Submission #732202

#	Time	Username	Problem	Language	Result	Execution time	Memory
732202		bane	Combo (IOI18_combo)	C++17	10 / 100	81 ms	440 KiB

combo

#include<bits/stdc++.h>
using namespace std;
int press(std::string p);

string guess_sequence(int N){
	string ans = "";
	int old = 0;
	vector<string>choices = {"A", "B", "X", "Y"};
	for (int i = 0;  i < N; i++){
		for (int j = 0; j < 4; j++){
			if (press(ans + choices[j]) > old){
				ans += choices[j];
				++old;
				break;
			}
		}
	}
	assert(ans.size() == N);
	return ans;
}

Compilation message (stderr)

In file included from /usr/include/c++/10/cassert:44,
                 from /usr/include/x86_64-linux-gnu/c++/10/bits/stdc++.h:33,
                 from combo.cpp:1:
combo.cpp: In function 'std::string guess_sequence(int)':
combo.cpp:18:20: warning: comparison of integer expressions of different signedness: 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare]
   18 |  assert(ans.size() == N);
      |         ~~~~~~~~~~~^~~~

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