Submission #600577

#	Time	Username	Problem	Language	Result	Execution time	Memory
600577		enerelt14	Combo (IOI18_combo)	C++17	0 / 100	2 ms	464 KiB

combo

#include "combo.h"
#include<bits/stdc++.h>
#define pb push_back
using namespace std;
int n;
string guess_sequence(int N){
    string ans;
    n=N;
    string p;
    string x;
    for (int i=0;i<n;i++){
        if (i==0){
            p+='A';
            for (int i=1;i<4*n;i++)p+='B';
            if (press(p)>0){
                p.clear();
                for (int i=0;i<4*n;i++)p+='A';
                if (press(p)>0){
                    ans+='A';
                    x='BXY';
                }
                else{
                    ans+='B';
                    x='AXY';
                }
                p.clear();
                continue;
            }
            p.clear();
            for (int i=0;i<4*n;i++)p+='X';
            if (press(p)>0){
                ans+='X';
                x='ABY';
            }
            else{
                ans+='Y';
                x='ABX';
            }
            p.clear();
            continue;
        }
        if (i==n-1){
            p+=ans;
            for (int i=ans.size();i<4*n;i++)p+=x[0];
            if (press(p)){
                ans+=x[0];
                return ans;
            }
            p.clear();
            p+=ans;
            for (int i=ans.size();i<4*n;i++)p+=x[1];
            if (press(p)){
                ans+=x[1];
                return ans;
            }
            ans+=x[2];
            return ans;
        }
        for (int i=0;i<4;i++){
            p+=ans;
            if (i==0){
                p+=x[0];
                for (int i=ans.size()+1;i<n;i++)p+=ans[0];
                continue;
            }
            p+=x[1];
            p+=x[i-1];
            for (int i=ans.size()+2;i<n;i++)p+=ans[0];
        }
        int y=press(p);
        if (y==ans.size())ans+=x[2];
        if (y==ans.size()+1)ans+=x[0];
        if (y==ans.size()+2)ans+=x[1];
    }
}

Compilation message (stderr)

combo.cpp:20:23: warning: multi-character character constant [-Wmultichar]
   20 |                     x='BXY';
      |                       ^~~~~
combo.cpp:24:23: warning: multi-character character constant [-Wmultichar]
   24 |                     x='AXY';
      |                       ^~~~~
combo.cpp:33:19: warning: multi-character character constant [-Wmultichar]
   33 |                 x='ABY';
      |                   ^~~~~
combo.cpp:37:19: warning: multi-character character constant [-Wmultichar]
   37 |                 x='ABX';
      |                   ^~~~~
combo.cpp: In function 'std::string guess_sequence(int)':
combo.cpp:20:23: warning: overflow in conversion from 'int' to 'char' changes value from '4347993' to ''Y'' [-Woverflow]
   20 |                     x='BXY';
      |                       ^~~~~
combo.cpp:24:23: warning: overflow in conversion from 'int' to 'char' changes value from '4282457' to ''Y'' [-Woverflow]
   24 |                     x='AXY';
      |                       ^~~~~
combo.cpp:33:19: warning: overflow in conversion from 'int' to 'char' changes value from '4276825' to ''Y'' [-Woverflow]
   33 |                 x='ABY';
      |                   ^~~~~
combo.cpp:37:19: warning: overflow in conversion from 'int' to 'char' changes value from '4276824' to ''X'' [-Woverflow]
   37 |                 x='ABX';
      |                   ^~~~~
combo.cpp:71:14: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   71 |         if (y==ans.size())ans+=x[2];
      |             ~^~~~~~~~~~~~
combo.cpp:72:14: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   72 |         if (y==ans.size()+1)ans+=x[0];
      |             ~^~~~~~~~~~~~~~
combo.cpp:73:14: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   73 |         if (y==ans.size()+2)ans+=x[1];
      |             ~^~~~~~~~~~~~~~
combo.cpp:9:12: warning: control reaches end of non-void function [-Wreturn-type]
    9 |     string p;
      |            ^

• Subtask 1: 0 / 5
• Subtask 2: 0 / 95