結果

問題 No.1259 スイッチ
ユーザー yuruhiyayuruhiya
提出日時 2020-10-17 10:36:17
言語 C++17
(gcc 12.3.0 + boost 1.83.0)
結果
WA  
実行時間 -
コード長 3,350 bytes
コンパイル時間 449 ms
コンパイル使用メモリ 49,876 KB
実行使用メモリ 4,504 KB
最終ジャッジ日時 2023-09-28 07:28:02
合計ジャッジ時間 2,990 ms
ジャッジサーバーID
(参考情報)
judge15 / judge12
このコードへのチャレンジ(β)

テストケース

テストケース表示
入力 結果 実行時間
実行使用メモリ
testcase_00 WA -
testcase_01 WA -
testcase_02 WA -
testcase_03 WA -
testcase_04 WA -
testcase_05 WA -
testcase_06 WA -
testcase_07 WA -
testcase_08 WA -
testcase_09 WA -
testcase_10 WA -
testcase_11 WA -
testcase_12 WA -
testcase_13 WA -
testcase_14 WA -
testcase_15 WA -
testcase_16 WA -
testcase_17 WA -
testcase_18 WA -
testcase_19 WA -
testcase_20 WA -
testcase_21 WA -
testcase_22 WA -
testcase_23 WA -
testcase_24 WA -
testcase_25 WA -
testcase_26 WA -
testcase_27 WA -
testcase_28 WA -
testcase_29 WA -
testcase_30 AC 7 ms
4,376 KB
testcase_31 WA -
testcase_32 WA -
testcase_33 WA -
testcase_34 WA -
testcase_35 WA -
testcase_36 WA -
testcase_37 WA -
testcase_38 WA -
testcase_39 WA -
testcase_40 WA -
testcase_41 WA -
testcase_42 WA -
testcase_43 WA -
testcase_44 WA -
testcase_45 WA -
testcase_46 WA -
testcase_47 WA -
testcase_48 AC 7 ms
4,376 KB
testcase_49 WA -
testcase_50 WA -
testcase_51 WA -
testcase_52 WA -
testcase_53 WA -
testcase_54 WA -
testcase_55 WA -
testcase_56 WA -
testcase_57 WA -
testcase_58 WA -
testcase_59 WA -
testcase_60 WA -
権限があれば一括ダウンロードができます

ソースコード

diff #

#pragma GCC optimize("O3")
#pragma GCC target("avx2")
#pragma GCC optimize("unroll-loops")
//#pragma GCC optimize ("Ofast")
#include <cstdio>
#include <vector>
using namespace std;
#define rep(i, n) for (int i = 0; i < (n); ++i)
#define FOR(i, m, n) for (int i = (m); i < (n); ++i)
#define rrep(i, n) for (int i = (n)-1; i >= 0; --i)
#define rfor(i, m, n) for (int i = (m); i >= (n); --i)
using ll = long long;

#ifdef _WIN32
#define getchar_unlocked _getchar_nolock
#define putchar_unlocked _putchar_nolock
#define fwrite_unlocked _fwrite_nolock
#define fread_unlocked _fread_nolock
#endif
#if __has_include("dump.hpp")
#include "dump.hpp"
#else
#define dump(...) ((void)0)
#endif

// #define USE_FREAD
#ifdef USE_FREAD
struct Input {
	static constexpr size_t MAX_SIZE = 4400019;
	char buf[MAX_SIZE];
	size_t i, end;
	Input() {
		i = 0;
		end = fread_unlocked(buf, 1, MAX_SIZE, stdin);
	}
	inline int gc() {
		if (i < end) {
			return buf[i++];
		} else {
			return EOF;
		}
	}
} in;
#define gc in.gc
#else
#define gc getchar_unlocked
#endif  // USE_FREAD

// #define USE_FWRITE
#ifdef USE_FWRITE
struct Output {
	static constexpr size_t MAX_SIZE = 4000009;
	char buf[MAX_SIZE];
	size_t i = 0;
	void pc(int c) {
		buf[i++] = c;
	}
	~Output() {
		fwrite_unlocked(buf, 1, i, stdout);
	}
} out;
#define pc out.pc
#else
#define pc putchar_unlocked
#endif  // USE_FWRITE

inline void ini(int& v) noexcept {
	v = 0;
	char c = gc();
	bool f = false;
	if (c == '-') {
		f = true;
		c = gc();
	}
	for (; '0' <= c && c <= '9'; c = gc())
		v = v * 10 + (c - '0');
	if (f) v = -v;
}
inline void inui(int& v) noexcept {
	v = 0;
	for (char c = gc(); '0' <= c && c <= '9'; c = gc())
		v = v * 10 + (c - '0');
}
inline void inl(ll& v) noexcept {
	v = 0;
	char c = gc();
	bool f = false;
	if (c == '-') {
		f = true;
		c = gc();
	}
	for (; '0' <= c && c <= '9'; c = gc())
		v = v * 10 + (c - '0');
	if (f) v = -v;
}
inline void inul(ll& v) noexcept {
	v = 0;
	for (char c = gc(); '0' <= c && c <= '9'; c = gc())
		v = v * 10 + (c - '0');
}
inline void ins(char* c, int n) noexcept {
	while (n--) {
		*c = gc();
		++c;
	}
}
inline void puti(int v) noexcept {
	if (v < 0) pc('-'), v = -v;
	char b[10];
	int n = 0;
	while (v)
		b[n++] = '0' + v % 10, v /= 10;
	if (!n) b[n++] = '0';
	while (n--)
		pc(b[n]);
}
inline void putui(int v) noexcept {
	char b[10];
	int n = 0;
	while (v)
		b[n++] = '0' + v % 10, v /= 10;
	if (!n) b[n++] = '0';
	while (n--)
		pc(b[n]);
}
inline void putl(ll v) noexcept {
	if (v < 0) pc('-'), v = -v;
	char b[20];
	int n = 0;
	while (v)
		b[n++] = '0' + v % 10, v /= 10;
	if (!n) b[n++] = '0';
	while (n--)
		pc(b[n]);
}
inline void putul(ll v) noexcept {
	char b[20];
	int n = 0;
	while (v)
		b[n++] = '0' + v % 10, v /= 10;
	if (!n) b[n++] = '0';
	while (n--)
		pc(b[n]);
}

// ---------------------------------------------------------------- //

constexpr ll MOD = 1000000007;

inline ll Powmod(ll a, ll n) {
	ll r = 1;
	while (n > 0) {
		if (n & 1)
			r = r * a % MOD, n--;
		else
			a = a * a % MOD, n >>= 1;
	}
	return r;
}

int main() {
	ll n, m, k;
	inul(n);
	inul(m);
	inul(k);

	ll acc = 1, x = 0;
	FOR(i, 1, n + 1) {
		if (k % i == 0) {
			x = (x + acc * Powmod(n, n - i)) % MOD;
		}
		acc = (acc * (n - i)) % MOD;
	}
	if (m == 1) {
		putul(x);
	} else {
		putul((Powmod(n, n) - x) * Powmod(n - 1, MOD - 2) % MOD);
	}
	pc('\n');
}
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