#include "hiddensequence.h"
#include <bits/stdc++.h>
using namespace std;
#define rep(i, a, b) for (int i = a; i < (b); ++i)
#define per(i, a, b) for (int i = b - 1; i >= (a); --i)
#define trav(a, x) for (auto &a : x)
#define all(x) x.begin(), x.end()
#define sz(x) x.size()
#define pb push_back
#define umap unordered_map
#define uset unordered_set
typedef pair<int, int> ii;
typedef pair<int, ii> iii;
typedef vector<int> vi;
typedef vector<ii> vii;
typedef vector<vi> vvi;
typedef long long ll;
const int INF = 1000000007;
vector<int> findSequence(int n) {
vector<int> ans(n, -1);
vi subseq;
int left[2], taken[2];
taken[0] = taken[1] = 0;
int zeros, ones, len = n / 2 + 1, small = 0, big = 1;
zeros = -1;
rep(i, 1, len + 1) {
subseq.pb(0);
if (!isSubsequence(subseq)) {
zeros = i - 1;
break;
}
}
if (zeros == -1) {
subseq.clear();
rep(i, 1, len + 1) {
subseq.pb(1);
if (!isSubsequence(subseq)) {
ones = i - 1;
break;
}
}
zeros = n - ones;
swap(small, big);
} else
ones = n - zeros;
per(i, 0, n) {
vi query;
int add;
query.clear();
rep(j, 0, left[big]) query.pb(big);
rep(j, 0, taken[small] + 1) query.pb(small);
if (sz(query) <= len) {
if (isSubsequence(query))
add = small;
else
add = big;
}
else {
query.clear();
rep(j, 0, left[small]) query.pb(small);
rep(j, 0, taken[big] + 1) query.pb(big);
if (isSubsequence(query))
add = big;
else
add = small;
}
--left[add];
++taken[add];
subseq.insert(subseq.begin(), add);
ans[i] = add;
}
return ans;
}
/*
static int maxQ = 0;
static vector<int> theRealAnswer;
bool isSubsequence(vector<int> v) {
if (v.size() > maxQ)
maxQ = v.size();
int i = 0;
for (auto it : v) {
while (i < theRealAnswer.size() && it != theRealAnswer[i]) i++;
if (i == theRealAnswer.size()) return 0;
i++;
}
return 1;
}
int main() {
int n, x;
scanf("%d", &n), maxQ = 0;
for (int i = 1; i <= n; i++)
scanf("%d", &x), theRealAnswer.push_back(x);
vector<int> ans = findSequence(n);
if (ans.size() != theRealAnswer.size()) {
printf("Different lengths\n");
for (auto it : ans)
printf("%d ", it);
printf("\n");
return 0;
}
for (int i = 0; i < ans.size(); i++)
if (ans[i] != theRealAnswer[i]) {
printf("WA position %d\n", i + 1);
for (auto it : ans)
printf("%d ", it);
printf("\n");
return 0;
}
printf("Ok, biggest queried length %d\n", maxQ);
return 0;
}*/
Compilation message
hidden.cpp:1:10: fatal error: hiddensequence.h: No such file or directory
1 | #include "hiddensequence.h"
| ^~~~~~~~~~~~~~~~~~
compilation terminated.
grader.cpp: In function 'int main()':
grader.cpp:28:26: warning: format '%d' expects argument of type 'int', but argument 3 has type 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wformat=]
28 | fprintf (fifo_out, "%d\n", ans.size ());
| ~^ ~~~~~~~~~~~
| | |
| int std::vector<int>::size_type {aka long unsigned int}
| %ld
grader.cpp:29:20: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
29 | for (int i=0; i<ans.size () && i < N; i++)
| ~^~~~~~~~~~~~
