This submission is migrated from previous version of oj.uz, which used different machine for grading. This submission may have different result if resubmitted.
#include <bits/stdc++.h>
#include "insects.h"
using namespace std;
const int maxn = 2010;
int in[maxn];
vector<bool> memo;
int n, c;
int base;
vector<int> id;
void put(int x) {
move_inside(x);
//memo[x] = 1;
}
void pop(int x) {
move_outside(x);
//memo[x] = 0;
}
map<vector<bool>, int> mapMemo;
bool last[maxn];
int push() {
return press_button();
if (mapMemo.count(memo)) return mapMemo[memo];
for (int i = 0; i < n; ++i) {
if (last[i] != (in[i] != 0)) {
if (last[i]) move_outside(i);
else move_inside(i);
last[i] ^= 1;
}
}
return mapMemo[memo] = press_button();
}
bool p(int x) {
int len = base;
for (int i:id) {
if (in[i] == -1) continue;
if (len == x * c) break;
put(i);
in[i] = 1;
if (push() > x) {
pop(i);
in[i] = 0;
} else {
len += 1;
}
}
if (len == x * c) {
for (int i=0;i<n; ++i) {
if (in[i] == 1) {
in[i] = -1;
base += 1;
}
}
} else {
for (int i=0;i<n;++i) {
if (in[i] == 1) {
pop(i);
in[i] = 0;
} else {
in[i] = -1;
}
}
}
return len == x * c;
}
int min_cardinality(int N) {
n = N;
id.resize(n);
iota(id.begin(), id.end(), 0);
random_shuffle(id.begin(), id.end());
memo.assign(n, 0);
c = 0;
for (int i=0; i<n; ++i) {
put(i);
in[i] = -1;
if (push() == 1) c += 1;
else pop(i), in[i] = 0;
}
base = c;
if (c == 1) return N;
if (c == N) return 1;
int lo = 1, hi = N / c+1;
while (hi-lo>1) {
int mid = (lo + hi) / 2;
if (p(mid)) lo = mid;
else hi = mid;
}
return lo;
}
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