結果
| 問題 |
No.1161 Many Powers
|
| ユーザー |
|
| 提出日時 | 2020-10-04 03:17:34 |
| 言語 | C++17 (gcc 13.3.0 + boost 1.87.0) |
| 結果 |
AC
|
| 実行時間 | 78 ms / 2,000 ms |
| コード長 | 3,247 bytes |
| コンパイル時間 | 2,384 ms |
| コンパイル使用メモリ | 193,400 KB |
| 最終ジャッジ日時 | 2025-01-15 02:17:41 |
|
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 |
|---|---|
| sample | AC * 2 |
| other | AC * 23 |
ソースコード
#include <bits/stdc++.h>
using namespace std;
/*
* @title ModInt
* @docs md/util/ModInt.md
*/
template<long long& mod> class ModInt {
public:
long long x;
constexpr ModInt():x(0) {}
constexpr ModInt(long long 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 long long y) {ModInt p(y);if((x += p.x) >= mod) x -= mod;return *this;}
ModInt &operator+=(const int y) {ModInt p(y);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 long long y) {ModInt p(y);if((x += mod - p.x) >= mod) x -= mod;return *this;}
ModInt &operator-=(const int y) {ModInt p(y);if((x += mod - p.x) >= mod) x -= mod;return *this;}
ModInt &operator*=(const ModInt &p) {x = (x * p.x % mod);return *this;}
ModInt &operator*=(const long long y) {ModInt p(y);x = (x * p.x % mod);return *this;}
ModInt &operator*=(const int y) {ModInt p(y);x = (x * p.x % mod);return *this;}
ModInt &operator^=(const ModInt &p) {x = (x ^ p.x) % mod;return *this;}
ModInt &operator^=(const long long y) {ModInt p(y);x = (x ^ p.x) % mod;return *this;}
ModInt &operator^=(const int y) {ModInt p(y);x = (x ^ p.x) % mod;return *this;}
ModInt &operator/=(const ModInt &p) {*this *= p.inv();return *this;}
ModInt &operator/=(const long long y) {ModInt p(y);*this *= p.inv();return *this;}
ModInt &operator/=(const int y) {ModInt p(y);*this *= p.inv();return *this;}
ModInt operator=(const int y) {ModInt p(y);*this = p;return *this;}
ModInt operator=(const long long y) {ModInt p(y);*this = p;return *this;}
ModInt operator-() const {return ModInt(-x); }
ModInt operator++() {x++;if(x>=mod) x-=mod;return *this;}
ModInt operator--() {x--;if(x<0) x+=mod;return *this;}
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; }
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 inv() const {int a=x,b=mod,u=1,v=0,t;while(b > 0) {t = a / b;swap(a -= t * b, b);swap(u -= t * v, v);} return ModInt(u);}
ModInt pow(long long n) const {ModInt ret(1), mul(x);for(;n > 0;mul *= mul,n >>= 1) if(n & 1) ret *= mul;return ret;}
friend ostream &operator<<(ostream &os, const ModInt &p) {return os << p.x;}
friend istream &operator>>(istream &is, ModInt &a) {long long t;is >> t;a = ModInt<mod>(t);return (is);}
};
long long mod;
using modint = ModInt<mod>;
int main() {
long long A,B,C;
cin >> A >> B >> C;
mod = C;
modint ans = 0;
array<modint,100001> cnt;
for(long long i = 1; i <= C; ++i) {
cnt[i] = modint(i).pow(B);
}
for(long long i = 1; i <= A%C; ++i) {
ans += cnt[i];
}
ans += accumulate(cnt.begin(),cnt.begin()+C,modint(0))*(A/C);
cout << ans << "\n";
return 0;
}