Submission #497989

#	Time	Username	Problem	Language	Result	Execution time	Memory
497989		IOI_champion_in_1980	콤보 (IOI18_combo)	C++14	0 / 100	1 ms	200 KiB

combo

#include<bits/stdc++.h>
using namespace std;
int a, b, c, d, e, n, m;
string s, t, st;
int press(string p);

string guess_sequence(int n) {
	st="ABXY";
	for (a=0; a<st.length(); a++)
	{
		string p="";
		p=p+st[a];
		p=p+st[a];
		if (press(p))
		{
			for (b=0; b<st.length(); b++)
			{
				if (b==a) continue;
				string h="";
				h=h+st[a];
				for (c=0; c<st.length(); c++)
				{
					if (c==a) continue;
					h=h+st[b];
					h=h+st[c];
					if (press(h)==3) return h;
				}
			}
		}
	}
}

Compilation message (stderr)

combo.cpp: In function 'std::string guess_sequence(int)':
combo.cpp:9:13: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
    9 |  for (a=0; a<st.length(); a++)
      |            ~^~~~~~~~~~~~
combo.cpp:16:15: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   16 |    for (b=0; b<st.length(); b++)
      |              ~^~~~~~~~~~~~
combo.cpp:21:16: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   21 |     for (c=0; c<st.length(); c++)
      |               ~^~~~~~~~~~~~
combo.cpp:31:1: warning: control reaches end of non-void function [-Wreturn-type]
   31 | }
      | ^

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