結果
問題 | No.187 中華風 (Hard) |
ユーザー | pekempey |
提出日時 | 2015-10-01 08:59:00 |
言語 | C++11 (gcc 11.4.0) |
結果 |
AC
|
実行時間 | 471 ms / 3,000 ms |
コード長 | 3,402 bytes |
コンパイル時間 | 1,691 ms |
コンパイル使用メモリ | 180,364 KB |
実行使用メモリ | 5,376 KB |
最終ジャッジ日時 | 2024-07-19 18:50:59 |
合計ジャッジ時間 | 8,326 ms |
ジャッジサーバーID (参考情報) |
judge4 / 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 | 225 ms
5,376 KB |
testcase_03 | AC | 222 ms
5,376 KB |
testcase_04 | AC | 358 ms
5,376 KB |
testcase_05 | AC | 349 ms
5,376 KB |
testcase_06 | AC | 353 ms
5,376 KB |
testcase_07 | AC | 356 ms
5,376 KB |
testcase_08 | AC | 471 ms
5,376 KB |
testcase_09 | AC | 470 ms
5,376 KB |
testcase_10 | AC | 471 ms
5,376 KB |
testcase_11 | AC | 351 ms
5,376 KB |
testcase_12 | AC | 357 ms
5,376 KB |
testcase_13 | AC | 315 ms
5,376 KB |
testcase_14 | AC | 272 ms
5,376 KB |
testcase_15 | AC | 216 ms
5,376 KB |
testcase_16 | AC | 218 ms
5,376 KB |
testcase_17 | AC | 2 ms
5,376 KB |
testcase_18 | AC | 2 ms
5,376 KB |
testcase_19 | AC | 2 ms
5,376 KB |
testcase_20 | AC | 288 ms
5,376 KB |
testcase_21 | AC | 2 ms
5,376 KB |
testcase_22 | AC | 353 ms
5,376 KB |
testcase_23 | AC | 2 ms
5,376 KB |
testcase_24 | AC | 2 ms
5,376 KB |
ソースコード
#include <bits/stdc++.h> #define GET_MACRO(a, b, c, NAME, ...) NAME #define rep(...) GET_MACRO(__VA_ARGS__, rep3, rep2)(__VA_ARGS__) #define rep2(i, a) rep3 (i, 0, a) #define rep3(i, a, b) for (int i = (a); i < (b); i++) #define repr(...) GET_MACRO(__VA_ARGS__, repr3, repr2)(__VA_ARGS__) #define repr2(i, a) repr3 (i, 0, a) #define repr3(i, a, b) for (int i = (b) - 1; i >= (a); i--) #define chmin(a, b) ((b) < a && (a = (b), true)) #define chmax(a, b) (a < (b) && (a = (b), true)) using namespace std; typedef long long ll; pair<ll, ll> extgcd(ll a, ll b) { if (b == 0) return make_pair(1, 0); auto p = extgcd(b, a % b); return make_pair(p.second, p.first - a / b * p.second); } ll modulo(ll a, ll mod) { a %= mod; a += mod; a %= mod; return a; } ll modpow(ll a, ll b, ll mod) { ll res = 1; while (b) { if (b & 1) (res *= a) %= mod; (a *= a) %= mod; b /= 2; } return res; } ll modinv(ll a, ll mod) { return modulo(extgcd(a, mod).first, mod); } ll garner(vector<pair<ll, ll>> eq, ll mod) { eq.emplace_back(0, mod); int n = eq.size(); vector<ll> coef(n, 1), sum(n, 0); rep (i, n - 1) { ll v = (eq[i].first - sum[i]) * modinv(coef[i], eq[i].second) % eq[i].second; if (v < 0) v += eq[i].second; rep (j, i + 1, n) { (sum[j] += coef[j] * v) %= eq[j].second; (coef[j] *= eq[i].second) %= eq[j].second; } } return sum.back(); } map<ll, ll> primefactor(ll n) { map<ll, ll> res; for (ll i = 2; i * i <= n; i++) { while (n % i == 0) { res[i]++; n /= i; } } if (n != 1) res[n]++; return res; } bool check(vector<pair<ll, ll>> eq) { rep (i, eq.size()) { rep (j, i + 1, eq.size()) { ll a1 = eq[i].first; ll a2 = eq[j].first; ll m1 = eq[i].second; ll m2 = eq[j].second; ll g = __gcd(m1, m2); ll l = m1 / g * m2; if ((a2 - a1) % g != 0) return false; } } return true; } vector<pair<ll, ll>> normalize(vector<pair<ll, ll>> eq) { vector<map<ll, ll>> pf(eq.size()); rep (i, eq.size()) { pf[i] = primefactor(eq[i].second); } map<ll, pair<ll, ll>> pnum; // prime, value, index rep (i, pf.size()) { for (auto p : pf[i]) { if (pnum[p.first].first < p.second) { pnum[p.first].first = p.second; pnum[p.first].second = i; } } } for (auto p : pnum) { rep (i, eq.size()) if (i != p.second.second) { while (eq[i].second % p.first == 0) { eq[i].second /= p.first; } eq[i].first %= eq[i].second; } } return eq; } template<class T1, class T2> ostream &operator <<(ostream &os, const pair<T1, T2> &p) { cout << "(" << p.first << ", " << p.second << ")"; return os; } int main() { int n; cin >> n; vector<pair<ll, ll>> eq(n); rep (i, n) cin >> eq[i].first >> eq[i].second; if (!check(eq)) { cout << -1 << endl; return 0; } eq = normalize(eq); const ll mod = 1e9 + 7; bool zero = true; ll prod = 1; rep (i, eq.size()) { if (eq[i].first != 0) zero = false; prod *= eq[i].second; prod %= mod; } if (zero) { cout << prod << endl; } else { ll ans = garner(eq, mod); cout << ans << endl; } return 0; }