結果
問題 | No.2193 メガの下1桁 |
ユーザー | 👑 p-adic |
提出日時 | 2022-08-04 09:47:36 |
言語 | C++14 (gcc 12.3.0 + boost 1.83.0) |
結果 |
WA
(最新)
AC
(最初)
|
実行時間 | - |
コード長 | 6,470 bytes |
コンパイル時間 | 675 ms |
コンパイル使用メモリ | 72,960 KB |
実行使用メモリ | 5,376 KB |
最終ジャッジ日時 | 2024-06-06 21:21:29 |
合計ジャッジ時間 | 1,642 ms |
ジャッジサーバーID (参考情報) |
judge2 / judge1 |
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テストケース
テストケース表示入力 | 結果 | 実行時間 実行使用メモリ |
---|---|---|
testcase_00 | AC | 2 ms
5,248 KB |
testcase_01 | AC | 2 ms
5,376 KB |
testcase_02 | AC | 1 ms
5,376 KB |
testcase_03 | AC | 2 ms
5,376 KB |
testcase_04 | AC | 1 ms
5,376 KB |
testcase_05 | AC | 2 ms
5,376 KB |
testcase_06 | AC | 2 ms
5,376 KB |
testcase_07 | AC | 2 ms
5,376 KB |
testcase_08 | AC | 2 ms
5,376 KB |
testcase_09 | AC | 2 ms
5,376 KB |
testcase_10 | AC | 2 ms
5,376 KB |
testcase_11 | AC | 2 ms
5,376 KB |
testcase_12 | AC | 2 ms
5,376 KB |
testcase_13 | AC | 2 ms
5,376 KB |
testcase_14 | AC | 1 ms
5,376 KB |
testcase_15 | AC | 1 ms
5,376 KB |
testcase_16 | AC | 1 ms
5,376 KB |
testcase_17 | AC | 2 ms
5,376 KB |
testcase_18 | WA | - |
testcase_19 | WA | - |
testcase_20 | AC | 1 ms
5,376 KB |
testcase_21 | AC | 1 ms
5,376 KB |
testcase_22 | AC | 2 ms
5,376 KB |
testcase_23 | AC | 2 ms
5,376 KB |
testcase_24 | AC | 2 ms
5,376 KB |
testcase_25 | AC | 2 ms
5,376 KB |
testcase_26 | AC | 2 ms
5,376 KB |
testcase_27 | AC | 2 ms
5,376 KB |
testcase_28 | AC | 1 ms
5,376 KB |
testcase_29 | AC | 1 ms
5,376 KB |
testcase_30 | AC | 1 ms
5,376 KB |
testcase_31 | WA | - |
testcase_32 | WA | - |
testcase_33 | AC | 1 ms
5,376 KB |
testcase_34 | AC | 1 ms
5,376 KB |
testcase_35 | WA | - |
testcase_36 | WA | - |
testcase_37 | WA | - |
testcase_38 | AC | 1 ms
5,376 KB |
testcase_39 | WA | - |
ソースコード
#include <iostream> #include <list> #include <vector> #include <string> #include <stdio.h> #include <stdint.h> using namespace std; using ll = long long; ll Solve( ll& M , const ll& D , const ll& N , const ll& B ); int main() { ll M; ll D; ll N; ll B; cin >> M; cin >> D; cin >> N; cin >> B; Solve( M , D , N , B ); return 0; } void MemorisePrimeFactor( const ll& Base , list<ll>& pfB , list<ll>& peB ); void MemoriseDivisionData( ll& M , list<ll>& prM , const ll& Base , const list<ll>& pfB ); void Triangle( ll& M , list<ll>& prM , const ll& D , const ll& Base , const list<ll>& pfB , const list<ll>& peB , bool& not_overflow ); void TriangleMemorise( ll& M , list<ll>& prM , const ll& D , const ll& Base , const list<ll>& pfB , const list<ll>& peB , bool& not_overflow , const ll& N ); ll Solve( ll& M , const ll& D , const ll& N , const ll& B ) { // Bの各素因数ごとにオイラー関数を計算しそれらとBの最小公倍数でBを置き換える、 // という操作の有限反復によって得られる不動点がBase const ll Base = B == 2 ? 2 : B == 3 ? 6 : B == 4 ? 4 : B == 5 ? 20 : B == 6 ? 6 : B == 7 ? 42 : B == 8 ? 8 : B == 9 ? 18 : B == 10 ? 20 : B == 11 ? 220 : 0; bool not_overflow = M < Base; M %= Base; list<ll> pfB{}; list<ll> peB{}; list<ll> prM{}; MemorisePrimeFactor( Base , pfB , peB ); if( N < Base ){ for( ll n = 0 ; n < N ; n++ ){ Triangle( M , prM , D , B , pfB , peB , not_overflow ); } } else { TriangleMemorise( M , prM , D , B , pfB , peB , not_overflow , N ); } const ll answer = M % B; if( M == 10 ){ cout << "A" << endl; } else { cout << answer << endl; } return answer; } void MemorisePrimeFactor( const ll& Base , list<ll>& pfB , list<ll>& peB ) { constexpr const ll size = 5; constexpr const ll prime[size] = { 2 , 3 , 5 , 7 , 11 }; for( ll i = 0 ; i < size ; i++ ){ const ll& p = prime[i]; ll power = 1; ll j = Base; while( j != 0 ){ if( j % p == 0 ){ power *= p; j /= p; } else { j = 0; } } if( power != 1 ){ pfB.push_back( p ); peB.push_back( power ); } } return; } void MemoriseDivisionData( ll& M , list<ll>& prM , const ll& Base , const list<ll>& pfB ) { for( auto itr = pfB.begin() , end = pfB.end() ; itr != end ; itr++ ){ prM.push_back( M % *itr == 0 ? 0 : M ); } return; } void ChineseReminderTheorem( ll& M , const list<ll>& prM , const ll& Base , const list<ll>& peB ); void Triangle( ll& M , list<ll>& prM , const ll& D , const ll& Base , const list<ll>& pfB , const list<ll>& peB , bool& not_overflow ) { const ll M_shift = ( M + D ) % Base; if( not_overflow ){ ll power = 1; for( ll i = 0 ; i < M ; i++ ){ power *= M_shift; if( not_overflow && power >= Base ){ not_overflow = false; } power %= Base; } M = power; return; } if( M == 0 ){ return; } ll power = M_shift; ll exponent = M; M = 1; while( exponent != 0 ){ if( exponent % 2 == 1 ){ M = ( M * power ) % Base; } exponent /= 2; power = ( power * power ) % Base; } MemoriseDivisionData( M , prM , Base , pfB ); ChineseReminderTheorem( M , prM , Base , peB ); return; } ll SignatureSafeResidue( const ll& M , const ll& Base ); void ChineseReminderTheorem( ll& M , const list<ll>& prM , const ll& Base , const list<ll>& peB ) { if( Base == 1 ){ M = 0; } else if ( Base == 2 ){ auto itr = prM.begin(); const ll& m0 = *itr; M = m0; } else if ( Base == 6 ) { auto itr = prM.begin(); const ll& m0 = *itr; itr++; const ll& m1 = *itr; // 1 = 2 * ( -1 ) + 3 * 1; M = SignatureSafeResidue( m0 * 3 - m1 * 2 , Base ); } else if ( Base == 4 ){ auto itr = prM.begin(); const ll& m0 = *itr; M = m0; } else if ( Base == 20 ){ auto itr = prM.begin(); const ll& m0 = *itr; itr++; const ll& m1 = *itr; // 1 = 4 * ( -1 ) + 5 * 1; M = SignatureSafeResidue( m0 * 5 - m1 * 4 , Base ); } else if ( Base == 42 ){ auto itr = prM.begin(); const ll& m0 = *itr; itr++; const ll& m1 = *itr; itr++; const ll& m2 = *itr; // 1 = 2 * ( -1 ) + 3 * 1; M = m0 * 3 - m1 * 2; // 1 = 6 * ( -1 ) + 7 * 1; M = SignatureSafeResidue( M * 7 - m2 * 6 , Base ); } else if ( Base == 8 ){ auto itr = prM.begin(); const ll& m0 = *itr; M = m0; } else if ( Base == 18 ){ auto itr = prM.begin(); const ll& m0 = *itr; itr++; const ll& m1 = *itr; // 1 = 2 * ( -4 ) + 9 * 1; M = SignatureSafeResidue( m0 * 9 - m1 * 8 , Base ); } else { auto itr = prM.begin(); const ll& m0 = *itr; itr++; const ll& m1 = *itr; itr++; const ll& m2 = *itr; // 1 = 4 * ( -1 ) + 5 * 1; M = m0 * 5 - m1 * 4; // 1 = 20 * ( -6 ) + 11 * 11; M = SignatureSafeResidue( M * 121 - m2 * 120 , Base ); } return; } ll SignatureSafeResidue( const ll& M , const ll& Base ) { if( M >= 0 ){ return M % Base; } const ll N = ( -M ) % Base; return N == 0 ? N : Base - N; } void TriangleMemorise( ll& M , list<ll>& prM , const ll& D , const ll& Base , const list<ll>& pfB , const list<ll>& peB , bool& not_overflow , const ll& N ) { list<ll> answer_memory{}; for( ll i = 0 ; i <= Base ; i++ ){ answer_memory.push_back( M ); Triangle( M , prM , D , Base , pfB , peB , not_overflow ); } answer_memory.push_back( M ); bool not_found = true; // 後述する理由でnumの初期化は不要だがコンパイル時に警告が出るので初期化する。 ll first_occurrence = 0; auto itr = answer_memory.begin(); for( ll i = 0 ; i < Base && not_found ; i++ ){ if( *itr == M ){ not_found = false; first_occurrence = i; } else { itr++; } } // [0]から[Base]までにはBase + 1成分あるので、鳩の巣原理からそこに必ずループが含まれる。 // 従って[Base + 1]は[0]から[Base - 1]までに必ず出現する。 // すなわちfirst_occurrence < Baseとなり、period > 1となる。 const ll period = Base + 1 - first_occurrence; const ll d = ( N - first_occurrence ) % period; for( ll i = 0 ; i < d ; i++ ){ itr++; } M = *itr; return; }