結果
問題 | No.125 悪の花弁 |
ユーザー | heno239 |
提出日時 | 2020-08-04 21:43:05 |
言語 | C++14 (gcc 12.3.0 + boost 1.83.0) |
結果 |
WA
|
実行時間 | - |
コード長 | 3,876 bytes |
コンパイル時間 | 1,291 ms |
コンパイル使用メモリ | 119,300 KB |
実行使用メモリ | 32,860 KB |
最終ジャッジ日時 | 2024-09-14 21:09:36 |
合計ジャッジ時間 | 2,055 ms |
ジャッジサーバーID (参考情報) |
judge6 / 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 | WA | - |
testcase_01 | AC | 54 ms
30,464 KB |
testcase_02 | AC | 54 ms
32,592 KB |
testcase_03 | WA | - |
testcase_04 | WA | - |
testcase_05 | WA | - |
ソースコード
#include<iostream> #include<string> #include<cstdio> #include<vector> #include<cmath> #include<algorithm> #include<functional> #include<iomanip> #include<queue> #include<ciso646> #include<random> #include<map> #include<set> #include<bitset> #include<stack> #include<unordered_map> #include<utility> #include<cassert> #include<complex> #include<numeric> using namespace std; //#define int long long typedef long long ll; typedef unsigned long long ul; typedef unsigned int ui; constexpr ll mod = 1000000007; const ll INF = mod * mod; typedef pair<int, int>P; #define stop char nyaa;cin>>nyaa; #define rep(i,n) for(int i=0;i<n;i++) #define per(i,n) for(int i=n-1;i>=0;i--) #define Rep(i,sta,n) for(int i=sta;i<n;i++) #define rep1(i,n) for(int i=1;i<=n;i++) #define per1(i,n) for(int i=n;i>=1;i--) #define Rep1(i,sta,n) for(int i=sta;i<=n;i++) #define all(v) (v).begin(),(v).end() typedef pair<ll, ll> LP; typedef long double ld; typedef pair<ld, ld> LDP; const ld eps = 1e-12; const ld pi = acos(-1.0); ll mod_pow(ll x, ll n, ll m) { ll res = 1; while (n) { if (n & 1)res = res * x % m; x = x * x % m; n >>= 1; } return res; } struct modint { ll n; modint() :n(0) { ; } modint(ll m) :n(m) { if (n >= mod)n %= mod; else if (n < 0)n = (n % mod + mod) % mod; } operator int() { return n; } }; bool operator==(modint a, modint b) { return a.n == b.n; } modint operator+=(modint& a, modint b) { a.n += b.n; if (a.n >= mod)a.n -= mod; return a; } modint operator-=(modint& a, modint b) { a.n -= b.n; if (a.n < 0)a.n += mod; return a; } modint operator*=(modint& a, modint b) { a.n = ((ll)a.n * b.n) % mod; return a; } modint operator+(modint a, modint b) { return a += b; } modint operator-(modint a, modint b) { return a -= b; } modint operator*(modint a, modint b) { return a *= b; } modint operator^(modint a, int n) { if (n == 0)return modint(1); modint res = (a * a) ^ (n / 2); if (n % 2)res = res * a; return res; } ll inv(ll a, ll p) { return (a == 1 ? 1 : (1 - p * inv(p % a, a)) / a + p); } modint operator/(modint a, modint b) { return a * modint(inv(b, mod)); } const int max_n = 1 << 20; modint fact[max_n], factinv[max_n]; void init_f() { fact[0] = modint(1); for (int i = 0; i < max_n - 1; i++) { fact[i + 1] = fact[i] * modint(i + 1); } factinv[max_n - 1] = modint(1) / fact[max_n - 1]; for (int i = max_n - 2; i >= 0; i--) { factinv[i] = factinv[i + 1] * modint(i + 1); } } modint comb(int a, int b) { if (a < 0 || b < 0 || a < b)return 0; return fact[a] * factinv[b] * factinv[a - b]; } int dx[4] = { 1,0,-1,0 }; int dy[4] = { 0,1,0,-1 }; const int mn = 1000000; int id[mn + 1]; bool isp[mn + 1]; void init() { fill(id, id + mn + 1, 1); fill(isp + 2, isp + mn + 1, true); for (int i = 2; i <= mn; i++) { if (!isp[i])continue; id[i] *= -1; for (int j = 2 * i; j <= mn; j += i) { isp[j] = false; id[j] *= -1; if ((j / i) % i == 0) { id[j] = 0; } } } } void solve(){ init(); int n; cin >> n; vector<int> c(n); rep(i, n)cin >> c[i]; int sum = 0; rep(i, n)sum += c[i]; modint pro = 1; int cur = sum - c[0]; rep1(i, n - 1) { pro *= comb(cur, c[i]); cur -= c[i]; } vector<int> ds; vector<modint> memo(sum + 1); modint ans = 0; for (int b = 1; b <= sum; b++) { if (sum % b)continue; int d = sum / b; bool valid = true; rep(i, n)if (c[i] % d) { valid = false; break; } if (!valid)continue; memo[b] = fact[sum / d]; rep(i, n) { memo[b] *= factinv[c[i] / d]; } for (int p : ds) { if (b % p == 0) { memo[b] += (modint)id[b / p] * memo[p]; } } ds.push_back(b); //cout << b << " " << memo[b] << "\n"; modint x = memo[b] / (modint)b; ans += x; } cout << ans << "\n"; } signed main() { ios::sync_with_stdio(false); cin.tie(0); //cout << fixed << setprecision(10); init_f(); // int t; cin >> t; rep(i, t) solve(); return 0; }