#include "coins.h"
using namespace std;
vector<int> coin_flips(vector<int> b, int c) {
vector<int> ans;
for (int i=0;i<8;i++) {
if ((c&(1<<i))) {
if (b[i]==0) ans.push_back(i);
}
else if (b[i]==1) ans.push_back(i);
}
if (ans.empty()) ans.push_back(8);
return ans;
}
int find_coin(vector<int> b) {
int ans = 0;
for (int i=0;i<8;i++) {
if (b[i]) ans += 1<<i;
}
return ans;
}
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