~~~~~
combo.cpp:42:20: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   42 |       } else if(tmp==s.length()+2){
      |                 ~~~^~~~~~~~~~~~~~
combo.cpp:50:13: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   50 |       if(tmp==s.length()+1){
      |          ~~~^~~~~~~~~~~~~~
combo.cpp:52:20: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   52 |       } else if(tmp==s.length()+2){
      |                 ~~~^~~~~~~~~~~~~~