Submission #529377

#	Time	Username	Problem	Language	Result	Execution time	Memory
529377		__Variatto	Combo (IOI18_combo)	C++17	100 / 100	35 ms	600 KiB

combo

#include <bits/stdc++.h>
#include "combo.h"
using namespace std;
#define pb push_back
#define fi first
#define se second
#define ll long long
/*int press(string p){
    cout<<p<<"\n";
    int x;
    cin>>x;
    return x;
}*/
//1-A, 2-B, 3-X, 4-Y
string guess_sequence(int n){
    string s;
    if(press("AB")){
        if(press("A")) s="A";
        else s="B";
    }
    else{
        if(press("X")) s="X";
        else s="Y";
    }
    if(n==2){
        if(s!="A" && press(s+"A")==2)
            s+='A';
        else if(s!="B" && press(s+"B")==2)
            s+='B';
        else if(s=="Y" || (s!="X" && press(s+"X")==2))
            s+='X';
        else 
            s+='Y';
        return s;
    }
    for(int i=1; i<=n-1; i++){
        if(s[0]=='A'){
            string pyt=s+"B"+s+"XB"+s+"XX"+s+"XY";
            if(i==n-1)
                pyt=s+"XB"+s+"XX"+s+"XY";
            int a=press(pyt);
            if(a==s.size()+2 || (i==n-1 && a==s.size()+1))
                s+='X';
            else if(a==s.size()+1 || (i==n-1 && a==s.size() && press(s+"B")==s.size()+1))
                s+='B';
            else
                s+='Y';
        }
        if(s[0]=='B'){
            //cout<<"XD";
            string pyt=s+"A"+s+"XA"+s+"XX"+s+"XY";
            if(i==n-1)
                pyt=s+"XA"+s+"XX"+s+"XY";
            int a=press(pyt);
            if(a==s.size()+2 || (i==n-1 && a==s.size()+1))
                s+='X';
            else if(a==s.size()+1 || (i==n-1 && a==s.size() && press(s+"A")==s.size()+1))
                s+='A';
            else
                s+='Y';
        }
        if(s[0]=='X'){
            string pyt=s+"A"+s+"BA"+s+"BB"+s+"BY";
            if(i==n-1)
                pyt=s+"BA"+s+"BB"+s+"BY";
            int a=press(pyt);
            if(a==s.size()+2 || (i==n-1 && a==s.size()+1))
                s+='B';
            else if(a==s.size()+1 || (i==n-1 && a==s.size() && press(s+"A")==s.size()+1))
                s+='A';
            else
                s+='Y';
        }
        if(s[0]=='Y'){
            string pyt=s+"A"+s+"XA"+s+"XB"+s+"XX";
            if(i==n-1)
                pyt=s+"XA"+s+"XB"+s+"XX";
            int a=press(pyt);
            if(a==s.size()+2 || (i==n-1 && a==s.size()+1))
                s+='X';
            else if(a==s.size()+1 || (i==n-1 && a==s.size() && press(s+"A")==s.size()+1))
                s+='A';
            else
                s+='B';
        }
    }
    return s;
}
/*int main(){
    ios_base::sync_with_stdio(false);
    cin.tie(0), cout.tie(0);
    int x;
    cin>>x;
    cout<<guess_sequence(x)<<"\n";;
}
*/

Compilation message (stderr)

combo.cpp: In function 'std::string guess_sequence(int)':
combo.cpp:42:17: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   42 |             if(a==s.size()+2 || (i==n-1 && a==s.size()+1))
      |                ~^~~~~~~~~~~~
combo.cpp:42:45: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   42 |             if(a==s.size()+2 || (i==n-1 && a==s.size()+1))
      |                                            ~^~~~~~~~~~~~
combo.cpp:44:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   44 |             else if(a==s.size()+1 || (i==n-1 && a==s.size() && press(s+"B")==s.size()+1))
      |                     ~^~~~~~~~~~~~
combo.cpp:44:50: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   44 |             else if(a==s.size()+1 || (i==n-1 && a==s.size() && press(s+"B")==s.size()+1))
      |                                                 ~^~~~~~~~~~
combo.cpp:44:76: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   44 |             else if(a==s.size()+1 || (i==n-1 && a==s.size() && press(s+"B")==s.size()+1))
      |                                                                ~~~~~~~~~~~~^~~~~~~~~~~~
combo.cpp:55:17: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   55 |             if(a==s.size()+2 || (i==n-1 && a==s.size()+1))
      |                ~^~~~~~~~~~~~
combo.cpp:55:45: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   55 |             if(a==s.size()+2 || (i==n-1 && a==s.size()+1))
      |                                            ~^~~~~~~~~~~~
combo.cpp:57:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   57 |             else if(a==s.size()+1 || (i==n-1 && a==s.size() && press(s+"A")==s.size()+1))
      |                     ~^~~~~~~~~~~~
combo.cpp:57:50: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   57 |             else if(a==s.size()+1 || (i==n-1 && a==s.size() && press(s+"A")==s.size()+1))
      |                                                 ~^~~~~~~~~~
combo.cpp:57:76: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   57 |             else if(a==s.size()+1 || (i==n-1 && a==s.size() && press(s+"A")==s.size()+1))
      |                                                                ~~~~~~~~~~~~^~~~~~~~~~~~
combo.cpp:67:17: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   67 |             if(a==s.size()+2 || (i==n-1 && a==s.size()+1))
      |                ~^~~~~~~~~~~~
combo.cpp:67:45: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   67 |             if(a==s.size()+2 || (i==n-1 && a==s.size()+1))
      |                                            ~^~~~~~~~~~~~
combo.cpp:69:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   69 |             else if(a==s.size()+1 || (i==n-1 && a==s.size() && press(s+"A")==s.size()+1))
      |                     ~^~~~~~~~~~~~
combo.cpp:69:50: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   69 |             else if(a==s.size()+1 || (i==n-1 && a==s.size() && press(s+"A")==s.size()+1))
      |                                                 ~^~~~~~~~~~
combo.cpp:69:76: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   69 |             else if(a==s.size()+1 || (i==n-1 && a==s.size() && press(s+"A")==s.size()+1))
      |                                                                ~~~~~~~~~~~~^~~~~~~~~~~~
combo.cpp:79:17: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   79 |             if(a==s.size()+2 || (i==n-1 && a==s.size()+1))
      |                ~^~~~~~~~~~~~
combo.cpp:79:45: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   79 |             if(a==s.size()+2 || (i==n-1 && a==s.size()+1))
      |                                            ~^~~~~~~~~~~~
combo.cpp:81:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   81 |             else if(a==s.size()+1 || (i==n-1 && a==s.size() && press(s+"A")==s.size()+1))
      |                     ~^~~~~~~~~~~~
combo.cpp:81:50: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   81 |             else if(a==s.size()+1 || (i==n-1 && a==s.size() && press(s+"A")==s.size()+1))
      |                                                 ~^~~~~~~~~~
combo.cpp:81:76: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   81 |             else if(a==s.size()+1 || (i==n-1 && a==s.size() && press(s+"A")==s.size()+1))
      |                                                                ~~~~~~~~~~~~^~~~~~~~~~~~

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