Submission #683886

#	Time	Username	Problem	Language	Result	Execution time	Memory
683886		thegamercoder19	Combo (IOI18_combo)	C++14	97 / 100	34 ms	588 KiB

combo

#include "combo.h"

#define _CRT_SECURE_NO_WARNINGS
#include <bits/stdc++.h>

#define M_PI       3.14159265358979323846
#define FILER 0
using ll = long long;
using ull = unsigned long long;
using ld = long double;
const ll MOD = pow(10, 9) + 7;
const ll INFL = 0x3f3f3f3f3f3f3f3f;
const ull INFUL = 0x3f3f3f3f3f3f3f3f;
const ll INFT = 0x3f3f3f3f;
const ull MAX = 1LL << 24;
const ll MODD = 998244353;
const double EPS = 1e-10;
#define V vector
#define pll pair<ll, ll>
#define pull2 pair<ull,ull>
#define MS multiset
#define M map
#define Q queue
#define PQ priority_queue
#define IOF ios_base::sync_with_stdio(false); cin.tie(NULL); cout.tie(NULL);
#define FOR(typ,i,a,b,c) for(typ i = a; i < b; i += c)
#define FORR(typ,i,a,b,c) for(typ i = a; i > b; i -= c)
#define FORA(a,i) for(auto &i : a)
#define all(v) v.begin(),v.end()
#define sz(v) v.size()
#define sorta(a) sort(all(a))
#define sortd(a) sort(all(a), greater<ll>())
#define setp(x) setprecision(x)<<fixed
#define RET return
#define log(a,b) log(b)/log(a)
#define WH(s) while(s)
#define WHI(t) WH(t--)
#define YES cout<<"YES"<<endl;
#define NO cout<<"NO"<<endl;
#define Yes cout<<"Yes"<<endl;
#define No cout<<"No"<<endl;
#define YESNO(s) cout << (s ? "YES" : "NO") << endl;
#define YesNo(s) cout<<(s?"Yes":"No")<<endl;
#define TYP 0
using namespace std;
std::string guess_sequence(int n) {
    ll pres = 0;
    string a = "";
    string s = "ABXY";

    FOR(ll, i, 0, 3, 1)
    {

        if (press(a + s[i]) == 1) {
          
            a.push_back(s[i]);
            s.erase(s.begin() + i);
            break;
        }
    }
    if (!a.size()) a += 'Y', s.erase(prev(s.end()));
    
    FOR(ll, j, 1, n-1, 1)
    {

        pres = press(a + s[0] + a + s[1] + s[0] + a + s[1] + s[1] + a + s[1] + s[2]);
        if (pres == a.size()+1)a += s[0];
        else if (pres == a.size() + 2)a += s[1];
        else a += s[2];
    }
    if (n > 1)
    {
        if (press(a + s[0]) == a.size() + 1)a += s[0];
        else if (press(a + s[1]) == a.size() + 1)a += s[1];
        else a += s[2];
    }
 


     return a;
}

Compilation message (stderr)

combo.cpp: In function 'std::string guess_sequence(int)':
combo.cpp:67:18: warning: comparison of integer expressions of different signedness: 'll' {aka 'long long int'} and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   67 |         if (pres == a.size()+1)a += s[0];
      |             ~~~~~^~~~~~~~~~~~~
combo.cpp:68:23: warning: comparison of integer expressions of different signedness: 'll' {aka 'long long int'} and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   68 |         else if (pres == a.size() + 2)a += s[1];
      |                  ~~~~~^~~~~~~~~~~~~~~
combo.cpp:73:29: 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 (press(a + s[0]) == a.size() + 1)a += s[0];
      |             ~~~~~~~~~~~~~~~~^~~~~~~~~~~~~~~
combo.cpp:74:34: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   74 |         else if (press(a + s[1]) == a.size() + 1)a += s[1];
      |                  ~~~~~~~~~~~~~~~~^~~~~~~~~~~~~~~

• Subtask 1: 5 / 5
• Subtask 2: 92 / 95