SRM545 Div2 Easy(250) ANDEquation
#include <vector> using namespace std; class ANDEquation{public: int restoreY( vector <int> A ) { int N = (int)A.size()-1; for ( int i=0; i<N+1; i++ ) { int l = 0xfffff; for ( int j=0; j<N+1; j++ ) if ( j!=i ) l &= A[j]; if ( l==A[i] ) return l; } return -1; }};