#ifdef DEBUG #define _GLIBCXX_DEBUG #define UNTIE ios_base::sync_with_stdio( false ); cin.tie( nullptr ); signal( SIGABRT , &AlertAbort ) #define DEXPR( LL , BOUND , VALUE , DEBUG_VALUE ) CEXPR( LL , BOUND , DEBUG_VALUE ) #define CERR( MESSAGE ) cerr << MESSAGE << endl; #define COUT( ANSWER ) cout << "出力: " << ANSWER << endl #define ASSERT( A , MIN , MAX ) CERR( "ASSERTチェック: " << ( MIN ) << ( ( MIN ) <= A ? "<=" : ">" ) << A << ( A <= ( MAX ) ? "<=" : ">" ) << ( MAX ) ); assert( ( MIN ) <= A && A <= ( MAX ) ) #define AUTO_CHECK bool auto_checked = true; AutoCheck( auto_checked ); if( auto_checked ){ return 0; }; #define START_WATCH( PROCESS_NAME ) StartWatch( PROCESS_NAME ) #define STOP_WATCH( HOW_MANY_TIMES ) StopWatch( HOW_MANY_TIMES ) #else #pragma GCC optimize ( "O3" ) #pragma GCC optimize( "unroll-loops" ) #pragma GCC target ( "sse4.2,fma,avx2,popcnt,lzcnt,bmi2" ) #define UNTIE ios_base::sync_with_stdio( false ); cin.tie( nullptr ) #define DEXPR( LL , BOUND , VALUE , DEBUG_VALUE ) CEXPR( LL , BOUND , VALUE ) #define CERR( MESSAGE ) #define COUT( ANSWER ) cout << ANSWER << "\n" #define ASSERT( A , MIN , MAX ) assert( ( MIN ) <= A && A <= ( MAX ) ) #define AUTO_CHECK #define START_WATCH( PROCESS_NAME ) #define STOP_WATCH( HOW_MANY_TIMES ) #endif // #define RANDOM_TEST #include using namespace std; using uint = unsigned int; using ll = long long; using ull = unsigned long long; #define ATT __attribute__( ( target( "sse4.2,fma,avx2,popcnt,lzcnt,bmi2" ) ) ) #define TYPE_OF( VAR ) decay_t #define CEXPR( LL , BOUND , VALUE ) constexpr LL BOUND = VALUE #define CIN( LL , A ) LL A; cin >> A #define CIN_ASSERT( A , MIN , MAX ) TYPE_OF( MAX ) A; SET_ASSERT( A , MIN , MAX ) #define GETLINE( A ) string A; getline( cin , A ) #define GETLINE_SEPARATE( A , SEPARATOR ) string A; getline( cin , A , SEPARATOR ) #define FOR( VAR , INITIAL , FINAL_PLUS_ONE ) for( TYPE_OF( FINAL_PLUS_ONE ) VAR = INITIAL ; VAR < FINAL_PLUS_ONE ; VAR ++ ) #define FOREQ( VAR , INITIAL , FINAL ) for( TYPE_OF( FINAL ) VAR = INITIAL ; VAR <= FINAL ; VAR ++ ) #define FOREQINV( VAR , INITIAL , FINAL ) for( TYPE_OF( INITIAL ) VAR = INITIAL ; VAR >= FINAL ; VAR -- ) #define AUTO_ITR( ARRAY ) auto itr_ ## ARRAY = ARRAY .begin() , end_ ## ARRAY = ARRAY .end() #define FOR_ITR( ARRAY ) for( AUTO_ITR( ARRAY ) , itr = itr_ ## ARRAY ; itr_ ## ARRAY != end_ ## ARRAY ; itr_ ## ARRAY ++ , itr++ ) #define REPEAT( HOW_MANY_TIMES ) FOR( VARIABLE_FOR_REPEAT_ ## HOW_MANY_TIMES , 0 , HOW_MANY_TIMES ) #define SET_PRECISION( DECIMAL_DIGITS ) cout << fixed << setprecision( DECIMAL_DIGITS ) #define QUIT goto END_MAIN #define TEST_CASE_NUM( BOUND ) DEXPR( int , bound_T , BOUND , min( BOUND , 100 ) ); int T = 1; if constexpr( bound_T > 1 ){ SET_ASSERT( T , 1 , bound_T ); } #define START_MAIN REPEAT( T ){ if constexpr( bound_T > 1 ){ CERR( "testcase " << VARIABLE_FOR_REPEAT_T << ":" ); } #define FINISH_MAIN QUIT; } END_MAIN: CERR( "" ); #ifdef DEBUG inline void AlertAbort( int n ) { CERR( "abort関数が呼ばれました。assertマクロのメッセージが出力されていない場合はオーバーフローの有無を確認をしてください。" ); } void AutoCheck( bool& auto_checked ); void StartWatch( const string& process_name = "nothing" ); void StopWatch( const int& how_many_times = 1 ); #endif #if defined( DEBUG ) && defined( RANDOM_TEST ) ll GetRand( const ll& Rand_min , const ll& Rand_max ); #define SET_ASSERT( A , MIN , MAX ) CERR( #A << " = " << ( A = GetRand( MIN , MAX ) ) ) #define RETURN( ANSWER ) if( ( ANSWER ) == guchoku ){ CERR( ( ANSWER ) << " == " << guchoku ); goto END_MAIN; } else { CERR( ( ANSWER ) << " != " << guchoku ); QUIT; } #else #define SET_ASSERT( A , MIN , MAX ) cin >> A; ASSERT( A , MIN , MAX ) #define RETURN( ANSWER ) COUT( ( ANSWER ) ); QUIT #endif // 算術的関数 template inline T Absolute( const T& a ){ return a > 0 ? a : -a; } template inline T Residue( const T& a , const T& p ){ return a >= 0 ? a % p : p - 1 - ( ( - ( a + 1 ) ) % p ); } #define POWER( ANSWER , ARGUMENT , EXPONENT ) \ static_assert( ! is_same::value && ! is_same::value ); \ TYPE_OF( ARGUMENT ) ANSWER{ 1 }; \ { \ TYPE_OF( ARGUMENT ) ARGUMENT_FOR_SQUARE_FOR_POWER = ( ARGUMENT ); \ TYPE_OF( EXPONENT ) EXPONENT_FOR_SQUARE_FOR_POWER = ( EXPONENT ); \ while( EXPONENT_FOR_SQUARE_FOR_POWER != 0 ){ \ if( EXPONENT_FOR_SQUARE_FOR_POWER % 2 == 1 ){ \ ANSWER *= ARGUMENT_FOR_SQUARE_FOR_POWER; \ } \ ARGUMENT_FOR_SQUARE_FOR_POWER *= ARGUMENT_FOR_SQUARE_FOR_POWER; \ EXPONENT_FOR_SQUARE_FOR_POWER /= 2; \ } \ } \ #define POWER_MOD( ANSWER , ARGUMENT , EXPONENT , MODULO ) \ ll ANSWER{ 1 }; \ { \ ll ARGUMENT_FOR_SQUARE_FOR_POWER = ( ( MODULO ) + ( ( ARGUMENT ) % ( MODULO ) ) ) % ( MODULO ); \ TYPE_OF( EXPONENT ) EXPONENT_FOR_SQUARE_FOR_POWER = ( EXPONENT ); \ while( EXPONENT_FOR_SQUARE_FOR_POWER != 0 ){ \ if( EXPONENT_FOR_SQUARE_FOR_POWER % 2 == 1 ){ \ ANSWER = ( ANSWER * ARGUMENT_FOR_SQUARE_FOR_POWER ) % ( MODULO ); \ } \ ARGUMENT_FOR_SQUARE_FOR_POWER = ( ARGUMENT_FOR_SQUARE_FOR_POWER * ARGUMENT_FOR_SQUARE_FOR_POWER ) % ( MODULO ); \ EXPONENT_FOR_SQUARE_FOR_POWER /= 2; \ } \ } \ #define FACTORIAL_MOD( ANSWER , ANSWER_INV , INVERSE , MAX_INDEX , CONSTEXPR_LENGTH , MODULO ) \ static ll ANSWER[CONSTEXPR_LENGTH]; \ static ll ANSWER_INV[CONSTEXPR_LENGTH]; \ static ll INVERSE[CONSTEXPR_LENGTH]; \ { \ ll VARIABLE_FOR_PRODUCT_FOR_FACTORIAL = 1; \ ANSWER[0] = VARIABLE_FOR_PRODUCT_FOR_FACTORIAL; \ FOREQ( i , 1 , MAX_INDEX ){ \ ANSWER[i] = ( VARIABLE_FOR_PRODUCT_FOR_FACTORIAL *= i ) %= ( MODULO ); \ } \ ANSWER_INV[0] = ANSWER_INV[1] = INVERSE[1] = VARIABLE_FOR_PRODUCT_FOR_FACTORIAL = 1; \ FOREQ( i , 2 , MAX_INDEX ){ \ ANSWER_INV[i] = ( VARIABLE_FOR_PRODUCT_FOR_FACTORIAL *= INVERSE[i] = ( MODULO ) - ( ( ( ( MODULO ) / i ) * INVERSE[ ( MODULO ) % i ] ) % ( MODULO ) ) ) %= ( MODULO ); \ } \ } \ // 二分探索テンプレート // EXPRESSIONがANSWERの広義単調関数の時、EXPRESSION >= TARGETの整数解を格納。 #define BS( ANSWER , MINIMUM , MAXIMUM , EXPRESSION , DESIRED_INEQUALITY , TARGET , INEQUALITY_FOR_CHECK , UPDATE_U , UPDATE_L , UPDATE_ANSWER ) \ static_assert( ! is_same::value && ! is_same::value ); \ ll ANSWER = MINIMUM; \ if( MINIMUM <= MAXIMUM ){ \ ll VARIABLE_FOR_BINARY_SEARCH_L = MINIMUM; \ ll VARIABLE_FOR_BINARY_SEARCH_U = MAXIMUM; \ ANSWER = ( VARIABLE_FOR_BINARY_SEARCH_L + VARIABLE_FOR_BINARY_SEARCH_U ) / 2; \ ll VARIABLE_FOR_DIFFERENCE_FOR_BINARY_SEARCH; \ while( VARIABLE_FOR_BINARY_SEARCH_L != VARIABLE_FOR_BINARY_SEARCH_U ){ \ VARIABLE_FOR_DIFFERENCE_FOR_BINARY_SEARCH = ( EXPRESSION ) - ( TARGET ); \ CERR( "二分探索中: " << VARIABLE_FOR_BINARY_SEARCH_L << "<=" << ANSWER << "<=" << VARIABLE_FOR_BINARY_SEARCH_U << ":" << EXPRESSION << "-" << TARGET << "=" << VARIABLE_FOR_DIFFERENCE_FOR_BINARY_SEARCH ); \ if( VARIABLE_FOR_DIFFERENCE_FOR_BINARY_SEARCH INEQUALITY_FOR_CHECK 0 ){ \ VARIABLE_FOR_BINARY_SEARCH_U = UPDATE_U; \ } else { \ VARIABLE_FOR_BINARY_SEARCH_L = UPDATE_L; \ } \ ANSWER = UPDATE_ANSWER; \ } \ CERR( "二分探索終了: " << VARIABLE_FOR_BINARY_SEARCH_L << "<=" << ANSWER << "<=" << VARIABLE_FOR_BINARY_SEARCH_U << ":" << EXPRESSION << ( EXPRESSION > TARGET ? ">" : EXPRESSION < TARGET ? "<" : "=" ) << TARGET ); \ CERR( ( EXPRESSION DESIRED_INEQUALITY TARGET ? "二分探索成功" : "二分探索失敗" ) ); \ assert( EXPRESSION DESIRED_INEQUALITY TARGET ); \ } else { \ CERR( "二分探索失敗: " << MINIMUM << ">" << MAXIMUM ); \ assert( MINIMUM <= MAXIMUM ); \ } \ // 単調増加の時にEXPRESSION >= TARGETの最小解を格納。 #define BS1( ANSWER , MINIMUM , MAXIMUM , EXPRESSION , TARGET ) \ BS( ANSWER , MINIMUM , MAXIMUM , EXPRESSION , >= , TARGET , >= , ANSWER , ANSWER + 1 , ( VARIABLE_FOR_BINARY_SEARCH_L + VARIABLE_FOR_BINARY_SEARCH_U ) / 2 ) \ // 単調増加の時にEXPRESSION <= TARGETの最大解を格納。 #define BS2( ANSWER , MINIMUM , MAXIMUM , EXPRESSION , TARGET ) \ BS( ANSWER , MINIMUM , MAXIMUM , EXPRESSION , <= , TARGET , > , ANSWER - 1 , ANSWER , ( VARIABLE_FOR_BINARY_SEARCH_L + 1 + VARIABLE_FOR_BINARY_SEARCH_U ) / 2 ) \ // 単調減少の時にEXPRESSION >= TARGETの最大解を格納。 #define BS3( ANSWER , MINIMUM , MAXIMUM , EXPRESSION , TARGET ) \ BS( ANSWER , MINIMUM , MAXIMUM , EXPRESSION , >= , TARGET , < , ANSWER - 1 , ANSWER , ( VARIABLE_FOR_BINARY_SEARCH_L + 1 + VARIABLE_FOR_BINARY_SEARCH_U ) / 2 ) \ // 単調減少の時にEXPRESSION <= TARGETの最小解を格納。 #define BS4( ANSWER , MINIMUM , MAXIMUM , EXPRESSION , TARGET ) \ BS( ANSWER , MINIMUM , MAXIMUM , EXPRESSION , <= , TARGET , <= , ANSWER , ANSWER + 1 , ( VARIABLE_FOR_BINARY_SEARCH_L + VARIABLE_FOR_BINARY_SEARCH_U ) / 2 ) \ // t以下の値が存在すればその最大値のiterator、存在しなければend()を返す。 template inline typename set::iterator MaximumLeq( set& S , const T& t ) { const auto end = S.end(); if( S.empty() ){ return end; } auto itr = S.upper_bound( t ); return itr == end ? S.find( *( S.rbegin() ) ) : itr == S.begin() ? end : --itr; } // t未満の値が存在すればその最大値のiterator、存在しなければend()を返す。 template inline typename set::iterator MaximumLt( set& S , const T& t ) { const auto end = S.end(); if( S.empty() ){ return end; } auto itr = S.lower_bound( t ); return itr == end ? S.find( *( S.rbegin() ) ) : itr == S.begin() ? end : --itr; } // t以上の値が存在すればその最小値のiterator、存在しなければend()を返す。 template inline typename set::iterator MinimumGeq( set& S , const T& t ) { return S.lower_bound( t ); } // tより大きい値が存在すればその最小値のiterator、存在しなければend()を返す。 template inline typename set::iterator MinimumGt( set& S , const T& t ) { return S.upper_bound( t ); } // データ構造用関数 template inline T add( const T& t0 , const T& t1 ) { return t0 + t1; } template inline const T& zero() { static const T z = 0; return z; } template inline T add_inv( const T& t ) { return -t; } template inline T multiply( const T& t0 , const T& t1 ) { return t0 * t1; } template inline const T& one() { static const T o = 1; return o; } template inline T id( const T& v ) { return v; } // グリッド問題用関数 int H , W , H_minus , W_minus , HW; inline pair EnumHW( const int& v ) { return { v / W , v % W }; } inline int EnumHW_inv( const int& h , const int& w ) { return h * W + w; } const string direction[4] = {"U","R","D","L"}; // (i,j)->(k,h)の方向番号を取得 inline int DirectionNumberOnGrid( const int& i , const int& j , const int& k , const int& h ){return ik?0:jh?3:(assert(false),-1);} // v->wの方向番号を取得 inline int DirectionNumberOnGrid( const int& v , const int& w ){auto [i,j]=EnumHW(v);auto [k,h]=EnumHW(w);return DirectionNumberOnGrid(i,j,k,h);} // 方向番号の反転U<->D、R<->L inline int ReverseDirectionNumberOnGrid( const int& n ){assert(0<=n&&n<4);return(n+2)%4;} // 圧縮用 #define TE template #define TY typename #define US using #define ST static #define IN inline #define CL class #define PU public #define OP operator #define CE constexpr #define CO const #define NE noexcept #define RE return #define WH while #define VO void #define VE vector #define LI list #define BE begin #define EN end #define SZ size #define MO move #define TH this #define CRI CO int& #define CRUI CO uint& #define CRL CO ll& // 大きな素数 // inline CEXPR( ll , P , 998244353 ); // // inline CEXPR( ll , P , 1000000007 ); // データ構造使用畤のNの上限 // inline CEXPR( int , bound_N , 10 ); inline DEXPR( int , bound_N , 100000 , 100 ); // 0が5個 // inline CEXPR( int , bound_N , 1000000000 ); // 0が9個 // inline CEXPR( ll , bound_N , 1000000000000000000 ); // 0が18個 // データ構造使用畤のMの上限 // inline CEXPR( TYPE_OF( bound_N ) , bound_M , bound_N ); // inline CEXPR( int , bound_M , 10 ); inline DEXPR( int , bound_M , 100000 , 100 ); // 0が5個 // inline CEXPR( int , bound_M , 1000000000 ); // 0が9個 // inline CEXPR( ll , bound_M , 1000000000000000000 ); // 0が18個 // データ構造や壁配列使用畤のH,Wの上限 inline DEXPR( int , bound_H , 1000 , 10 ); // inline DEXPR( int , bound_H , 100000 , 10 ); // 0が5個 // inline CEXPR( int , bound_H , 1000000000 ); // 0が9個 inline CEXPR( int , bound_W , bound_H ); static_assert( ll( bound_H ) * bound_W < ll( 1 ) << 31 ); inline CEXPR( int , bound_HW , bound_H * bound_W ); // CEXPR( int , bound_HW , 100000 ); // 0が5個 // CEXPR( int , bound_HW , 1000000 ); // 0が6個 inline void SetEdgeOnGrid( const string& Si , const int& i , list ( &e )[bound_HW] , const char& walkable = '.' ){FOR(j,0,W){if(Si[j]==walkable){int v = EnumHW_inv(i,j);if(i>0){e[EnumHW_inv(i-1,j)].push_back(v);}if(i+10){e[EnumHW_inv(i,j-1)].push_back(v);}if(j+1; // list e[bound_M]; // bound_Mのデフォルト値は10^5 // // list e[bound_HW]; // bound_HWのデフォルト値は10^6 // list E( const int& i ) // { // list answer = e[i]; // // 入力によらない処理 // return answer; // } template INT GCD( const INT& b_0 , const INT& b_1 ) { INT b[2] = { b_0 , b_1 }; int i_0 = ( b_0 >= b_1 ? 0 : 1 ); int i_1 = 1 - i_0; while( b[i_1] != 0 ){ b[i_0] %= b[i_1]; swap( i_0 , i_1 ); } return b[i_0]; } TE CL PrimeEnumeration{PU:INT m_val[LE_max];int m_LE;CE PrimeEnumeration();};TE CE PrimeEnumeration::PrimeEnumeration():m_val(),m_LE(0){bool is_comp[val_limit] ={};for(INT i = 2;i < val_limit;i++){if(is_comp[i] == false){INT j = i;WH((j += i) < val_limit){is_comp[j] = true;}m_val[m_LE++] = i;if(m_LE >= LE_max){break;}}}}TE VO SetPrimeFactorisation(CO PrimeEnumeration& prime,CO INT& n,VE& P,VE& EX){INT n_copy = n;int i = 0;WH(i < prime.m_LE){CO INT& p = prime.m_val[i];if(p * p > n_copy){break;}if(n_copy % p == 0){P.push_back(p);EX.push_back(1);INT& EX_back = EX.back();n_copy /= p;WH(n_copy % p == 0){EX_back++;n_copy /= p;}}i++;}if(n_copy != 1){P.push_back(n_copy);EX.push_back(1);}RE;} #define EULER_FUNCTION EX.clear();INT AN = n;CO INT SZ = P.SZ();for(INT i = 0;i < SZ;i++){AN -= AN / P[i];}RE AN; TE INT EulerFunction(CO PrimeEnumeration& prime,CO INT& n,VE& P,VE& EX){SetPrimeFactorisation(prime,n,P,EX);EULER_FUNCTION;}TE IN INT EulerFunction(CO PrimeEnumeration& prime,CO INT& n){VE P{};VE EX{};RE EulerFunction(prime,n,P,EX);}TE VO MemoriseEulerFunction(CO PrimeEnumeration& prime,INT2(&memory)[SZ]){ST INT quotient[SZ];for(int n = 1;n < SZ;n++){memory[n] = quotient[n] = n;}for(int i = 0;i < prime.m_LE;i++){CO INT& p_i = prime.m_val[i];int n = 0;WH((n += p_i)< SZ){INT2& memory_n = memory[n];INT& quotient_n = quotient[n];memory_n -= memory_n / p_i;WH((quotient_n /= p_i)% p_i == 0){}}}for(int n = val_limit;n < SZ;n++){CO INT& quotient_n = quotient[n];if(quotient_n != 1){INT2& memory_n = memory[n];memory_n -= memory_n / quotient_n;}}RE;} int main() { UNTIE; AUTO_CHECK; TEST_CASE_NUM( 1 ); START_MAIN; CIN( ll , a ); CIN( ll , b ); ll gcd = GCD( a , b ); a /= gcd; b /= gcd; constexpr PrimeEnumeration pe{}; ll euler_minus = EulerFunction( pe , b ) - 1; cout << "b"; REPEAT( euler_minus ){ cout << "a"; } cout << "aa\n"; cout << "a"; REPEAT( euler_minus ){ cout << "a"; } cout << "ba\n"; // CIN( ll , K ); // // CIN_ASSERT( N , 1 , bound_N ); // 基本不要、上限のデフォルト値は10^5 // // CIN_ASSERT( M , 1 , bound_M ); // 基本不要、上限のデフォルト値は10^5 // CIN( string , S ); // CIN( string , T ); // cin >> H >> W; // // SET_ASSERT( H , 1 , bound_H ); // 基本不要、上限のデフォルト値は10^3 // // SET_ASSERT( W , 1 , bound_W ); // 基本不要、上限のデフォルト値は10^3 // H_minus = H - 1; // W_minus = W - 1; // HW = H * W; // // assert( HW <= bound_HW ); // 基本不要、上限のデフォルト値は10^6 // string S[H]; // // bool non_wall[bound_H+1][bound_W+1]={}; // FOR( i , 0 , H ){ // cin >> S[i]; // // SetEdgeOnGrid( S[i] , i , e ); // eの宣言のコメントアウト必要 // // SetWallOnGrid( S[i] , i , non_wall ); // } // // (i,j)->(k,h)の方向番号を取得: DirectionNumberOnGrid( i , j , k , h ); // // v->wの方向番号を取得: DirectionNumberOnGrid( v , w ); // // 方向番号の反転U<->D、R<->L: ReverseDirectionNumberOnGrid( n ); // ll A[N]; // // ll B[N]; // // ll A[bound_N]; // 基本不要、長さのデフォルト値は10^5 // // ll B[bound_N]; // 基本不要、長さのデフォルト値は10^5 // FOR( i , 0 , N ){ // cin >> A[i]; // // cin >> B[i]; // } // FOR( i , 0 , M ){ // CIN_ASSERT( ui , 1 , N ); // CIN_ASSERT( vi , 1 , N ); // ui--; // vi--; // e[ui].push_back( vi ); // e[vi].push_back( ui ); // } // CIN( int , Q ); // tuple query[Q]; // DEXPR( int , bound_Q , 100000 , 100 ); // 基本不要 // CIN_ASSERT( Q , 1 , bound_Q ); // 基本不要 // FOR( q , 0 , Q ){ // CIN( int , type ); // if( type == 1 ){ // CIN( int , x ); // CIN( int , y ); // // query[q] = { type , x , y }; // } else if( type == 2 ){ // CIN( int , x ); // CIN( int , y ); // // query[q] = { type , x , y }; // } else { // CIN( int , x ); // CIN( int , y ); // // query[q] = { type , x , y }; // } // } // // ll guchoku = Guchoku(); // ll answer = 0; // FOR( i , 0 , N ){ // answer += A[i]; // } // // COUT( ( answer ) ); // RETURN( answer ); FINISH_MAIN; }