結果
| 問題 |
No.2324 Two Countries within UEC
|
| ユーザー |
|
| 提出日時 | 2023-05-28 13:56:51 |
| 言語 | C++17 (gcc 13.3.0 + boost 1.87.0) |
| 結果 |
WA
|
| 実行時間 | - |
| コード長 | 3,434 bytes |
| コンパイル時間 | 1,883 ms |
| コンパイル使用メモリ | 194,508 KB |
| 最終ジャッジ日時 | 2025-02-13 10:30:25 |
|
ジャッジサーバーID (参考情報) |
judge5 / judge1 |
(要ログイン)
| ファイルパターン | 結果 |
|---|---|
| sample | AC * 2 |
| other | AC * 30 WA * 11 |
ソースコード
#include <bits/stdc++.h>
using std::cin;
using std::cout;
using std::endl;
using ll = long long;
std::mt19937 rnd(std::chrono::steady_clock::now().time_since_epoch().count());
template <class T> inline bool chmax(T &a, T b) {
if (a < b) {
a = b;
return 1;
}
return 0;
}
template <class T> inline bool chmin(T &a, T b) {
if (a > b) {
a = b;
return 1;
}
return 0;
}
const int inf = (int)1e9 + 7;
const long long INF = 1LL << 62;
template <int mod> struct ModInt {
int x;
ModInt() : x(0) {}
ModInt(int64_t y) : x(y >= 0 ? y % mod : (mod - (-y) % mod) % mod) {}
ModInt &operator+=(const ModInt &p) {
if ((x += p.x) >= mod)
x -= mod;
return *this;
}
ModInt &operator-=(const ModInt &p) {
if ((x += mod - p.x) >= mod)
x -= mod;
return *this;
}
ModInt &operator*=(const ModInt &p) {
x = (int)(1LL * x * p.x % mod);
return *this;
}
ModInt &operator/=(const ModInt &p) {
*this *= p.inverse();
return *this;
}
ModInt operator-() const { return ModInt(-x); }
ModInt operator+(const ModInt &p) const { return ModInt(*this) += p; }
ModInt operator-(const ModInt &p) const { return ModInt(*this) -= p; }
ModInt operator*(const ModInt &p) const { return ModInt(*this) *= p; }
ModInt operator/(const ModInt &p) const { return ModInt(*this) /= p; }
bool operator==(const ModInt &p) const { return x == p.x; }
bool operator!=(const ModInt &p) const { return x != p.x; }
ModInt inverse() const {
int a = x, b = mod, u = 1, v = 0, t;
while (b > 0) {
t = a / b;
std::swap(a -= t * b, b);
std::swap(u -= t * v, v);
}
return ModInt(u);
}
ModInt pow(int64_t n) const {
ModInt ret(1), mul(x);
while (n > 0) {
if (n & 1)
ret *= mul;
mul *= mul;
n >>= 1;
}
return ret;
}
friend std::ostream &operator<<(std::ostream &os, const ModInt &p) { return os << p.x; }
friend std::istream &operator>>(std::istream &is, ModInt &a) {
int64_t t;
is >> t;
a = ModInt<mod>(t);
return (is);
}
static int get_mod() { return mod; }
};
constexpr int mod = (int)1e9 + 7;
using mint = ModInt<mod>;
ll power(ll x, ll n, ll p) {
if (n == 0) {
return 1 % p;
}
if (n % 2 == 0) {
return power(x * x % p, n / 2, p);
} else {
return x * power(x, n - 1, p) % p;
}
}
void solve() {
ll n, m, P, Q;
cin >> n >> m >> P >> Q;
while (Q--) {
ll x, f;
cin >> x >> f;
x %= P;
if (f == 0) {
if (x == 0) {
cout << m << "\n";
} else {
cout << m / P << "\n";
}
continue;
}
ll y = f * power(x, P - 2, P) % P;
if (y > m) {
cout << 0 << "\n";
} else if (y != 0)
cout << (m - y) / P + 1 << "\n";
else
cout << m / P << "\n";
}
}
int main() {
std::cin.tie(nullptr);
std::ios::sync_with_stdio(false);
int I_love_KKT89 = 1;
// cin >> I_love_KKT89;
for (int Case = 1; Case <= I_love_KKT89; ++Case) {
// cout << "Case #" << Case << ": ";
solve();
}
return 0;
}