結果
問題 | No.644 G L C C D M |
ユーザー | Lepton_s |
提出日時 | 2018-02-02 22:40:47 |
言語 | C++17 (gcc 12.3.0 + boost 1.83.0) |
結果 |
AC
|
実行時間 | 271 ms / 2,000 ms |
コード長 | 3,056 bytes |
コンパイル時間 | 1,056 ms |
コンパイル使用メモリ | 118,000 KB |
実行使用メモリ | 6,944 KB |
最終ジャッジ日時 | 2024-06-10 01:25:55 |
合計ジャッジ時間 | 2,355 ms |
ジャッジサーバーID (参考情報) |
judge1 / judge4 |
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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
6,816 KB |
testcase_01 | AC | 2 ms
6,940 KB |
testcase_02 | AC | 2 ms
6,944 KB |
testcase_03 | AC | 2 ms
6,944 KB |
testcase_04 | AC | 2 ms
6,944 KB |
testcase_05 | AC | 2 ms
6,940 KB |
testcase_06 | AC | 2 ms
6,940 KB |
testcase_07 | AC | 2 ms
6,944 KB |
testcase_08 | AC | 2 ms
6,940 KB |
testcase_09 | AC | 2 ms
6,940 KB |
testcase_10 | AC | 2 ms
6,940 KB |
testcase_11 | AC | 3 ms
6,944 KB |
testcase_12 | AC | 2 ms
6,944 KB |
testcase_13 | AC | 11 ms
6,944 KB |
testcase_14 | AC | 2 ms
6,940 KB |
testcase_15 | AC | 2 ms
6,944 KB |
testcase_16 | AC | 2 ms
6,940 KB |
testcase_17 | AC | 2 ms
6,940 KB |
testcase_18 | AC | 3 ms
6,940 KB |
testcase_19 | AC | 2 ms
6,944 KB |
testcase_20 | AC | 2 ms
6,944 KB |
testcase_21 | AC | 2 ms
6,944 KB |
testcase_22 | AC | 271 ms
6,940 KB |
testcase_23 | AC | 103 ms
6,940 KB |
testcase_24 | AC | 59 ms
6,944 KB |
testcase_25 | AC | 3 ms
6,940 KB |
testcase_26 | AC | 4 ms
6,940 KB |
ソースコード
#include <algorithm> #include <climits> #include <cmath> #include <cstdio> #include <cstdlib> #include <ctime> #include <iostream> #include <sstream> #include <functional> #include <map> #include <set> #include <unordered_map> #include <unordered_set> #include <bitset> #include <string> #include <cstring> #include <vector> #include <queue> #include <stack> #include <deque> #include <list> #include <numeric> using namespace std; typedef long long ll; typedef unsigned long long ull; typedef long double ld; typedef pair<ll,ll> P; typedef pair<P,ll> PPI; typedef pair<ll,P> PIP; typedef vector<ll> vl; typedef vector<vl> vvl; typedef vector<P> vp; #define PQ(T) priority_queue<T,vector<T>,greater<T>> #define PQ2(T) priority_queue<T> const double PI = 3.14159265358979323846; const double EPS = 1e-12; const ll INF = 1LL<<29; const ll mod = 1e9+7; #define REP(i,a,b) for(ll (i)=a;(i)<(ll)(b);++(i)) #define rep(i,n) REP(i,0,n) #define rep1(i,n) REP(i,1,n+1) #define repd(i,n,d) for(ll (i)=0;(i)<(ll)(n);(i)+=(d)) #define all(v) (v).begin(), (v).end() #define pb(x) push_back(x) #define mp(x,y) make_pair((x),(y)) #define mset(m,v) memset((m),(v),sizeof(m)) #define chmin(x,y) ((x)=min((x),(y))) #define chmax(x,y) ((x)=max((x),(y))) #define fst first #define snd second #define UNIQUE(x) (x).erase(unique(all(x)),(x).end()) #define DEBUG(x) cerr<<"line ("<<__LINE__<<") "<<#x<<": "<<x<<endl; template<class T> ostream &operator<<(ostream &os, const vector<T> &v){int n=v.size();rep(i,n)os<<v[i]<<(i==n-1?"":" ");return os;} #define N 110000 ll fact[N], d[N], e[N], p[N]; bool isPrime(ll x){ if(x<=1) return false; for(ll i = 2; i*i<=x; i++) if(x%i==0) return false; return true; } ll rec(ll x, ll n, ll t){ //if(x==6) cerr<<x<<" "<<" "<<t<<endl; if(d[x]) return d[x]; if(x==1) return 0; ll x2 = x; d[x] = n/x*t; for(ll i = 2; i*i <= x2; i++){ if(x2%i) continue; x2 /= i; d[x] += rec(x/i, n, -t); } if(x2) d[x] += rec(x/x2, n, -t); return d[x]; } ll solve(ll x, ll n){ ll y = 1, t = -1; for(ll i = 2; i*i <= x; i++){ if(!(x%i)){ y *= i; t *= -1; while(!(x%i)) x /= i; } } if(x>1){ y *= x; t *= -1; } ll res = 0; if(y==1) return 1; for(ll i = 1; i*i <= y; i++){ if(y%i) continue; if(i>1) res += n/i*e[i]; if(i*i!=y) res += n/(y/i)*e[y/i]; } return res; } int main(){ ll n, m; cin>>n>>m; fact[0] = 1; rep(i, n) fact[i+1] = fact[i]*(i+1)%mod; ll res = 0; /*for(ll i = m; i <= n; i+=m){ ll n2 = n/m, i2 = i/m; //cerr<<n2<<" "<<i2<<" "<<(n2-n2/i2)<<endl; ll t = n2-n2/i2; if(i2==1) t = n2-1; (res+=t*fact[n-2])%=mod; }*/ ll n2 = n/m; for(ll i = 2; i <= n2; i++){ if(p[i]) continue; e[i] = 1; for(ll j = i*2; j <= n2; j+=i){ if(e[j/i]) e[j] = -e[j/i]; p[j] = 1; } } ll cnt = 0; for(ll i = 1; i <= n2; i++){ ll t = solve(i, n2); cnt += t; //cerr<<i<<" "<<t<<endl; //cnt += solve(i, n2); //cerr<<cnt<<endl; //if(isPrime(i)) cnt += n2/i; } res = max(0LL, (n2*n2-cnt))%mod*fact[n-2]%mod; cout<<res<<endl; //rep(i, 20) cerr<<i<<": "<<e[i]<<endl; return 0; }