Submission #3134008

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Source Code Expand

#include <iostream>
#include <string>

using namespace std;

int main()
{
	int n;
	string s;
	string t = "b";

	cin >> n >> s;

	if (s == "b") {
		cout << 0 << endl;
		return 0;
	}

	for (int i = 1; i <= n; i++)
	{
		if (i == 1 || i % 3 == 1) {
			t.insert(t.begin(), 'a');
			t.push_back('c');
		}
		else if(i == 2 || i % 3 == 2) {
			t.insert(t.begin(), 'c');
			t.push_back('a');
		}
		else if (i % 3 == 0) {
			t.insert(t.begin(), 'b');
			t.push_back('b');
		}

		if (t == s) {
			cout << i << endl;
			return 0;
		}
	}

	cout << -1 << endl;
	return 0;
}

Submission Info

Judge Result