Submission #207712

#	Time	Username	Problem	Language	Result	Execution time	Memory
207712		Sho10	Combo (IOI18_combo)	C++14	100 / 100	41 ms	660 KiB

combo

/*
ID: Sho10
LANG: C++
*/
#include <bits/stdc++.h> //Andrei Alexandru a.k.a Sho10
#include <combo.h>
#define ll long long int
#pragma GCC optimize("O3")
#pragma GCC optimize("Ofast")
#define all(a) (a).begin(), (a).end()
#define sz size
#define f first
#define s second
#define pb push_back
#define er erase
#define in insert
#define mp make_pair
#define pi pair
#define rc(s) return cout<<s,0
#define endl '\n'
#define mod 1000000007
#define PI 3.14159265359
#define CODE_START  ios_base::sync_with_stdio(false);cin.tie(0);cout.tie(0);
using namespace std;
/*
ll n=5;
string S="ABXYY";
int press(std::string p) {
  int coins = 0;
  for (int i = 0, j = 0; i < n; ++i) {
    if (j < n && S[j] == p[i]) {
      ++j;
    } else if (S[0] == p[i]) {
      j = 1;
    } else {
      j = 0;
    }
    coins = std::max(coins, j);
  }
  return coins;
}
*/
string guess_sequence(int N){
ll n=N;
string s="",ver="",x="";
ll a;
a=press("AB");
if(a==2){
    s=s+'A';
    x=x+'A';
    ver=ver+'B';
    ver=ver+'X';
    ver=ver+'Y';
}else if(a==1){
    a=press("A");
    if(a==1){
      s=s+'A';
    x=x+'A';
    ver=ver+'B';
    ver=ver+'X';
    ver=ver+'Y';   
    }else{
      s=s+'B';
    x=x+'B';
    ver=ver+'A';
    ver=ver+'X';
    ver=ver+'Y';   
    }
}else {
    a=press("X");
    if(a==1){
         s=s+'X';
    x=x+'X';
    ver=ver+'A';
    ver=ver+'B';
    ver=ver+'Y';
    }else {
         s=s+'Y';
    x=x+'Y';
    ver=ver+'A';
    ver=ver+'B';
    ver=ver+'X';
    }
}
for(ll i=1;i<n;i++)
{
     a=-1;
      if(i==n-1){
          if(s[0]=='A'){
              a=-1;
          }else {
            a=press((x+"A"));
          }
    if(a==n){
        s=s+'A';
    }else {
        if(s[0]=='B'){
            a=-1;
        }else {
    a=press((x+"B"));
        }
    if(a==n){
        s=s+'B';
    }else {
        if(s[0]=='X'){
            s=s+'Y';
        }else if(s[0]=='Y'){
            s=s+'X';
        }else {
    a=press((x+"X"));
    if(a==n){
    s=s+'X';
    }else {
    s=s+'Y';
    }
    }
    }
    }
    }else {
     a=press((x+ver[0]+x+ver[1]+ver[0]+x+ver[1]+ver[1]+x+ver[1]+ver[2]));
     if(a==x.size()){
        s=s+ver[2];
        x=x+ver[2];
     }else if(a==x.size()+1){
     s=s+ver[0];
     x=x+ver[0];
     }else {
     s=s+ver[1];
     x=x+ver[1];
     }
}
}
return s;
}
/*
int32_t main(){
CODE_START;
cout<<guess_sequence(5)<<endl;
}
*/

Compilation message (stderr)

combo.cpp: In function 'std::string guess_sequence(int)':
combo.cpp:121:10: warning: comparison of integer expressions of different signedness: 'long long int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
  121 |      if(a==x.size()){
      |         ~^~~~~~~~~~
combo.cpp:124:16: warning: comparison of integer expressions of different signedness: 'long long int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
  124 |      }else if(a==x.size()+1){
      |               ~^~~~~~~~~~~~

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