Submission #76338

#	Time	Username	Problem	Language	Result	Execution time	Memory
76338		darthsidious	Combo (IOI18_combo)	C++14	Compilation error	0 ms	0 KiB

combo

#include <iostream>
#include <string>
//A B X Y

using namespace std;

int press(string p)
{
	string secret = "ABXYXXYY";
	int ans = 0;
	for(int i=0;i<secret.size();i++) {
		if(secret[i] == p[i])
			ans++;
		else
			break;
	}
	return ans;
}

string guess_sequence(int N) {
	string chars = "ABXY";
	string c[3];
	int start_c = 0;
	for(int i=0;i<4;i++) {
		string tmp(1, chars[i]);
		int r = press(tmp);	
		if(r == 1) {
			start_c = i;
			break;
		}
	}

	for(int i=0;i<3;i++) {
		if(start_c <= i)
			c[i] = string(1, chars[i+1]);
		else
			c[i] = string(1, chars[i]);
	}
	// cout << (string)c << endl;	

	string ans(1, chars[start_c]);
	// cout << "Starting with " << ans << endl;
	int test_char = 0;
	for(int i=0;i<7996;i++) {
		string test = ans;
		int len = test.size();

		test = ans + c[test_char%3];
		// cout << "testing " << test << endl;
		test_char++;

		if(press(test) > len) {
			// cout << "Improved..." << endl;
			ans = test;
		}

		// cout << ans << endl;

		if(ans.size() == N)
			break;

		// if(i > N)
		// 	break;
		// while(true) { //construct test string
			// for(int j=0;j<3;j++) {
			// 	test += ans + c[j];
			// }
		// }

	}

	return ans;
}

// int main() {
// 	cout << guess_sequence(8) << endl;
// }

Compilation message (stderr)

combo.cpp: In function 'int press(std::string)':
combo.cpp:11:15: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   11 |  for(int i=0;i<secret.size();i++) {
      |              ~^~~~~~~~~~~~~~
combo.cpp: In function 'std::string guess_sequence(int)':
combo.cpp:59:17: warning: comparison of integer expressions of different signedness: 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare]
   59 |   if(ans.size() == N)
      |      ~~~~~~~~~~~^~~~
/usr/bin/ld: /tmp/ccDYCnte.o: in function `press(std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >)':
grader.cpp:(.text+0x0): multiple definition of `press(std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >)'; /tmp/ccmCtL5g.o:combo.cpp:(.text+0x180): first defined here
collect2: error: ld returned 1 exit status