結果
問題 | No.1262 グラフを作ろう! |
ユーザー | sak |
提出日時 | 2020-11-28 19:08:24 |
言語 | C++17 (gcc 12.3.0 + boost 1.83.0) |
結果 |
WA
|
実行時間 | - |
コード長 | 2,777 bytes |
コンパイル時間 | 2,387 ms |
コンパイル使用メモリ | 212,744 KB |
実行使用メモリ | 34,652 KB |
最終ジャッジ日時 | 2024-09-12 23:25:16 |
合計ジャッジ時間 | 41,121 ms |
ジャッジサーバーID (参考情報) |
judge2 / 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 |
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testcase_00 | WA | - |
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testcase_93 | AC | 441 ms
34,608 KB |
testcase_94 | AC | 528 ms
34,512 KB |
testcase_95 | WA | - |
ソースコード
#include <bits/stdc++.h> using namespace std; typedef long long ll; typedef pair<ll, ll> p_ll; template<class T> void debug(T itr1, T itr2) { auto now = itr1; while(now<itr2) { cout << *now << " "; now++; } cout << endl; } #define repr(i,from,to) for (ll i=(ll)from; i<(ll)to; i++) #define all(vec) vec.begin(), vec.end() #define rep(i,N) repr(i,0,N) #define per(i,N) for (int i=(int)N-1; i>=0; i--) const ll MOD = pow(10,9)+7; const ll LLINF = pow(2,61)-1; const int INF = pow(2,30)-1; vector<ll> fac; void c_fac(int x=pow(10,6)+10) { fac.resize(x,true); rep(i,x) fac[i] = i ? (fac[i-1]*i)%MOD : 1; } ll modpow(ll x, ll p) { ll result = 1, now = 1, pm = x; while (now<=p) { if (p&now) { result = result * pm % MOD; } now*=2; pm = pm*pm % MOD; } return result; } ll inv(ll a, ll m=MOD) { ll b = m, x = 1, y = 0; while (b!=0) { int d = a/b; a -= b*d; swap(a,b); x -= y*d; swap(x,y); } return (x+m)%m; } ll nck(ll n, ll k) { return fac[n]*inv(fac[k]*fac[n-k]%MOD)%MOD; } ll gcd(ll a, ll b) { if (a<b) swap(a,b); return b==0 ? a : gcd(b, a%b); } ll lcm(ll a, ll b) { return a/gcd(a,b)*b; } // ---------------------------------------------------------------------- // ---------------------------------------------------------------------- struct Sieve { struct num { ll f, x, n; bool operator== (const num &a) const { return f==a.f&&x==a.x&&n==a.n; }; num operator+ (const num &a) const { return (num){f+a.f,x+a.x,n+a.n}; }; }; vector<num> pfac; num p0; Sieve(ll x=pow(10,6)+10) { p0 = {-1,0,0}; pfac.resize(x,p0); for (ll i=2; i*i<=x; i++) { if (pfac[i]==p0) { for (ll j=1; i*j<=x; j++) { if (pfac[i*j]==p0) { if (j%i==0) pfac[i*j] = pfac[j] + (num){0,1,0}; else pfac[i*j] = {i,1,j}; } } } } } bool isp(ll n) { return pfac[n].f==n; } vector<p_ll> factors(ll n) { vector<p_ll> result; while (n>=2) { result.push_back(make_pair(pfac[n].f,pfac[n].x)); n=pfac[n].n; } return result; } }; // ---------------------------------------------------------------------- // ---------------------------------------------------------------------- int main() { ll N, M; cin >> N >> M; ll A[M]; rep(i,M) cin >> A[i]; // rep(i,M) { // ll result = 0; // repr(j,1,A[i]+1) result += gcd(A[i],j) - 1; // cout << result << endl; // } Sieve s; ll result = 0; rep(i,M) { vector<p_ll> factors = s.factors(A[i]); ll nowres = A[i]; // for (auto x: factors) cout << x.first << "^" << x.second << " "; cout << endl; for (auto x: factors) nowres = nowres/x.first * ((x.first-1)*(x.second+1)+1); nowres -= A[i]; // cout << nowres << endl; result += nowres; } cout << result << endl; return 0; }