#include <bits/stdc++.h>
#include "coins.h"
using namespace std;
#define fi first
#define se second
#define all(a) a.begin(),a.end()
#define pb push_back
const int maxn = 2e5+1;
vector <int> coin_flips(vector <int> b, int c){
vector <int> d;
int o = 0 ,z = 0;
for(int i : b){
if(i == 1)o++;
else z++;
}
int ch = -1;
if(o > z)ch = 1;
else ch = 0;
if(b[c] == ch){
if(o == 0 || z == 0){
d.push_back(c);
return d;
}
for(int i = 0;i < b.size();i++){
if(b[i] == ch && i != c)d.push_back(i);
}
}
else{
d.push_back(c);
}
return d;
}
int find_coin(vector <int> b){
int o = 0 ,z = 0;
for(int i : b){
if(i == 1)o++;
else z++;
}
int ch = -1;
if(o < z)ch = 1;
else ch = 0;
for(int i = 0;i < b.size();i++){
if(b[i] == ch)return i;
}
return 0;
}
