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;
const int inf = 1e9 + 7;
int N;
int _S[5001], _P[5001];
// void answer(int a[], int b[]) {
// for (int i = 0; i < N; i++) cout << a[i] << ' '; cout << '\t'; for (int i = 0; i < N; i++) cout << _S[i] << ' '; cout << '\n';
// for (int i = 0; i < N; i++) cout << b[i] << ' '; cout << '\t'; for (int i = 0; i < N; i++) cout << _P[i] << ' '; cout << '\n';
// }
// int tryCombination(int a[]) {
// int ans = 0;
// vector <int> op(N + 1, 0);
// for (int i = 0; i < N; i++) {
// if (_S[i] == a[i]) op[_P[i]] = true;
// }
// while (op[ans++]);
// return ans;
// }
int ans[5001];
int* sett(vector <int> s, vector <int> fnd, int pos, int f) {
vector <int> temp = s;
for (int i = 0; i < pos; i++) {
if (!fnd[i]) {
temp[i] = f;
}
}
for (int i = pos; i < s.size(); i++) {
if (!fnd[i]) {
temp[i] = !f;
}
}
for (int i = 0; i < temp.size(); i++) ans[i] = temp[i];
return ans;
}
void exploreCave(int n) {
vector <int> s(n, 0);
vector <int> p(n, 0);
vector <int> fnd(n, 0);
for (int i = 0; i < n; i++) {
// find the switch connected with i-th door
// find the switch position 1/0
int k = tryCombination(sett(s, fnd, n, 1));
// in (fnd) -- already used swithces
bool f = 0;
if (k >= i + 1) {
f = true;
}
else {
f = false;
}
int l = 0,
r = n - 1;
while (r - l > 1) {
int m = (l + r) / 2;
int k = tryCombination(sett(s, fnd, m + 1, f));
if (k >= i + 1) {
r = m;
}
else {
l = m;
}
}
k = tryCombination(sett(s, fnd, l + 1, f));
if (k >= i + 1) {
p[l] = i;
s[l] = f;
fnd[l] = true;
}
else {
p[r] = i;
s[r] = f;
fnd[r] = true;
}
}
int S[n], P[n];
for (int i = 0; i < n; i++) {
S[i] = s[i];
P[i] = p[i];
}
answer(S, P);
}
// signed main() {
// N = 10;
// for (int i = 0; i < N; i++) {
// _P[i] = i;
// }
// random_shuffle(_P, _P + N);
// for (int i = 0; i < N; i++) {
// srand(time(nullptr));
// _S[i] = rand() % 2;
// }
// exploreCave(N);
// return 0;
// }
Compilation message (stderr)
cave.cpp: In function 'int* sett(std::vector<int>, std::vector<int>, int, int)':
cave.cpp:28:25: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
for (int i = pos; i < s.size(); i++) {
~~^~~~~~~~~~
cave.cpp:33:23: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
for (int i = 0; i < temp.size(); i++) ans[i] = temp[i];
~~^~~~~~~~~~~~~
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