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#142617#6187. Digit Sum ProblemSanguineChameleonAC ✓1301ms387904kbC++204.1kb2023-08-19 14:15:412023-08-19 14:15:42

Judging History

你现在查看的是最新测评结果

  • [2023-08-19 14:15:42]
  • 评测
  • 测评结果:AC
  • 用时:1301ms
  • 内存:387904kb
  • [2023-08-19 14:15:41]
  • 提交

answer

#include <bits/stdc++.h>
using namespace std;

void just_do_it();

int main() {
	#ifdef KAMIRULEZ
		freopen("kamirulez.inp", "r", stdin);
		freopen("kamirulez.out", "w", stdout);
	#endif
	ios_base::sync_with_stdio(0);
	cin.tie(0);
	just_do_it();
	return 0;
}

const int maxK = 22;

namespace NTT {
	const long long mod = (119 << 23) + 1;

	long long bin_pow(long long x, long long y) {
		long long res = 1;
		while (y) {
			if (y & 1) {
				res = res * x % mod;
			}
			y >>= 1;
			x = x * x % mod;
		}
		return res;
	}

	long long mod_inv(long long x) {
		return bin_pow(x, mod - 2);
	}

	int maxL;
	int maxN;
	long long root;

	void fft(long long A[], bool inv) {
		for (int i = 0; i < maxN; i++) {
			int rev = 0;
			for (int j = 0; j < maxL; j++) {
				rev |= ((i >> j) & 1) << (maxL - 1 - j);
			}
			if (i < rev) {
				swap(A[i], A[rev]);
			}
		}
		for (int len = 2; len <= maxN; len <<= 1) {
			long long mul = (inv ? mod_inv(root) : root);
			for (int tmp = len; tmp < maxN; tmp <<= 1) {
				mul = mul * mul % mod;
			}
			for (int i = 0; i < maxN; i += len) {
				long long cur = 1;
				for (int j = 0; j < (len >> 1); j++) {
					long long X = A[i + j];
					long long Y = A[i + j + (len >> 1)];
					A[i + j] = (X + cur * Y) % mod;
					A[i + j + (len >> 1)] = (X + (mod - cur) * Y) % mod;
					cur = cur * mul % mod;
				}
			}
		}
		if (inv) {
			long long mul = mod_inv(maxN);
			for (int i = 0; i < maxN; i++) {
				A[i] = A[i] * mul % mod;
			}
		}
	}

	long long A[1 << maxK];
	long long B[1 << maxK];

	void mul(long long _A[], long long _B[], long long C[], int _maxL) {
		maxL = _maxL;
		maxN = (1 << maxL);
		root = bin_pow(bin_pow(3, 119), 1 << (23 - maxL));
		for (int i = 0; i < maxN; i++) {
			A[i] = _A[i];
			B[i] = _B[i];
		}
		fft(A, false);
		fft(B, false);
		for (int i = 0; i < maxN; i++) {
			C[i] = A[i] * B[i] % mod;
		}
		fft(C, true);
	}
};

const long long mod = 998244353;
const long long maxN = 1e13 + 20;
const int maxL = 50;
const int block_size = 531441;
const int max_block_cnt = max(block_size, (int)(maxN / block_size)) + 20;
long long pwA_small[block_size];
long long pwA_big[max_block_cnt];
long long ternary[max_block_cnt];
long long pwB[maxL];
long long big[2][1 << maxK];
long long small[1 << maxK];
long long prod[2][1 << maxK];

void just_do_it() {
	long long N, A, B, C;
	cin >> N >> A >> B >> C;
	pwB[0] = 1;
	for (int i = 1; i < maxL; i++) {
		pwB[i] = pwB[i - 1] * B % mod;
	}
	pwA_small[0] = 1;
	for (int i = 1; i < block_size; i++) {
		pwA_small[i] = pwA_small[i - 1] * A % mod;
	}
	pwA_big[0] = 1;
	pwA_big[1] = pwA_small[block_size - 1] * A % mod;
	for (int i = 2; i < max_block_cnt; i++) {
		pwA_big[i] = pwA_big[i - 1] * pwA_big[1] % mod;
	}
	ternary[0] = 1;
	for (int i = 1; i < max_block_cnt; i++) {
		ternary[i] = ternary[i / 3];
		for (int j = 0; j < i % 3; j++) {
			ternary[i] = ternary[i] * C % mod;
		}
	}
	int block_cnt = (N + 1) / block_size;
	int K = 0;
	while ((1 << K) < block_size) {
		K++;
	}
	for (int i = 0; i < block_cnt; i++) {
		long long pref = 1LL * i * block_size;
		int low = (pref & ((1 << K) - 1));
		long long high = (pref >> K);
		big[0][low] = (big[0][low] + pwA_big[i] * ternary[i] % mod * pwB[__builtin_popcountll(high)]) % mod;
		big[1][low] = (big[1][low] + pwA_big[i] * ternary[i] % mod * pwB[__builtin_popcountll(high + 1)]) % mod;
	}
	for (int i = 0; i < block_size; i++) {
		small[i] = (small[i] + pwA_small[i] * ternary[i]) % mod;
	}
	NTT::mul(big[0], small, prod[0], K + 1);
	NTT::mul(big[1], small, prod[1], K + 1);
	long long res = 0;
	for (int i = 0; i < (1 << K); i++) {
		res = (res + pwB[__builtin_popcount(i)] * prod[0][i]) % mod;
		res = (res + pwB[__builtin_popcount(i)] * prod[1][i + (1 << K)]) % mod;
	}
	for (long long i = 1LL * block_cnt * block_size; i <= N; i++) {
		res = (res + pwA_big[block_cnt] * pwA_small[i % block_size] % mod * pwB[__builtin_popcountll(i)] % mod * ternary[block_cnt] % mod * ternary[i % block_size]) % mod;
	}
	res = (res + mod - 1) % mod;
	cout << res;
}

詳細信息

Test #1:

score: 100
Accepted
time: 943ms
memory: 371508kb

input:

123456 12345 234567 3456789

output:

664963464

result:

ok 1 number(s): "664963464"

Test #2:

score: 0
Accepted
time: 1282ms
memory: 387872kb

input:

9876543210987 12816 837595 128478

output:

7972694

result:

ok 1 number(s): "7972694"

Test #3:

score: 0
Accepted
time: 1213ms
memory: 387692kb

input:

9196665971964 727160879 966835565 746444639

output:

949890012

result:

ok 1 number(s): "949890012"

Test #4:

score: 0
Accepted
time: 1242ms
memory: 387756kb

input:

9361549073598 749653880 965489817 371100607

output:

949904373

result:

ok 1 number(s): "949904373"

Test #5:

score: 0
Accepted
time: 1301ms
memory: 387904kb

input:

9567572694963 193332930 544713669 390021151

output:

878781872

result:

ok 1 number(s): "878781872"

Test #6:

score: 0
Accepted
time: 1220ms
memory: 387852kb

input:

9769301349033 215825931 425927410 408941695

output:

351574791

result:

ok 1 number(s): "351574791"

Test #7:

score: 0
Accepted
time: 1257ms
memory: 387732kb

input:

9975324970399 657749333 5151262 729852127

output:

400022780

result:

ok 1 number(s): "400022780"

Test #8:

score: 0
Accepted
time: 948ms
memory: 371240kb

input:

1 149762920 266126484 107367523

output:

910371791

result:

ok 1 number(s): "910371791"

Test #9:

score: 0
Accepted
time: 1015ms
memory: 387804kb

input:

903900971479 969144397 356713678 36786741

output:

414279957

result:

ok 1 number(s): "414279957"

Test #10:

score: 0
Accepted
time: 1064ms
memory: 387692kb

input:

1940757501452 72683414 106545701 263512239

output:

786323834

result:

ok 1 number(s): "786323834"

Test #11:

score: 0
Accepted
time: 1083ms
memory: 387900kb

input:

2914414844884 174466783 133201789 792227626

output:

187534312

result:

ok 1 number(s): "187534312"

Test #12:

score: 0
Accepted
time: 1098ms
memory: 387852kb

input:

3851250038782 553074217 881278164 297532837

output:

847958862

result:

ok 1 number(s): "847958862"

Test #13:

score: 0
Accepted
time: 1158ms
memory: 387728kb

input:

4692374803740 352867698 211679787 826248223

output:

426334178

result:

ok 1 number(s): "426334178"

Test #14:

score: 0
Accepted
time: 1144ms
memory: 387760kb

input:

5566041306806 454651067 959756163 633543322

output:

842296050

result:

ok 1 number(s): "842296050"

Test #15:

score: 0
Accepted
time: 1153ms
memory: 387732kb

input:

6902869060611 556434437 709588186 860268821

output:

897681255

result:

ok 1 number(s): "897681255"

Test #16:

score: 0
Accepted
time: 1203ms
memory: 387648kb

input:

7239695301792 356227918 736244273 667563920

output:

726280051

result:

ok 1 number(s): "726280051"

Test #17:

score: 0
Accepted
time: 1209ms
memory: 387688kb

input:

8217660029470 458011287 486076297 198034954

output:

967159922

result:

ok 1 number(s): "967159922"