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QOJ
ID | Problem | Submitter | Result | Time | Memory | Language | File size | Submit time | Judge time |
---|---|---|---|---|---|---|---|---|---|
#351742 | #8330. Count off 3 | ucup-team3215 | AC ✓ | 438ms | 4052kb | C++20 | 4.9kb | 2024-03-12 13:57:44 | 2024-03-12 13:57:44 |
Judging History
answer
#include <algorithm>
#include <array>
#include <cmath>
#include <cstdint>
#include <iostream>
#include <vector>
using namespace std;
constexpr int N = 1e4, N6 = N / 6 + 2, T = 10, mod = 1e9 + 7, pw7[]{1, 7, 49, 343, 2401};
auto& mul(auto&& a, auto b) { return a = a * (uint64_t)b % mod; }
auto& add(auto&& a, auto b) { return a -= (a += b) >= mod? mod: 0; }
int sub7(int a, int b) { return a += (a -= b) < 0? 7: 0; }
int cnk[N6], c7[N6][7];
int calc_worst(const string& s, const vector<array<int, 6>>& bad) {
int64_t ans = 0;
array<int, 6> pref{};
pref[5] = 1;
for (int i = 0; i < s.size(); ++i) if (s[i]) {
int q = (s.size() - i - 1) / 6, r = (s.size() - i - 1) % 6;
for (auto& b: bad) {
int cur = 1;
#pragma GCC unroll 9
for (int i = 0; i < 6; ++i) mul(cur, c7[q + (i < r)][sub7(b[i], pref[i])]);
ans += cur;
}
++pref[(s.size() - i - 1) % 6] %= 7;
}
return ans % mod;
}
int ans[T], cans[T], dp[2][pw7[4]];
string s[T];
array<int, 6> pref[T];
template <size_t n>
void calc_best(array<int, n> bad) {
int mlen = 0;
for (int i = 0; i < T; ++i) if (pref[i] = {}, cans[i] = 0, mlen = max(mlen, {s[i].size()}), 1)
for (int j = 0; j < s[i].size(); ++j)
for (int k = 0; k < n; ++k) pref[i][k] = (pref[i][k] * bad[k] + s[i][j]) % 7;
for (int i = 0; i < T; ++i)
for (int k = 0; k < n; ++k) {
int t = 1;
for (int j = 5; j--; ) t = t * bad[k] % 7;
pref[i][k] = (pref[i][k] + t) % 7;
}
constexpr int sz = pw7[n];
fill_n(dp[0], sz, 0);
dp[0][0] = 1;
int cpw[n];
fill_n(cpw, n, 6);
auto plain = [](auto... xs) { int x = 0; return ((x = x * 7 + xs), ...); };
for (int i = 0; i < mlen; ++i) {
for (int j = 0; j < T; ++j) if (s[j].size() >= i)
for (int k = 0; k < n; ++k) pref[j][k] = (pref[j][k] + s[j].rbegin()[i] * cpw[k]) % 7;
auto& cur = dp[i & 1], & nx = dp[~i & 1];
for (int j = 0; j < T; ++j) if (s[j].size() > i && s[j].rbegin()[i]) {
int idx = 0;
for (int i = 0; i < n; ++i) idx = idx * 7 + pref[j][i];
add(cans[j], cur[idx]);
}
if constexpr (n == 4) {
for (int a0 = 0; a0 < 7; ++a0)
for (int a1 = 0; a1 < 7; ++a1)
for (int a2 = 0; a2 < 7; ++a2)
#pragma GCC unroll 9
for (int a3 = 0; a3 < 7; ++a3) {
nx[plain(a0, a1, a2, a3)] = add(+cur[plain(a0, a1, a2, a3)], cur[plain(sub7(a0, cpw[0]), sub7(a1, cpw[1]), sub7(a2, cpw[2]), sub7(a3, cpw[3]))]);
}
} else if constexpr (n == 3) {
for (int a0 = 0; a0 < 7; ++a0)
for (int a1 = 0; a1 < 7; ++a1)
#pragma GCC unroll 9
for (int a2 = 0; a2 < 7; ++a2) {
nx[plain(a0, a1, a2)] = add(+cur[plain(a0, a1, a2)], cur[plain(sub7(a0, cpw[0]), sub7(a1, cpw[1]), sub7(a2, cpw[2]))]);
}
} else if constexpr (n == 2) {
for (int a0 = 0; a0 < 7; ++a0)
for (int a1 = 0; a1 < 7; ++a1) {
nx[plain(a0, a1)] = add(+cur[plain(a0, a1)], cur[plain(sub7(a0, cpw[0]), sub7(a1, cpw[1]))]);
}
} else if constexpr (n == 1) {
for (int a0 = 0; a0 < 7; ++a0) {
nx[plain(a0)] = add(+cur[plain(a0)], cur[plain(sub7(a0, cpw[0]))]);
}
}
for (int i = 0; i < n; ++i) cpw[i] = cpw[i] * bad[i] % 7;
}
for (int i = 0; i < T; ++i) add(ans[i], n % 2? mod - cans[i]: cans[i]);
}
int main() {
cin.tie(0)->sync_with_stdio(0);
for (int i = 0; i < N6; ++i)
for (int j = i + 1; j--; ) add(c7[i][j % 7], !j? cnk[j] = 1: add(cnk[j], cnk[j - 1]));
int t; cin >> t;
for (int i = 0; i < t; ++i) {
cin >> s[i];
for (auto& c: s[i]) c -= '0';
s[i].insert(s[i].begin(), 0);
for (int j = s[i].size(); j--; ) if (s[i][j]++) s[i][j] = 0; else break;
s[i].pop_back();
for (auto c: s[i]) ans[i] = (ans[i] * 2 + c) % mod;
}
constexpr int cutoff = 4;
{
vector<array<int, 6>> bad[7];
for (int i = 0; i < pow(7, 6); ++i) {
array<int, 6> d;
for (int j = 6, t = i; j--; t /= 7) d[j] = t % 7;
int badness = 0;
for (int j = 7; --j; ) {
int s = 0;
for (auto d: d) s = (s * j + d) % 7;
badness += !s;
}
for (int j = cutoff; j++ < badness; ) bad[j].insert(bad[j].end(), badness == j? 1: j == badness - 1? badness: badness * (badness - 1) / 2, d);
}
for (int i = 0; i < T; ++i)
for (int j = cutoff; j++ < 6; ) {
auto t = calc_worst(s[i], bad[j]);
add(ans[i], j % 2? mod - t: t);
}
}
for (int m = 0; m < 1 << 6; ++m) if (__builtin_popcount(m) <= cutoff) {
vector<int> v;
for (int i = 0; i < 6; ++i) if (m & 1 << i) v.push_back(i + 1);
if (v.size() == 4) calc_best<4>({v[0], v[1], v[2], v[3]});
else if (v.size() == 3) calc_best<3>({v[0], v[1], v[2]});
else if (v.size() == 2) calc_best<2>({v[0], v[1]});
else if (v.size() == 1) calc_best<1>({v[0]});
}
for (int i = 0; i < t; ++i) cout << ans[i] << '\n';
}
这程序好像有点Bug,我给组数据试试?
Details
Tip: Click on the bar to expand more detailed information
Test #1:
score: 100
Accepted
time: 17ms
memory: 3712kb
input:
5 1 1010 110101 1000111000 101101001000
output:
1 2 15 114 514
result:
ok 5 number(s): "1 2 15 114 514"
Test #2:
score: 0
Accepted
time: 35ms
memory: 3600kb
input:
10 1 11 1000 10111011 1000110100101001 11101110000001000011010011011000 110011000111110001101010101100100011010010101000011111001101011 11010111011101000010101111011111011011100001001101010011101011111111011011111101110110010011001101000001000111100010010111000010 10000000000000000000000000000000000...
output:
1 1 2 45 6591 814196699 193088128 849103726 497125329 363076920
result:
ok 10 numbers
Test #3:
score: 0
Accepted
time: 386ms
memory: 3740kb
input:
10 1 101 100101000 111111001111011001111100111 100001101010101000101110010111010010001101101110011111000001010001111100101010000 111001010100100100110011110111000111001001001001000100000011000110011000110101010010100000100101110101000011000011100010011001011000101110100111000110011011010111011111011...
output:
1 2 64 27062688 486363229 184013394 580592021 118930214 772664718 344619804
result:
ok 10 numbers
Test #4:
score: 0
Accepted
time: 405ms
memory: 3824kb
input:
10 1 1011 1101001010001110 1000010101110010000010010000000000001010111001001001110011001101 1001100101110111001000100100110111110001110010111011010101010111011101111101111100010000001100001001011100111100010110011010000010000000001100111011000001110011010000100000110101010011111100010111111100011011...
output:
1 3 10053 860833891 537931408 329471109 368911735 157523156 595487313 534701861
result:
ok 10 numbers
Test #5:
score: 0
Accepted
time: 411ms
memory: 3796kb
input:
10 1 11111 1010110010010000111001001 10011010100100001000110000111101101000111100001000000101010001100111111010001000101000000011100101000101100111100001001101100 11000100100010011101010101001011100010001100001010110011110101001101011000110001000111101010010000110111010001100100100111001000001000010...
output:
1 10 4692555 763463648 464152115 115362567 880780461 578723006 560068977 423846910
result:
ok 10 numbers
Test #6:
score: 0
Accepted
time: 415ms
memory: 3752kb
input:
10 1 101011 100100110100111100001101000101011100 1011011000011001101101010110000111011001001100110101111100110000100100101010000000110110010001110011101011000001011001000010001011101110110100110010111111000101101010110000101010101011001111100111011001101111011101 101000000111000010111000110000011000...
output:
1 13 955673880 266148454 368723690 496979115 190983211 772121423 932555320 843716403
result:
ok 10 numbers
Test #7:
score: 0
Accepted
time: 418ms
memory: 3844kb
input:
10 1 1101101 1100111111001000111100000010000111000000010101001 110111101101011000111101100110010011011100101110101111110011001111001101001000011001110011110101001110010110011110011001111010010101010011010011101101111010111000001110110111011011101000100001000001101110010111100110001110011101110111100...
output:
1 29 912933242 912560788 607401363 477602366 394403189 275067439 592568023 75193370
result:
ok 10 numbers
Test #8:
score: 0
Accepted
time: 417ms
memory: 4036kb
input:
10 1 10000010 100101110110100111100000100011111111010001100010100001100110001 111111000010011010111011111110000010101101011110100001101011110000001111001110001111110101000000010000001011000101101011010111011101111110101001000110011101010000111001011111100100010000010110110101010001110100111110110001...
output:
1 32 959140870 614330473 849221876 787816311 359958989 239371459 534701861 254356877
result:
ok 10 numbers
Test #9:
score: 0
Accepted
time: 419ms
memory: 3760kb
input:
10 1 111110011 111101001101011110100011110000100110011101010111111110100001111001101000100101101 11011010000110101011111110110011101010100100110001001111111011010000101111110001001011000011010101001000101110000100011011100101010110010101000101010111101100101110111100011011011000101101001001001100111...
output:
1 99 286317277 694681686 723919544 789291149 680541846 694957099 453387561 757810824
result:
ok 10 numbers
Test #10:
score: 0
Accepted
time: 428ms
memory: 4016kb
input:
10 1 1001001110 10110010111110100100111100111101101010111110111011001110000111101011011010110011110000000001110100 11000101011111110110100101100100100000010110001011100010101111111000000111000101100110111110101010111110010110111111110010110010001100000000111000101100010001110010001011111110101011111...
output:
1 120 987933828 449323095 435643580 557750562 122442298 758115947 388795572 87146822
result:
ok 10 numbers
Test #11:
score: 0
Accepted
time: 433ms
memory: 3768kb
input:
10 1 11010010100 100110110000100111011101001111000000000110111100011110111011110100001010101000000000100000101100100101110101011100111000 110111100000010010111000111011111100010100100111101001001101111010011011100100001010100010100011110111111100101011100111111011011000000111001111000101111010110111...
output:
1 325 391030697 323231960 401473132 822267612 841573845 283856764 804647498 76347459
result:
ok 10 numbers
Test #12:
score: 0
Accepted
time: 428ms
memory: 3700kb
input:
10 1 111111110011 100111010001010010111100011101110011110100101101010111001110101111000111010001111110000001000011010111010001001000011101100011100010010100010000 11001011101100010011111001010110110000110110011001011001000001001110010100100000000101100010001011010010001101000101110000111100100000001...
output:
1 704 677678115 593427859 667002509 574438492 664907465 979953874 8529137 613727900
result:
ok 10 numbers
Test #13:
score: 0
Accepted
time: 424ms
memory: 3816kb
input:
10 1 1100110101011 100111000010011100111101101100110010110000100011110101100100011001101011100011101101110111001101000001110010111001110011100101000111111000010101101100011000010100010101 1111010000010011010010011000010000000001000110111011101100111011100010110011100110011110011011110011110100011001...
output:
1 1146 832402516 402106502 689225542 416112434 991952024 938688647 880733772 630306115
result:
ok 10 numbers
Test #14:
score: 0
Accepted
time: 437ms
memory: 4052kb
input:
10 1 11000000000111 110010000100100011111101001100111010110111011101101011001001010110101111111101001000000100110011110101100111010110100100010100000100000011100010101011010001100001000111000101000011010110010100000 101001000110100011110100011001010101001010011111010111111001100111111100101111110111...
output:
1 2087 659256442 942088668 754989716 908871865 566839365 111034927 696022638 206335876
result:
ok 10 numbers
Test #15:
score: 0
Accepted
time: 429ms
memory: 3816kb
input:
10 1 111100001011110 101100010011110001000011110010011010011100110010111110100111111111100101100111010101001101111001111010111011011111000111000101101010001100111010100110110000111110100100101000001101111100000101101100010110101000011001110001101 11111110001100110111110110100010111010100010010010010...
output:
1 5612 120730460 903512843 440620378 736669452 35297346 414402862 87146822 461180872
result:
ok 10 numbers
Test #16:
score: 0
Accepted
time: 427ms
memory: 3804kb
input:
10 1 1011110111101110 11111011001101100000000011011111011000101001100010000000001010011110010000100000111100101011101111111111001000110011110000011001000111000010101100001001100111100100000010101101111100100100101110101100000000011101011100010111111010000101011000110010011000 11110011001110110000001...
output:
1 9074 47298040 806126372 607928251 829797230 861514498 6535505 135611721 148853296
result:
ok 10 numbers
Test #17:
score: 0
Accepted
time: 428ms
memory: 3984kb
input:
10 1 11101111010010001 1111011100010101011101000110010001011001010101000100111100010110101010010001100101001001011111101001101100110100100100101101011001100000101011000100001011101000101000110000110100100100001001000011000111000010100011001111111011010001110111101111010011100010110001010010000100001...
output:
1 25268 485539600 497476229 129697011 91489334 354698980 228961474 875061949 618786188
result:
ok 10 numbers
Test #18:
score: 0
Accepted
time: 438ms
memory: 3768kb
input:
10 1 101101011100110001 100111001100000111101000101110011011011011111101011110101111000010000101010001010110100101001001100010101100101001110110001101101100111111100001000100010010110101110010111101100110010000010001101011001110001001100111101100111010100100000000000010000100101001000110000111100100...
output:
1 38342 769759919 33866310 945890505 127750526 125262837 888967227 757810824 441419016
result:
ok 10 numbers
Test #19:
score: 0
Accepted
time: 437ms
memory: 3940kb
input:
10 1 1001100011010110111 11100110010001111111110100011111100100011011110000110100000111101100111110111010111010111001111111100111011000000101001111000010001100010001111001011000111111001111100100101101011001110011100000111011111110101000111011101101110101101101110101100000011000001001011011100001111...
output:
1 65218 438898572 348219276 776140964 704823526 170625715 198310775 477853700 897436999
result:
ok 10 numbers
Test #20:
score: 0
Accepted
time: 432ms
memory: 3764kb
input:
10 1 11010100111111001011 1000011001001001110110101001100001001101001001010010101010001110011001001000000000110001100110001110110111010100101011011001100101001110111001101101000111101100010110101100101110111101000101111010100110001011110111000110000110110111011101110010010011010001110101010110010000...
output:
1 183823 238142747 846693477 959968477 260267123 642987070 779134130 951392182 679687101
result:
ok 10 numbers
Extra Test:
score: 0
Extra Test Passed