Submission #434390

#	Time	Username	Problem	Language	Result	Execution time	Memory
434390		bipartite_matching	Combo (IOI18_combo)	C++14	Compilation error	0 ms	0 KiB

combo

#include <bits/stdc++.h>

#define forint(i, N) for (int i = 0; i < (N); i++)

using namespace std;

int press(string p);

string guess_sequence(int N) {
	string ans = "";

	vector<char> v;

	if (press("AB") == 1) {
		if (press("A") == 1) {
			ans += 'A';
			v = {'B', 'X', 'Y'};
		}
		else {
			ans += 'B';
			v = {'A', 'X', 'Y'};
		}
	}
	else {
		if (press("X") == 1) {
			ans += 'X';
			v = {'A', 'B', 'Y'};
		}
		else {
			ans += 'Y';
			v = {'A', 'B', 'X'};
		}
	}

	/*if (press("A") == 1) {
		ans += 'A';
		v = {'B', 'X', 'Y'};
	}
	else if (press("B") == 1) {
		ans += 'B';
		v = {'A', 'X', 'Y'};
	}
	else if (press("X") == 1) {
		ans += 'X';
		v = {'A', 'B', 'Y'};
	}
	else {
		ans += 'Y';
		v = {'A', 'B', 'X'};
	}*/

	if (N == 1) {
		return ans;
	}

	//int pos = 1;

	for (int i = 1; i < N - 1; i++) {
		int tmp = press(ans + v[0] + ans + v[1] + v[0] + ans + v[1] + v[1] + ans + v[1] + v[2]);
		if (tmp == i + 1) {
			ans += v[0];
		}
		else if (tmp == i + 2) {
			ans += v[1];
		}
		else {
			ans += v[2];
		}
	}
	if (press(ans + v[0]) == N) {
		ans += v[0];
	}
	else if (press(ans + v[1]) == N) {
		ans += v[1];
	}
	else {
		ans += v[2];
	}
	return ans;
}


string test = "A";

int press(string p) {
	int ret = 0;

	queue<int> q;

	forint(i, p.length()) {
		if (p[i] == test[0]) {
			q.push(i);
		}
	}

	if (!q.empty()) {
		ret++;
	}
	else {
		return 0;
	}

	while (!q.empty()) {
		int a = q.size();
		forint(i, a) {
			int tmp = q.front();
			q.pop();
			if (tmp + 1 < p.length() && p[tmp + 1] == test[ret]) {
				q.push(tmp + 1);
			} 
		}
		if (!q.empty()) {
			ret++;
		}
	}

	return ret;
}

Compilation message (stderr)

combo.cpp: In function 'int press(std::string)':
combo.cpp:3:40: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
    3 | #define forint(i, N) for (int i = 0; i < (N); i++)
      |                                        ^
combo.cpp:90:2: note: in expansion of macro 'forint'
   90 |  forint(i, p.length()) {
      |  ^~~~~~
combo.cpp:108:16: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
  108 |    if (tmp + 1 < p.length() && p[tmp + 1] == test[ret]) {
      |        ~~~~~~~~^~~~~~~~~~~~
/usr/bin/ld: /tmp/cc9NbY6c.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/ccxjRHaa.o:combo.cpp:(.text+0x130): first defined here
collect2: error: ld returned 1 exit status