Submission #498102

#	Time	Username	Problem	Language	Result	Execution time	Memory
498102		IOI_champion_in_1980	Combo (IOI18_combo)	C++14	0 / 100	2 ms	456 KiB

combo

#include<bits/stdc++.h>
using namespace std;
int press(std::string p);
string guess_sequence(int n) {
//int main() {
	string sss="ABXY";
	string yok, p;
	for (long long a=0; a<3; a++)
	{
		string k;
		k=k+sss[a];
		if (press(k)==1)
		{
			p=p+sss[a];
			break;
		}
		else
		{
			yok=yok+sss[a];
		}
	}
	if (p.length()==0) p=p+sss[3]; else yok=yok+sss[3];
	for (long long a=2; a<=n-1; a++)
	{
		string st=p+yok[0]+yok[0]+p+yok[0]+yok[1]+p+yok[0]+yok[2]+p+yok[1];
		long long k=press(st);
		if (k==2) p=p+yok[0];
			else if (k==1) p=p+yok[1];
				else p=p+yok[2];
	
	}
	for (long long a=0; a<yok.length(); a++)
	{
		string st=p;
		st=st+yok[a];
		if (press(st)==n)
		{
			return p;
//			cout<<p<<endl;
//			break;
		}
	}
//	return p;
}

Compilation message (stderr)

combo.cpp: In function 'std::string guess_sequence(int)':
combo.cpp:32:23: 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]
   32 |  for (long long a=0; a<yok.length(); a++)
      |                      ~^~~~~~~~~~~~~
combo.cpp:6:13: warning: control reaches end of non-void function [-Wreturn-type]
    6 |  string sss="ABXY";
      |             ^~~~~~

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