#include using namespace std; using uint = unsigned int; using ll = long long; #define CIN( LL , A ) LL A; cin >> A #define GETLINE( A ) string A; getline( cin , A ) #define GETLINE_SEPARATE( A , SEPARATOR ) string A; getline( cin , A , SEPARATOR ) #define FOR_LL( VAR , INITIAL , FINAL_PLUS_ONE ) for( ll VAR = INITIAL ; VAR < FINAL_PLUS_ONE ; VAR ++ ) #define FOR_ITR( ARRAY , ITR , END ) for( auto ITR = ARRAY .begin() , END = ARRAY .end() ; ITR != END ; ITR ++ ) #define REPEAT( HOW_MANY_TIMES ) FOR_LL( VARIABLE_FOR_REPEAT , 0 , HOW_MANY_TIMES ) #define RETURN( ANSWER ) cout << ( ANSWER ) << endl; return 0 #define DOUBLE( PRECISION , ANSWER ) cout << fixed << setprecision( PRECISION ) << ( ANSWER ) << endl; return 0 #define MIN( A , B ) A < B ? A : B; #define MAX( A , B ) A < B ? B : A; template inline T Distance( const T& a , const T& b ){ return a < b ? b - a : a - b; } constexpr const ll D = 30; constexpr const ll P = 998244353; int main(){ CIN( ll , N ); ll A[200000]; FOR_LL( i , 0 , N ){ cin >> A[i]; } sort( A , A + N ); ll count = 0; ll d_prev; ll e_prev; ll& A0 = A[0]; FOR_LL( j , 0 , D ){ ll A0_shift = A0 >> j; d_prev = A0_shift % 2; e_prev = A0 - ( A0_shift << j ); bool searching_first_1 = true; FOR_LL( i , 1 , N ){ ll& Ai = A[i]; ll Ai_shift = Ai >> j; ll d = Ai_shift % 2; if( searching_first_1 ){ if( d == 1 ){ searching_first_1 = false; ll e = Ai - ( Ai_shift << j ); FOR_LL( k , 0 , i ){ ll& Ak = A[k]; ll Ak_shift = Ak >> j; ll e_past = Ak - ( Ak_shift << j ); if( e_past == e ){ count++; i = N; k = i; } } d_prev = d; e_prev = e; } } else { ll e = Ai - ( Ai_shift << j ); if( d_prev != d ? e_prev == e : false ){ count++; i = N; } else { d_prev = d; e_prev = e; } } } } ll answer = 1; REPEAT( count ){ answer = ( answer * 2 ) % P; } RETURN( answer ); }