結果
問題 | No.644 G L C C D M |
ユーザー | paruki |
提出日時 | 2018-02-02 23:26:01 |
言語 | C++14 (gcc 12.3.0 + boost 1.83.0) |
結果 |
AC
|
実行時間 | 43 ms / 2,000 ms |
コード長 | 4,028 bytes |
コンパイル時間 | 1,725 ms |
コンパイル使用メモリ | 173,080 KB |
実行使用メモリ | 5,376 KB |
最終ジャッジ日時 | 2024-06-10 01:34:28 |
合計ジャッジ時間 | 2,262 ms |
ジャッジサーバーID (参考情報) |
judge1 / judge5 |
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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 | 2 ms
5,376 KB |
testcase_03 | AC | 1 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 | 1 ms
5,376 KB |
testcase_08 | AC | 2 ms
5,376 KB |
testcase_09 | AC | 2 ms
5,376 KB |
testcase_10 | AC | 1 ms
5,376 KB |
testcase_11 | AC | 1 ms
5,376 KB |
testcase_12 | AC | 1 ms
5,376 KB |
testcase_13 | AC | 4 ms
5,376 KB |
testcase_14 | AC | 2 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 | AC | 3 ms
5,376 KB |
testcase_19 | AC | 2 ms
5,376 KB |
testcase_20 | AC | 2 ms
5,376 KB |
testcase_21 | AC | 2 ms
5,376 KB |
testcase_22 | AC | 43 ms
5,376 KB |
testcase_23 | AC | 20 ms
5,376 KB |
testcase_24 | AC | 14 ms
5,376 KB |
testcase_25 | AC | 3 ms
5,376 KB |
testcase_26 | AC | 3 ms
5,376 KB |
ソースコード
#define _USE_MATH_DEFINES #include "bits/stdc++.h" using namespace std; #define FOR(i,j,k) for(int (i)=(j);(i)<(int)(k);++(i)) #define rep(i,j) FOR(i,0,j) #define each(x,y) for(auto &(x):(y)) #define mp make_pair #define MT make_tuple #define all(x) (x).begin(),(x).end() #define debug(x) cout<<#x<<": "<<(x)<<endl #define smax(x,y) (x)=max((x),(y)) #define smin(x,y) (x)=min((x),(y)) #define MEM(x,y) memset((x),(y),sizeof (x)) #define sz(x) (int)(x).size() #define RT return #define vv(a,b,c,d) vector<vector<a> >(b,vector<a>(c,d)) #define vvv(a,b,c,d,e) vector<vector<vector<a> > >(b,vv(a,c,d,e)) using ll = long long; using pii = pair<int, int>; using vi = vector<int>; using vll = vector<ll>; long long gcd(long long a, long long b) { return b ? gcd(b, a%b) : a; } long long lcm(long long a, long long b) { return a*b / gcd(a, b); } template<int MOD> class ModInt { public: ModInt() :value(0) {} ModInt(long long val) :value((int)(val<0 ? MOD + val%MOD : val%MOD)) { } ModInt& operator+=(ModInt that) { value = value + that.value; if (value >= MOD)value -= MOD; return *this; } ModInt& operator-=(ModInt that) { value -= that.value; if (value<0)value += MOD; return *this; } ModInt& operator*=(ModInt that) { value = (int)((long long)value * that.value % MOD); return *this; } ModInt &operator/=(ModInt that) { return *this *= that.inverse(); } ModInt operator+(ModInt that) const { return ModInt(*this) += that; } ModInt operator-(ModInt that) const { return ModInt(*this) -= that; } ModInt operator*(ModInt that) const { return ModInt(*this) *= that; } ModInt operator/(ModInt that) const { return ModInt(*this) /= that; } ModInt pow(long long k) const { if (value == 0)return 0; ModInt n = *this, res = 1; while (k) { if (k & 1)res *= n; n *= n; k >>= 1; } return res; } ModInt inverse() const { long long a = value, b = MOD, u = 1, v = 0; while (b) { long long t = a / b; a -= t * b; swap(a, b); u -= t * v; swap(u, v); } return ModInt(u); } int toi() const { return value; } private: int value; }; typedef ModInt<1000000007> mint; ostream& operator<<(ostream& os, const mint& x) { os << x.toi(); return os; } int bitcnt(unsigned int x) { x = (x & 0x55555555) + (x >> 1 & 0x55555555); x = (x & 0x33333333) + (x >> 2 & 0x33333333); x = (x & 0x0f0f0f0f) + (x >> 4 & 0x0f0f0f0f); x = (x & 0x00ff00ff) + (x >> 8 & 0x00ff00ff); x = (x & 0x0000ffff) + (x >> 16 & 0x0000ffff); return (int)x; } template<class Val> vector<Val> enumPrimeFactors(Val n) { vector<Val> res; for (int i = 2; (long long)i*i <= n; ++i) { int flag = 0; while (n%i == 0) { flag = 1; n /= i; } if (flag)res.push_back(i); } if (n != 1)res.push_back(n); return res; } int main() { ios::sync_with_stdio(false); cin.tie(0); cout << fixed << setprecision(20); int N, M; cin >> N >> M; vi cnt(N + 1); mint ans = 0; mint A = 1; for (int i = 1; i <= N - 2; ++i)A *= i; for (int i = 1; i <= N; ++i) { if (i%M != 0)continue; int pp = 1; int x = i / M; vi ps = enumPrimeFactors<int>(x); int num = sz(ps); if (num == 0) { ans += A*cnt[1] * 2; cnt[1]++; continue; } int paired = 0; rep(S, 1 << num) { int val = 1; rep(j, num)if (S >> j & 1)val *= ps[j]; if (bitcnt(S) & 1) { paired -= cnt[val]; } else { paired += cnt[val]; } cnt[val]++; } ans += A*paired * 2; } cout << ans << endl; }