#include "insects.h"
#include "bits/stdc++.h"
#define SZ(s) ((int) s.size())
using namespace std;
#ifndef RR
#define DEBUG(X)
#endif
/* sub1
// Sub 1 {{{
int min_cardinality(int n) {
std::vector<int> v_ids(n);
std::iota(v_ids.begin(), v_ids.end(), 0);
std::set<int> ids(v_ids.begin(), v_ids.end());
int freq = 0, last_cnt = 0;
while (true) {
++freq;
std::set<int> new_ids;
for (int id : ids) {
move_inside(id);
if (press_button() > freq) {
move_outside(id);
new_ids.insert(id);
}
}
int unique_values = SZ(ids) - SZ(new_ids);
if (unique_values < last_cnt) {
return freq - 1;
}
last_cnt = unique_values;
if (unique_values > SZ(new_ids)) {
return freq;
}
ids = std::move(new_ids);
}
return 0;
}
// }}}
*/
// seeds = set containing unique indices
int solve_small(int n, const std::set<int>& seeds) {
std::set<int> used;
int res = n;
int n_unique = SZ(seeds);
for (int turn = 0; turn + 1 < n_unique; ++turn) {
std::set<int> cur;
for (int i = 0; i < n; ++i) {
if (!seeds.count(i) && !used.count(i)) {
cur.insert(i);
move_inside(i);
if (press_button() != SZ(cur) + 1) {
move_outside(i);
cur.erase(i);
}
}
}
used.insert(cur.begin(), cur.end());
res = std::min(res, SZ(cur) + 1);
for (int i : cur) move_outside(i);
}
int remaining = n - SZ(used) - SZ(seeds) + 1;
res = std::min(res, remaining);
return res;
}
int min_cardinality(int n) {
std::set<int> insides;
int freq = 1;
auto add = [&] (int i) {
insides.insert(i);
move_inside(i);
};
auto remove = [&] (int i) {
insides.erase(i);
move_outside(i);
};
for (int i = 0; i < n; ++i) {
add(i);
if (press_button() > 1) {
remove(i);
}
}
int unique_vals = SZ(insides);
DEBUG(unique_vals);
if (unique_vals <= 5) {
return solve_small(n, insides);
}
int l = 2, r = n / unique_vals - 1, res = 1;
while (l <= r) {
int mid = l + (r - l + 1) / 2;
assert(mid != freq);
if (mid > freq) {
for (int i = 0; i < n; ++i) {
if (!insides.count(i)) {
add(i);
if (press_button() > mid) {
remove(i);
}
}
}
} else {
auto ids = insides;
for (int id : ids) remove(id);
for (int i : ids) {
add(i);
if (press_button() > mid) {
remove(i);
}
}
}
freq = mid;
int total = SZ(insides);
if (total >= unique_vals * mid) {
// all values have at least frequency = mid
res = mid;
l = mid + 1;
} else {
r = mid - 1;
}
}
return res;
}
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
0 ms |
208 KB |
Output is correct |
2 |
Correct |
0 ms |
280 KB |
Output is correct |
3 |
Correct |
0 ms |
208 KB |
Output is correct |
4 |
Correct |
0 ms |
208 KB |
Output is correct |
5 |
Correct |
1 ms |
208 KB |
Output is correct |
6 |
Correct |
2 ms |
208 KB |
Output is correct |
7 |
Correct |
3 ms |
208 KB |
Output is correct |
8 |
Incorrect |
9 ms |
208 KB |
Wrong answer. |
9 |
Halted |
0 ms |
0 KB |
- |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
0 ms |
208 KB |
Output is correct |
2 |
Correct |
0 ms |
280 KB |
Output is correct |
3 |
Correct |
0 ms |
208 KB |
Output is correct |
4 |
Correct |
0 ms |
208 KB |
Output is correct |
5 |
Correct |
1 ms |
208 KB |
Output is correct |
6 |
Correct |
2 ms |
208 KB |
Output is correct |
7 |
Correct |
3 ms |
208 KB |
Output is correct |
8 |
Incorrect |
9 ms |
208 KB |
Wrong answer. |
9 |
Halted |
0 ms |
0 KB |
- |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
0 ms |
208 KB |
Output is correct |
2 |
Correct |
0 ms |
208 KB |
Output is correct |
3 |
Correct |
0 ms |
208 KB |
Output is correct |
4 |
Correct |
0 ms |
208 KB |
Output is correct |
5 |
Correct |
1 ms |
208 KB |
Output is correct |
6 |
Correct |
1 ms |
208 KB |
Output is correct |
7 |
Correct |
21 ms |
208 KB |
Output is correct |
8 |
Correct |
15 ms |
332 KB |
Output is correct |
9 |
Incorrect |
50 ms |
340 KB |
Wrong answer. |
10 |
Halted |
0 ms |
0 KB |
- |