結果
| 問題 |
No.1287 えぬけー
|
| コンテスト | |
| ユーザー |
|
| 提出日時 | 2020-11-13 21:42:56 |
| 言語 | C++17 (gcc 13.3.0 + boost 1.87.0) |
| 結果 |
AC
|
| 実行時間 | 63 ms / 2,000 ms |
| コード長 | 5,993 bytes |
| コンパイル時間 | 2,174 ms |
| コンパイル使用メモリ | 200,984 KB |
| 最終ジャッジ日時 | 2025-01-15 22:43:25 |
|
ジャッジサーバーID (参考情報) |
judge3 / judge1 |
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| ファイルパターン | 結果 |
|---|---|
| sample | AC * 4 |
| other | AC * 5 |
ソースコード
#include <bits/stdc++.h>
using namespace std;
#define rep(i, n) for(int i = 0; i < n; i++)
#define rep2(i, x, n) for(int i = x; i <= n; i++)
#define rep3(i, x, n) for(int i = x; i >= n; i--)
#define each(e, v) for(auto &e: v)
#define pb push_back
#define eb emplace_back
#define all(x) x.begin(), x.end()
#define rall(x) x.rbegin(), x.rend()
#define sz(x) (int)x.size()
using ll = long long;
using pii = pair<int, int>;
using pil = pair<int, ll>;
using pli = pair<ll, int>;
using pll = pair<ll, ll>;
#define pq(type, name) priority_queue<type> name
#define iq(type, name) priority_queue<type, vector<type>, greater<type>> name
const int inf = (1<<30)-1;
const ll INF = (1LL<<60)-1;
const double pi = acos(-1.0);
const double EPS = 1e-10;
template<typename T> bool chmax(T &x, const T &y){
if(x < y) {x = y; return true;}
return false;
}
template<typename T> bool chmin(T &x, const T &y){
if(x > y) {x = y; return true;}
return false;
}
void in() {}
template<typename Head, typename ...Tail> void in(Head &&head, Tail &&...tail){
cin >> head;
in(forward<Tail>(tail)...);
}
void out() {cout << '\n';}
template<typename Head, typename ...Tail> void out(Head &&head, Tail &&...tail){
cout << head << ' ';
out(forward<Tail>(tail)...);
}
void outn() {}
template<typename Head, typename ...Tail> void outn(Head &&head, Tail &&...tail){
cout << head << '\n';
outn(forward<Tail>(tail)...);
}
template<typename T, typename U> void in(pair<T, U> &p){
cin >> p.first >> p.second;
}
template<typename T, typename U> void out(pair<T, U> p){
cout << p.first << ' ' << p.second << '\n';
}
using vi = vector<int>;
using vll = vector<ll>;
#define vec1(type, name, ...) vector<type> name(__VA_ARGS__)
#define VEC1(type, ...) vector<type>(__VA_ARGS__)
#define vec2(type, name, a, ...) vector<vector<type>> name(a, VEC1(type, __VA_ARGS__))
#define VEC2(type, a, ...) vector<vector<type>>(a, VEC1(type, __VA_ARGS__))
#define vec3(type, name, a, b, ...) vector<vector<vector<type>>> name(a, VEC2(type, b, __VA_ARGS__))
#define VEC3(type, a, b, ...) vector<vector<vector<type>>>(a, VEC2(type, b, __VA_ARGS__))
#define vec4(type, name, a, b, c, ...) vector<vector<vector<vector<type>>>> name(a, VEC3(type, b, c, __VA_ARGS__))
#define VEC4(type, a, b, c, ...) vector<vector<vector<vector<type>>>>(a, VEC3(type, b, c, __VA_ARGS__))
#define vec5(type, name, a, b, c, d, ...) vector<vector<vector<vector<vector<type>>>>> name(a, VEC4(type, b, c, d, __VA_ARGS__))
#define VEC5(type, a, b, c, d, ...) vector<vector<vector<vector<vector<type>>>>>(a, VEC4(type, b, c, d, __VA_ARGS__))
template<typename T> void vin(vector<T> &a){
rep(i, sz(a)) cin >> a[i];
}
template<typename T> void vout(const vector<T> &a){
for(auto &e: a) cout << e << ' ';
cout << '\n';
}
template<typename T> void voutn(const vector<T> &a){
for(auto &e: a) cout << e << '\n';
}
template<typename T> void unique(vector<T> &a){
sort(all(a)), a.erase(unique(all(a)), a.end());
}
vector<int> iota(int n){
vector<int> ret(n);
iota(all(ret), 0);
return ret;
}
template<typename T> vector<int> iota(const vector<T> &a, bool greater = false){
vector<int> ret = iota(sz(a));
sort(all(ret), [&](int i, int j){
return (a[i] < a[j])^greater;
});
return ret;
}
struct io_setup{
io_setup(){
ios_base::sync_with_stdio(false);
cin.tie(NULL);
cout << fixed << setprecision(15);
}
} io_setup;
#define VEC(type, name, n) vector<type> name(n); vin(name)
#define INT(...) int __VA_ARGS__; in(__VA_ARGS__)
#define LL(...) ll __VA_ARGS__; in(__VA_ARGS__)
#define CHAR(...) char __VA_ARGS__; in(__VA_ARGS__)
#define STR(...) string __VA_ARGS__; in(__VA_ARGS__)
#define DBL(...) double __VA_ARGS__; in(__VA_ARGS__)
const int MOD = 1000000007;
//const int MOD = 998244353;
struct Random_Number_Generator{
mt19937_64 mt;
Random_Number_Generator() : mt(chrono::steady_clock::now().time_since_epoch().count()) {}
int64_t operator () (int64_t l, int64_t r){
uniform_int_distribution<int64_t> dist(l, r-1);
return dist(mt);
}
int64_t operator () (int64_t r){
return (*this)(0, r);
}
};
ll modpow(ll x, ll n, const int &m){
ll ret = 1;
while(n){
if(n&1) ret *= x, ret %= m;
x *= x, x %= m;
n >>= 1;
}
return ret;
}
template<typename T> T Euler_Totient(T m){ //オイラーのφ関数(xとmが互いに素ならば、x^φ(m)≡1(mod m))
T ret = m;
for(T i = 2; i*i <= m; i++){
if(m%i == 0) ret /= i, ret *= i-1;
while(m%i == 0) m /= i;
}
if(m > 1) ret /= m, ret *= m-1;
return ret;
}
int modlog(const int &x, ll y, const int &m){ //x^k=y(mod m)となる最小の非負整数k(xとmは互いに素)
unordered_map<int, int> mp;
int n = 0; ll now = 1;
for(; n*n < m; n++){
if(!mp.count(now)) mp[now] = n;
now *= x, now %= m;
}
now = modpow(now, Euler_Totient(m)-1, m);
rep(i, n){
if(mp.count(y)) return n*i+mp[y];
y *= now, y %= m;
}
return -1;
}
template<typename T> T order(T x, const T &m){ //x^k=1(mod m)となる最小の正整数(xとmは互いに素)
T n = Euler_Totient(m);
vector<T> ds;
for(T i = 1; i*i <= n; i++){
if(n%i == 0) ds.pb(i), ds.pb(n/i);
}
sort(all(ds));
for(auto &e: ds){
if(modpow(x, e, m) == 1) return e;
}
return -1;
}
template<typename T> T primitive_root(T m){ //素数mの原始根
vector<T> ds;
for(T i = 1; i*i <= m-1; i++){
if((m-1)%i == 0) ds.pb(i), ds.pb((m-1)/i);
}
sort(all(ds));
Random_Number_Generator rnd;
while(true){
T r = rnd(1, m);
for(auto &e: ds){
if(e == m-1) return r;
if(modpow(r, e, m) == 1) break;
}
}
}
int main(){
INT(T);
ll m = Euler_Totient(MOD-1);
while(T--){
LL(X, K);
ll t = modpow(K, m-1, MOD-1);
out(modpow(X, t, MOD));
}
}