#ifdef ONLINE_JUDGE
#include "coins.h"
#endif
#include <bits/stdc++.h>
using namespace std;
#define pp pair <int, int>
#define fi first
#define se second
#define yes cout << "YES\n"
#define no cout << "NO\n"
vector <int> coin_flips (vector <int> b, int c){
int state[2] = {(c == 0), (c == 1)};
int match = (state[0] == b[0]) + (state[1] == b[1]);
if (match == 1){
vector <int> vec;
if (state[0] != b[0]) vec.push_back (0);
if (state[1] != b[1]) vec.push_back (1);
return vec;
}
if (c == 0){
vector <int> vec;
if (b[0]) vec.push_back (0);
if (b[1]) vec.push_back (1);
return vec;
}
if (c == 1){
vector <int> vec;
if (b[0] == 0) vec.push_back (0);
if (b[1] == 0) vec.push_back (1);
return vec;
}
return vector <int> ();
}
int find_coin (vector <int> b){
if (b[0] == 0 && b[1] == 0) return 0;
if (b[0] && b[1]) return 1;
if (b[0]) return 0;
return 1;
}
// love you, noodles0428 <333
// tst25
