結果
| 問題 |
No.557 点対称
|
| ユーザー |
|
| 提出日時 | 2017-09-11 10:01:36 |
| 言語 | C++14 (gcc 13.3.0 + boost 1.87.0) |
| 結果 |
AC
|
| 実行時間 | 2 ms / 2,000 ms |
| コード長 | 2,569 bytes |
| コンパイル時間 | 1,461 ms |
| コンパイル使用メモリ | 166,468 KB |
| 実行使用メモリ | 5,248 KB |
| 最終ジャッジ日時 | 2024-11-07 16:50:40 |
| 合計ジャッジ時間 | 2,583 ms |
|
ジャッジサーバーID (参考情報) |
judge3 / judge5 |
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| ファイルパターン | 結果 |
|---|---|
| other | AC * 30 |
ソースコード
#include "bits/stdc++.h"
using namespace std;
#define FOR(i,j,k) for(int (i)=(j);(i)<(int)(k);++(i))
#define rep(i,j) FOR(i,0,j)
#define each(x,y) for(auto &(x):(y))
#define mp make_pair
#define MT make_tuple
#define all(x) (x).begin(),(x).end()
#define debug(x) cout<<#x<<": "<<(x)<<endl
#define smax(x,y) (x)=max((x),(y))
#define smin(x,y) (x)=min((x),(y))
#define MEM(x,y) memset((x),(y),sizeof (x))
#define sz(x) (int)(x).size()
#define rt return
using dbl = double;
using ll = long long;
using pii = pair<int, int>;
using vi = vector<int>;
using vll = vector<ll>;
template<int MOD>
class ModInt {
public:
ModInt() :value(0) {}
ModInt(long long val) :value((int)(val<0 ? MOD + val%MOD : val%MOD)) { }
ModInt& operator+=(ModInt that) {
value = value + that.value;
if (value >= MOD)value -= MOD;
return *this;
}
ModInt& operator-=(ModInt that) {
value -= that.value;
if (value<0)value += MOD;
return *this;
}
ModInt& operator*=(ModInt that) {
value = (int)((long long)value * that.value % MOD);
return *this;
}
ModInt &operator/=(ModInt that) {
return *this *= that.inverse();
}
ModInt operator+(ModInt that) const {
return ModInt(*this) += that;
}
ModInt operator-(ModInt that) const {
return ModInt(*this) -= that;
}
ModInt operator*(ModInt that) const {
return ModInt(*this) *= that;
}
ModInt operator/(ModInt that) const {
return ModInt(*this) /= that;
}
ModInt pow(long long k) const {
if (value == 0)return 0;
ModInt n = *this, res = 1;
while (k) {
if (k & 1)res *= n;
n *= n;
k >>= 1;
}
return res;
}
ModInt inverse() const {
long long a = value, b = MOD, u = 1, v = 0;
while (b) {
long long t = a / b;
a -= t * b;
swap(a, b);
u -= t * v;
swap(u, v);
}
return ModInt(u);
}
int toi() const { return value; }
private:
int value;
};
typedef ModInt<1000000007> mint;
ostream& operator<<(ostream& os, const mint& x) {
os << x.toi();
return os;
}
// 1,8
// 0
// 6, 9
int main(){
ios::sync_with_stdio(false);
cin.tie(0);
ll N;
cin >> N;
mint ans;
if (N == 1) {
ans = 2;
} else if (N % 2 == 0) { // even
ans = mint(5).pow((N - 2) / 2) * 4;
}else { // odd
ans = mint(5).pow((N-3) / 2) * 4 * 3;
}
cout << ans << endl;
}