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 "cave.h"
using namespace std;
using ll = long long;
using ld = long double;
using db = double;
using str = string;
using pi = pair<int, int>;
using pl = pair<ll, ll>;
using pd = pair<db, db>;
using vi = vector<int>;
using vb = vector<bool>;
using vl = vector<ll>;
using vd = vector<db>;
using vs = vector<str>;
using vpi = vector<pi>;
using vpl = vector<pl>;
using vpd = vector<pd>;
#define mp make_pair
#define f first
#define s second
#define sz(x) (int)(x).size()
#define bg(x) begin(x)
#define all(x) bg(x), end(x)
#define sor(x) sort(all(x))
#define ft front()
#define bk back()
#define pb push_back
#define pf push_front
#define lb lower_bound
#define ub upper_bound
#define FOR(i,a,b) for (int i = (a); i < (b); ++i)
#define F0R(i,a) FOR(i,0,a)
#define ROF(i,a,b) for (int i = (b)-1; i >= (a); --i)
#define R0F(i,a) ROF(i,0,a)
#define EACH(a,x) for (auto& a: x)
const int MOD = 1e9 + 7;
const int MX = 520;
const ll INF = 1e18;
void exploreCave(int N) {
int cur[N], fix[N]; int S[N], D[N];
F0R(i, N) {
F0R(j, N) {
if (fix[j]) {
cur[j] = fix[j] - 1;
}
else {
cur[j] = 0;
}
}
if (tryCombination(cur) == i) {
F0R(j, N) {
if (!fix[j]) {
cur[j] = 1;
}
}
}
int low = 0; int high = N - 1; int res = -1;
while (low <= high) {
int mid = (low + high) / 2;
FOR(j, low, mid + 1) {
if (!fix[j]) {
cur[j] = 1 - cur[j];
}
}
if (tryCombination(cur) == i) {
FOR(j, low, mid + 1) {
if (!fix[j]) {
cur[j] = 1 - cur[j];
}
}
res = mid; high = mid - 1;
}
else {
low = mid + 1;
}
}
S[res] = cur[res];
D[res] = i;
fix[res] = cur[res] + 1;
}
answer(S, D);
}
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