#include <bits/stdc++.h>
#include "mushrooms.h"
using namespace std;
const int magic = 77;
const int bound = 226;
mt19937_64 rng(chrono::steady_clock::now().time_since_epoch().count());
// generate random number between l, r : uniform_int_distribution<long long>(l, r)(rng)
// random shuffle : shuffle(.begin(), .end(), rng)
int count_mushrooms(int n) {
if (n <= bound + 1) {
int ret = 1;
for (int i = 1; i < n; i++) {
ret += use_machine({0, i}) ^ 1;
}
return ret;
}
vector<int> a(n, -1);
a[0] = 0;
vector<int> order(magic);
iota(order.begin(), order.end(), 1);
shuffle(order.begin(), order.end(), rng);
int cnt = magic + 1;
int iter = 1;
map<int, vector<int>> best_choice;
while (iter--) {
order.insert(order.begin(), 0);
order.push_back(cnt++);
int st = use_machine(order);
a[cnt - 1] = a[0] ^ (st & 1);
best_choice[st] = order;
int sz = order.size() / (st + 1);
vector<int> Lorder, Rorder;
for (int i = 1; i < (int) order.size() - 1; i++) {
int md = i % (2 * sz);
if (md >= sz) Rorder.push_back(order[i]);
else Lorder.push_back(order[i]);
}
shuffle(Lorder.begin(), Lorder.end(), rng);
shuffle(Rorder.begin(), Rorder.end(), rng);
order = Lorder;
order.insert(order.end(), Rorder.begin(), Rorder.end());
}
int st = best_choice.begin()->first;
order = best_choice.begin()->second;
vector<int> ONE, ZERO;
ZERO.push_back(0);
for (int i = 0; i < 2; i++) {
a[cnt] = (use_machine({0, cnt}) & 1) ^ a[0];
cnt++;
if (a[cnt - 1] == 0) ZERO.push_back(cnt - 1);
else ONE.push_back(cnt - 1);
}
function<void(int, int, int, vector<int>)> dfs = [&](int vL, int vR, int tot, vector<int> p) {
assert(vL != -1 && vR != -1 && vL == a[p[0]] && vR == a[p.back()]);
assert(0 <= tot && tot <= (int) p.size() - 1);
if (p.size() <= 2) return;
if (tot == 0) {
for (int i = 1; i < (int) p.size() - 1; i++) a[p[i]] = a[p[i - 1]];
return;
}
if (tot == (int) p.size() - 1) {
for (int i = 1; i < (int) p.size() - 1; i++) a[p[i]] = a[p[i - 1]] ^ 1;
return;
}
int sz = p.size();
int mid = (sz + 1) / 2;
assert(mid > 1);
if (mid > 2) {
vector<int> que(p.begin(), p.begin() + mid);
que.push_back(cnt++);
int st = use_machine(que);
a[cnt - 1] = vL ^ (st & 1);
dfs(vL, a[cnt - 1], st, que);
for (int i = 1; i < mid; i++) {
int u = que[i], v = que[i - 1];
tot -= a[u] ^ a[v];
}
} else {
vector<int> pii = ONE.size() >= 2 ? ONE : ZERO;
int st = use_machine({pii[0], p[mid - 1], pii[1], cnt++});
a[cnt - 1] = a[pii[0]] ^ (st & 1);
st -= a[pii[1]] ^ a[cnt - 1];
if (st > 0) a[p[mid - 1]] = a[pii[0]] ^ 1;
else a[p[mid - 1]] = a[pii[0]];
tot -= a[p[mid - 1]] ^ a[p[0]];
}
vector<int> que = vector<int>(p.begin() + mid - 1, p.end());
dfs(a[p[mid - 1]], vR, tot, que);
};
dfs(a[0], a[order.back()], st, order);
int ret = 0;
vector<int> zeros, ones;
for (int i = 0; i < cnt; i++) {
if (a[i] == 0) zeros.push_back(i);
else ones.push_back(i);
}
ret += zeros.size();
while (cnt < n) {
int len = min(n - cnt, (int) max(zeros.size(), ones.size()));
vector<int> ids = zeros.size() >= ones.size() ? zeros : ones;
vector<int> que;
for (int i = 0; i < len; i++) {
que.push_back(ids[i]);
que.push_back(cnt++);
}
int st = use_machine(que);
if (ids == ones) {
a[cnt - 1] = 1 ^ (st & 1);
ret += a[cnt - 1] == 0;
st -= a[cnt - 1] == 0;
if (a[cnt - 1] == 0) zeros.push_back(cnt - 1);
else ones.push_back(cnt - 1);
assert(st % 2 == 0);
ret += st >> 1;
} else {
a[cnt - 1] = 0 ^ (st & 1);
ret += a[cnt - 1] == 0;
st -= a[cnt - 1] == 1;
if (a[cnt - 1] == 0) zeros.push_back(cnt - 1);
else ones.push_back(cnt - 1);
assert(st % 2 == 0);
ret += (len - 1) - (st >> 1);
}
}
return ret;
}
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
0 ms |
344 KB |
Output is correct |
| 2 |
Correct |
0 ms |
344 KB |
Output is correct |
| 3 |
Correct |
0 ms |
344 KB |
Output is correct |
| 4 |
Correct |
0 ms |
344 KB |
Output is correct |
| 5 |
Correct |
1 ms |
344 KB |
Output is correct |
| 6 |
Correct |
1 ms |
464 KB |
Output is correct |
| 7 |
Correct |
3 ms |
552 KB |
Output is correct |
| 8 |
Correct |
4 ms |
800 KB |
Output is correct |
| 9 |
Correct |
4 ms |
548 KB |
Output is correct |
| 10 |
Correct |
4 ms |
548 KB |
Output is correct |
| 11 |
Partially correct |
4 ms |
556 KB |
Output is partially correct |
| 12 |
Correct |
4 ms |
544 KB |
Output is correct |
| 13 |
Correct |
4 ms |
552 KB |
Output is correct |
| 14 |
Correct |
3 ms |
512 KB |
Output is correct |
| 15 |
Partially correct |
4 ms |
560 KB |
Output is partially correct |
| 16 |
Partially correct |
4 ms |
560 KB |
Output is partially correct |
| 17 |
Correct |
2 ms |
504 KB |
Output is correct |
| 18 |
Correct |
4 ms |
548 KB |
Output is correct |
| 19 |
Partially correct |
4 ms |
556 KB |
Output is partially correct |
| 20 |
Correct |
4 ms |
548 KB |
Output is correct |
| 21 |
Correct |
4 ms |
548 KB |
Output is correct |
| 22 |
Partially correct |
4 ms |
552 KB |
Output is partially correct |
| 23 |
Correct |
4 ms |
544 KB |
Output is correct |
| 24 |
Correct |
2 ms |
512 KB |
Output is correct |
| 25 |
Partially correct |
5 ms |
804 KB |
Output is partially correct |
| 26 |
Partially correct |
5 ms |
556 KB |
Output is partially correct |
| 27 |
Partially correct |
4 ms |
556 KB |
Output is partially correct |
| 28 |
Partially correct |
4 ms |
556 KB |
Output is partially correct |
| 29 |
Partially correct |
5 ms |
552 KB |
Output is partially correct |
| 30 |
Partially correct |
4 ms |
808 KB |
Output is partially correct |
| 31 |
Partially correct |
4 ms |
552 KB |
Output is partially correct |
| 32 |
Partially correct |
4 ms |
560 KB |
Output is partially correct |
| 33 |
Partially correct |
5 ms |
1060 KB |
Output is partially correct |
| 34 |
Partially correct |
4 ms |
552 KB |
Output is partially correct |
| 35 |
Partially correct |
4 ms |
548 KB |
Output is partially correct |
| 36 |
Partially correct |
4 ms |
796 KB |
Output is partially correct |
| 37 |
Partially correct |
5 ms |
556 KB |
Output is partially correct |
| 38 |
Partially correct |
4 ms |
556 KB |
Output is partially correct |
| 39 |
Partially correct |
4 ms |
560 KB |
Output is partially correct |
| 40 |
Partially correct |
4 ms |
556 KB |
Output is partially correct |
| 41 |
Partially correct |
5 ms |
556 KB |
Output is partially correct |
| 42 |
Partially correct |
4 ms |
888 KB |
Output is partially correct |
| 43 |
Partially correct |
4 ms |
552 KB |
Output is partially correct |
| 44 |
Partially correct |
4 ms |
548 KB |
Output is partially correct |
| 45 |
Partially correct |
4 ms |
800 KB |
Output is partially correct |
| 46 |
Partially correct |
6 ms |
800 KB |
Output is partially correct |
| 47 |
Partially correct |
4 ms |
556 KB |
Output is partially correct |
| 48 |
Partially correct |
4 ms |
556 KB |
Output is partially correct |
| 49 |
Partially correct |
4 ms |
552 KB |
Output is partially correct |
| 50 |
Partially correct |
4 ms |
788 KB |
Output is partially correct |
| 51 |
Partially correct |
4 ms |
548 KB |
Output is partially correct |
| 52 |
Partially correct |
4 ms |
552 KB |
Output is partially correct |
| 53 |
Partially correct |
4 ms |
552 KB |
Output is partially correct |
| 54 |
Partially correct |
4 ms |
808 KB |
Output is partially correct |
| 55 |
Partially correct |
4 ms |
804 KB |
Output is partially correct |
| 56 |
Partially correct |
5 ms |
556 KB |
Output is partially correct |
| 57 |
Partially correct |
4 ms |
560 KB |
Output is partially correct |
| 58 |
Partially correct |
5 ms |
552 KB |
Output is partially correct |
| 59 |
Partially correct |
5 ms |
556 KB |
Output is partially correct |
| 60 |
Partially correct |
4 ms |
812 KB |
Output is partially correct |
| 61 |
Partially correct |
4 ms |
552 KB |
Output is partially correct |
| 62 |
Correct |
0 ms |
344 KB |
Output is correct |
| 63 |
Correct |
0 ms |
344 KB |
Output is correct |
| 64 |
Correct |
0 ms |
344 KB |
Output is correct |
| 65 |
Correct |
0 ms |
344 KB |
Output is correct |
| 66 |
Correct |
0 ms |
344 KB |
Output is correct |
| 67 |
Correct |
0 ms |
344 KB |
Output is correct |
| 68 |
Correct |
0 ms |
344 KB |
Output is correct |
| 69 |
Correct |
0 ms |
596 KB |
Output is correct |
| 70 |
Correct |
0 ms |
344 KB |
Output is correct |
| 71 |
Correct |
0 ms |
344 KB |
Output is correct |
| 72 |
Correct |
0 ms |
344 KB |
Output is correct |
| 73 |
Correct |
0 ms |
344 KB |
Output is correct |
| 74 |
Correct |
0 ms |
344 KB |
Output is correct |
| 75 |
Correct |
0 ms |
344 KB |
Output is correct |
| 76 |
Correct |
0 ms |
344 KB |
Output is correct |
| 77 |
Correct |
0 ms |
344 KB |
Output is correct |
| 78 |
Correct |
0 ms |
344 KB |
Output is correct |
| 79 |
Correct |
0 ms |
344 KB |
Output is correct |
| 80 |
Correct |
0 ms |
344 KB |
Output is correct |
| 81 |
Correct |
0 ms |
344 KB |
Output is correct |
| 82 |
Correct |
1 ms |
344 KB |
Output is correct |
| 83 |
Correct |
0 ms |
596 KB |
Output is correct |
| 84 |
Correct |
0 ms |
344 KB |
Output is correct |
| 85 |
Correct |
0 ms |
344 KB |
Output is correct |
| 86 |
Correct |
1 ms |
344 KB |
Output is correct |
| 87 |
Correct |
0 ms |
344 KB |
Output is correct |
| 88 |
Correct |
0 ms |
344 KB |
Output is correct |
| 89 |
Correct |
0 ms |
596 KB |
Output is correct |
| 90 |
Correct |
2 ms |
344 KB |
Output is correct |
| 91 |
Correct |
0 ms |
344 KB |
Output is correct |
