結果
| 問題 |
No.849 yuki国の分割統治
|
| コンテスト | |
| ユーザー |
|
| 提出日時 | 2024-06-21 12:08:54 |
| 言語 | C++23 (gcc 13.3.0 + boost 1.87.0) |
| 結果 |
WA
|
| 実行時間 | - |
| コード長 | 3,152 bytes |
| コンパイル時間 | 2,081 ms |
| コンパイル使用メモリ | 151,636 KB |
| 実行使用メモリ | 9,600 KB |
| 最終ジャッジ日時 | 2024-06-21 12:09:01 |
| 合計ジャッジ時間 | 6,948 ms |
|
ジャッジサーバーID (参考情報) |
judge5 / judge2 |
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| ファイルパターン | 結果 |
|---|---|
| sample | AC * 4 |
| other | AC * 21 WA * 5 |
ソースコード
#include <algorithm>
#include <cassert>
#include <cstdio>
#include <cstdlib>
#include <cstring>
#include <cmath>
#include <iostream>
#include <numeric>
#include <vector>
#include <map>
#include <set>
#include <queue>
#include <functional>
#include <iomanip>
using namespace std;
using ll = long long;
class range {private: struct I{int x;int operator*(){return x;}bool operator!=(I& lhs){return x<lhs.x;}void operator++(){++x;}};I i,n;
public:range(int n_):i({0}),n({n_}){}range(int i_,int n_):i({i_}),n({n_}){}I& begin(){return i;}I& end(){return n;}};
template<typename T, typename U> ostream& operator<<(ostream& os, const pair<T, U>& p){ return os << "{" << p.first << ", " << p.second << "}"; }
template<typename T> ostream& operator<<(ostream& os, const vector<T>& obj) { os << "{"; for (const auto& e : obj) os << e << ", "; return os << "}"; }
template<typename T> ostream& operator<<(ostream& os, const set<T>& obj) { os << "set{"; for (const auto& e : obj) os << e << ", "; return os << "}"; }
template<typename T, typename U> ostream& operator<<(ostream& os, const map<T, U>& obj) { os << "map{"; for (const auto& e : obj) os << e << ", "; return os << "}"; }
#ifdef ONLINE_JUDGE
#define dump(expr) ;
#else
#define dump(expr) { cerr << "\033[33m#L" << __LINE__ << ": " << expr << "\033[39m" << endl; }
#endif
ll extgcd(ll a, ll b, ll &x, ll &y) {
ll g = a;
x = 1;
y = 0;
if (b != 0)
g = extgcd(b, a % b, y, x), y -= (a / b) * x;
return g;
}
namespace solver {
ll a, b, c, d;
ll n;
vector<ll> xs, ys;
void read() {
cin >> a >> b >> c >> d;
cin >> n;
xs.resize(n);
ys.resize(n);
for (int i : range(n)) cin >> xs[i] >> ys[i];
}
void experiment() {
set<pair<ll, ll>> st;
dump(a)
dump(b)
dump(c)
dump(d)
for (ll s : range(-100, 100))
for (ll t : range(-100, 100)) {
ll x = a * s + c * t;
ll y = b * s + d * t;
if (x >= 0 && y >= 0 && x <= 15 && y <= 15) st.insert({x, y});
}
cout << st << endl;
}
using RetType = ll;
RetType run() {
ll A = abs(a * d - b * c);
ll gx = gcd(a, c);
ll gy = gcd(b, d);
set<pair<int, int>> st;
dump("A " << A);
if (A == 0) {
if (gx) a /= gx;
if (gy) b /= gy;
if (a == 0) {
for (int i : range(n)) st.insert({xs[i], ys[i] % b});
} else {
for (int i : range(n)) {
ll x = xs[i], y = ys[i];
ll m = x / a;
x -= m * a;
y -= m * b;
st.insert({x, y});
}
}
return st.size();
}
ll h = gy;
ll w = A / gy;
ll s0, t0;
extgcd(b, d, s0, t0);
ll u = a * s0 + c * t0;
for (int i : range(n)) {
ll x = xs[i], y = ys[i];
ll m = y / gy;
x -= m * u;
y -= m * h;
x = ((x % w) + w) % w;
st.insert({x, y});
}
return st.size();
}
} // namespace
template <typename F>
void run(F f) { if constexpr (std::is_same_v<decltype(f()), void>) f(); else cout << f() << endl; }
int main(int argc, char** argv) {
cerr << fixed << setprecision(12);
cout << fixed << setprecision(12);
int testcase = 1;
if (argc > 1) testcase = atoi(argv[1]);
while (testcase--) {
solver::read();
}
// solver::experiment();
run(solver::run);
}