Submission #1381485

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Source Code Expand

#include<iostream>
#include <string>
#include <iomanip>
#include <vector>
#include <queue>
#include <math.h>
#include <algorithm>
#include <functional>
#include <set> 
#include <map> 

using namespace std;
#define int long long
#define FOR(i,a,b) for(int i=(a);i<(b);i++)
#define REP(i,n) for (int i=0;i<(n);i++)

signed main()
{
	string sa, sb, sc;
	cin >> sa >> sb >> sc;
	int a = 0, b = 0, c = 0;
	char now = 'a';
	char winner = 'D';
	while (true) {
		if (now == 'a') { 
			if (sa.length() > a) { now = sa[a]; }
			else { winner ='A';  break; }
			a++;
		}
		if (now == 'b') {
			if (sb.length() > b) { now = sb[b]; }
			else { winner = 'B';  break; }
			b++;
		}
		if (now == 'c') {
			if (sc.length() > c) { now = sc[c]; }
			else { winner = 'C';  break; }
			c++;
		}
	}
	cout << winner << endl;
}

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