Submission #571982

#	Time	Username	Problem	Language	Result	Execution time	Memory
571982		OrazB	Combo (IOI18_combo)	C++14	100 / 100	38 ms	572 KiB

combo

#include "combo.h"
#include <bits/stdc++.h>
#define wr cout << "Continue debugging\n";
#define ll long long int
#define pii pair <int, int>
#define pb push_back
#define ff first
#define ss second
using namespace std;

vector <char> v; 
string s;

string guess_sequence(int N){
	int a = press("AB");
	string t = "ABXY";
	if (a == 2) s += 'A';
	else if (a){
		if (press("A")) s += 'A';
		else s += 'B';
	}else{
		if (press("X")) s += 'X';
		else s += 'Y';
	}
	string c = "";
	for (int i = 0; i < 4; i++) if (t[i] != s[0]) v.pb(t[i]);
	for (int i = 1; i < N-1; i++){
		c.clear();
		c += s + v[0] + v[0];
		c += s + v[0] + v[1];
		c += s + v[0] + v[2];
		c += s + v[1];
		int x = press(c);
		if (x == s.size() + 2) s += v[0];
		else if (x == s.size() + 1) s += v[1];
		else s += v[2];
	}
	if (N > 1){
		if (press (s + v[0]) == s.size() + 1) s += v[0];
		else if (press (s + v[1]) == s.size() + 1) s += v[1];
		else s += v[2];
	}
	return s;
}

Compilation message (stderr)

combo.cpp: In function 'std::string guess_sequence(int)':
combo.cpp:34:9: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   34 |   if (x == s.size() + 2) s += v[0];
      |       ~~^~~~~~~~~~~~~~~
combo.cpp:35:14: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   35 |   else if (x == s.size() + 1) s += v[1];
      |            ~~^~~~~~~~~~~~~~~
combo.cpp:39:24: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   39 |   if (press (s + v[0]) == s.size() + 1) s += v[0];
      |       ~~~~~~~~~~~~~~~~~^~~~~~~~~~~~~~~
combo.cpp:40:29: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   40 |   else if (press (s + v[1]) == s.size() + 1) s += v[1];
      |            ~~~~~~~~~~~~~~~~~^~~~~~~~~~~~~~~

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