結果
問題 | No.181 A↑↑N mod M |
ユーザー | nonamae |
提出日時 | 2021-10-04 10:06:02 |
言語 | C++14 (gcc 12.3.0 + boost 1.83.0) |
結果 |
AC
|
実行時間 | 2 ms / 5,000 ms |
コード長 | 6,556 bytes |
コンパイル時間 | 673 ms |
コンパイル使用メモリ | 43,976 KB |
実行使用メモリ | 5,376 KB |
最終ジャッジ日時 | 2024-07-22 09:27:25 |
合計ジャッジ時間 | 2,015 ms |
ジャッジサーバーID (参考情報) |
judge3 / judge1 |
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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 | AC | 2 ms
5,248 KB |
testcase_01 | AC | 2 ms
5,376 KB |
testcase_02 | AC | 1 ms
5,376 KB |
testcase_03 | AC | 2 ms
5,376 KB |
testcase_04 | AC | 2 ms
5,376 KB |
testcase_05 | AC | 1 ms
5,376 KB |
testcase_06 | AC | 1 ms
5,376 KB |
testcase_07 | AC | 1 ms
5,376 KB |
testcase_08 | AC | 2 ms
5,376 KB |
testcase_09 | AC | 1 ms
5,376 KB |
testcase_10 | AC | 2 ms
5,376 KB |
testcase_11 | AC | 2 ms
5,376 KB |
testcase_12 | AC | 1 ms
5,376 KB |
testcase_13 | AC | 2 ms
5,376 KB |
testcase_14 | AC | 1 ms
5,376 KB |
testcase_15 | AC | 1 ms
5,376 KB |
testcase_16 | AC | 2 ms
5,376 KB |
testcase_17 | AC | 1 ms
5,376 KB |
testcase_18 | AC | 2 ms
5,376 KB |
testcase_19 | AC | 2 ms
5,376 KB |
testcase_20 | AC | 1 ms
5,376 KB |
testcase_21 | AC | 1 ms
5,376 KB |
testcase_22 | AC | 1 ms
5,376 KB |
testcase_23 | AC | 2 ms
5,376 KB |
testcase_24 | AC | 2 ms
5,376 KB |
testcase_25 | AC | 2 ms
5,376 KB |
testcase_26 | AC | 2 ms
5,376 KB |
testcase_27 | AC | 2 ms
5,376 KB |
testcase_28 | AC | 2 ms
5,376 KB |
testcase_29 | AC | 2 ms
5,376 KB |
testcase_30 | AC | 1 ms
5,376 KB |
testcase_31 | AC | 2 ms
5,376 KB |
testcase_32 | AC | 1 ms
5,376 KB |
testcase_33 | AC | 2 ms
5,376 KB |
testcase_34 | AC | 2 ms
5,376 KB |
testcase_35 | AC | 1 ms
5,376 KB |
testcase_36 | AC | 1 ms
5,376 KB |
testcase_37 | AC | 2 ms
5,376 KB |
testcase_38 | AC | 1 ms
5,376 KB |
testcase_39 | AC | 2 ms
5,376 KB |
testcase_40 | AC | 2 ms
5,376 KB |
testcase_41 | AC | 1 ms
5,376 KB |
testcase_42 | AC | 2 ms
5,376 KB |
ソースコード
#include <assert.h> #include <math.h> #include <stdbool.h> #include <stdint.h> #include <stdio.h> #include <stdlib.h> #include <string.h> #include <time.h> /* signed integer */ typedef int8_t i8; typedef int16_t i16; typedef int32_t i32; typedef int64_t i64; typedef __int128_t i128; /* unsigned integer */ typedef uint8_t u8; typedef uint16_t u16; typedef uint32_t u32; typedef uint64_t u64; typedef __uint128_t u128; /* floating point number */ typedef float f32; typedef double f64; typedef long double f80; typedef int FastInt; /* io */ static inline FastInt read_int(void) { FastInt c, x = 0, f = 1; while (c = getchar_unlocked(), c < 48 || c > 57) if (c == 45) f = -f; while (47 < c && c < 58) { x = x * 10 + c - 48; c = getchar_unlocked(); } return f * x; } static inline i64 in(void) { i64 c, x = 0, f = 1; while (c = getchar_unlocked(), c < 48 || c > 57) if (c == 45) f = -f; while (47 < c && c < 58) { x = x * 10 + c - 48; c = getchar_unlocked(); } return f * x; } static inline u64 inu(void) { u64 c, x = 0; while (c = getchar_unlocked(), c < 48 || c > 57); while (47 < c && c < 58) { x = x * 10 + c - 48; c = getchar_unlocked(); } return x; } static inline void write_int(FastInt x) { if (x < 0) { putchar_unlocked('-'); x = -x; } if (x >= 10) write_int(x / 10); putchar_unlocked(x - x / 10 * 10 + 48); } static inline void out(i64 x) { if (x < 0) { putchar_unlocked('-'); x = -x; } if (x >= 10) out(x / 10); putchar_unlocked(x - x / 10 * 10 + 48); } static inline void outu(u64 x) { if (x >= 10) outu(x / 10); putchar_unlocked(x - x / 10 * 10 + 48); } static inline void NL(void) { putchar_unlocked('\n'); } static inline void SP(void) { putchar_unlocked(' '); } /* MACROS */ #define POPCNT(a) __builtin_popcountll((a)) #define CTZ(a) __builtin_ctzll((a)) #define CLZ(a) __builtin_clzll((a)) #define LSBit(a) ((a)&(-(a))) #define CLSBit(a) ((a)&((a)-(1))) #define HAS_SINGLE_BIT(a) (POPCNT((a))==1) #define BIT_CEIL(a) ((!(a))?(1):((POPCNT(a))==(1)?((1ull)<<((63)-CLZ((a)))):((1ull)<<((64)-CLZ(a))))) #define BIT_FLOOR(a) ((!(a))?(0):((1ull)<<((63)-CLZ((a))))) #define BIT_WIDTH(a) ((a)?((64)-CLZ((a))):(0)) #define _ROTL(x, s) (((x)<<((s)%(64)))|(((x)>>((64)-((s)%(64)))))) #define _ROTR(x, s) (((x)>>((s)%(64)))|(((x)<<((64)-((s)%(64)))))) #define ROTL(x, s) (((s)==(0))?(0):(((s)<(0))?(_ROTR((x),-(s))):(_ROTL((x),(s))))) #define ROTR(x, s) (((s)==(0))?(0):(((s)<(0))?(_ROTL((x),-(s))):(_ROTR((x),(s))))) #define SWAP(a, b) (((a)^=(b)),((b)^=(a)),((a)^=(b))) #define MAX(a, b) ((a)>(b)?(a):(b)) #define MIN(a, b) ((a)<(b)?(a):(b)) i64 _gcd_(i64 a, i64 b) { // assert(a >= 0 && b >= 0); if (!a || !b) return a | b; FastInt shift = CTZ(a | b); a >>= CTZ(a); do { b >>= CTZ(b); if (a > b) SWAP(a, b); b -= a; } while (b); return a << shift; } i64 _lcm_(i64 a, i64 b) { // assert(a >= 0 && b >= 0); return a / _gcd_(a, b) * b; } u64 _inv(u64 mod) { FastInt i; u64 u = 1, v = 0, x = 1ULL << 63; for (i = 0; i < 64; i++) { if (u & 1) u = (u + mod) >> 1, v = (v >> 1) + x; else u >>= 1, v >>= 1; } return -v; } u64 _r2(u64 mod) { return (u128)(i128)-1 % mod + 1; } u64 _one(u64 mod) { return -1ULL % mod + 1; } u64 _MR(u128 x, u64 inv, u64 mod) { i64 z = (x >> 64) - ((((u64)x * inv) * (u128)mod) >> 64); return z < 0 ? z + mod : (u64)z; } u64 to_montgomery_form(u64 a, u64 r2, u64 inv, u64 mod) { return _MR((u128)a * r2, inv, mod); } u64 from_montgomery_form(u64 a, u64 inv, u64 mod) { return _MR((u128)a, inv, mod); } u64 mulmod_MR(u64 x, u64 y, u64 r2, u64 inv, u64 mod) { return _MR((u128)r2 * _MR((u128)x * y, inv, mod), inv, mod); } u64 powmod_MR(u64 a, u64 n, u64 r2, u64 inv, u64 mod) { u64 res = _one(mod); u64 A = to_montgomery_form(a, r2, inv, mod); while (n > 0) { if (n & 1) res = _MR((u128)res * A, inv, mod); A = _MR((u128)A * A, inv, mod); n >>= 1; } return from_montgomery_form(res, inv, mod); } bool is_prime(u64 n) { if (n <= 3) return n == 2 || n == 3; if (!(n & 1)) return false; u64 r2 = _r2(n); u64 inv = _inv(n); u64 s = CTZ(n - 1); u64 d = (n - 1) >> s; if (n < (1ull << 30)) { u64 as[] = {2,7,61}; for (FastInt i = 0; i < 3; i++) { if (_MR(as[i], inv, n) == 0) return true; u64 res = powmod_MR(as[i], d, r2, inv, n); if (res == 1) continue; bool ok = true; for (u64 r = 0; r < s; r++) { if (res == n - 1) { ok = false; break; } res = mulmod_MR(res, res, r2, inv, n); } if (ok) return false; } return true; } else { u64 as[] = {2,325,9375,28178,450775,9780504,1795265022}; for (FastInt i = 0; i < 7; i++) { if (_MR(as[i], inv, n) == 0) return true; u64 res = powmod_MR(as[i], d, r2, inv, n); if (res == 1) continue; bool ok = true; for (u64 r = 0; r < s; r++) { if (res == n - 1) { ok = false; break; } res = mulmod_MR(res, res, r2, inv, n); } if (ok) return false; } return true; } } FastInt totient(FastInt n) { if (is_prime(n)) return n - 1; else { FastInt ret = n; for (FastInt a = 2; a * a <= n; a++) { if (n % a == 0) { while (n % a == 0) n /= a; ret -= ret / a; } } if (n > 1) ret -= ret / n; return ret; } } FastInt powmod(FastInt a, FastInt n, FastInt mod) { bool state = false; if (n >= totient(mod)) state = true; FastInt r = 1; while(n) { if (n & 1) { if ((1LL * r * a) > (u64)mod) state = true; r = (1LL * r * a) % mod; } if (1LL * a * a > (u64)mod) state = true; a = (1LL * a * a) % mod; n >>= 1; } if (state) return r + mod; else return r; } FastInt tetration_sub(FastInt a, FastInt b, FastInt mod) { if (a == 0) return ~b & 1; if (a == 1 || mod == 1) return 1; if (b == 1) { if (a >= mod) return a % mod + mod; else return a; } FastInt x = tetration_sub(a, b - 1, totient(mod)); FastInt ret = powmod(a, x, mod); return ret; } FastInt tetration(FastInt a, FastInt b, FastInt mod) { FastInt ret; if (b == 0) ret = (mod == 1) ? 0 : 1; else ret = tetration_sub(a, b, mod) % mod; return ret; } void Main(void) { FastInt A = read_int(); FastInt B = read_int(); FastInt M = read_int(); FastInt ans = tetration(A, B, M); out(ans); NL(); } int main(void) { Main(); return 0; }