Submission #1180373

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Source Code Expand

#include<iostream>
#include<queue>
#include<string>
using namespace std;

int main() {
	string sa, sb, sc;
	queue<char>qa, qb, qc;
	cin >> sa >> sb >> sc;
	for (int i = 0; i < sa.size(); i++) qa.push(sa[i]);
	for (int i = 0; i < sb.size(); i++)qb.push(sb[i]);
	for (int i = 0; i < sc.size(); i++)qc.push(sc[i]);

	char now = 'a';
	while (1) {
		if (now == 'a') {
			if (qa.empty())break;
			now = qa.front();
			qa.pop();
		}
		else if (now == 'b') {
			if (qb.empty())break;
			now = qb.front();
			qb.pop();
		}
		else {
			if (qc.empty())break;
			now = qc.front();
			qc.pop();
		}
	}
	now -= 32;
	cout << now << endl;
	return 0;
}

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