This submission is migrated from previous version of oj.uz, which used different machine for grading. This submission may have different result if resubmitted.
#include "coins.h"
#include <vector>
using namespace std;
vector<int> coin_flips(vector<int> b, int c) {
vector<int> flips;
int flip=0;
for(int i=0;i<64;i++)if(b[i])flip^=i;
flip^=c;
flips.push_back(flip);
return flips;
}
int find_coin(vector<int> b) {
int sol=0;
for(int i=0;i<64;i++){
if(b[i])sol^=i;
}
return sol;
}
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