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>
#define pb emplace_back
#define AI(i) begin(i), end(i)
using namespace std;
using ll = long long;
#ifdef KEV
#define DE(args...) kout("[ " + string(#args) + " ] : ", args)
void kout() { cerr << endl; }
template<class T, class ...U>
void kout(T a, U ...b) { cerr << a << ' ', kout(b...); }
void debug(auto L, auto R) { while (L != R) cerr << *L << " \n"[next(L) == R], ++L; }
vector<int> ans{1,0,0,0,0,0,0,0,1,1,0};
bool isSubsequence(vector<int> a) {
for (int i = 0, j = 0;i < a.size();++i) {
while (j < ans.size() && ans[j] != a[i])
++j;
if (j == ans.size()) return false;
++j;
}
return true;
}
#else
#include "grader.h"
#define debug(...) 0
#define DE(...) 0
#endif
const int MAX_N = 300010;
const vector<int> zero{0}, one{1};
int n;
bool query(vector<int> a) {
if (a.size() > n) return false;
return isSubsequence(a);
}
vector<int> operator + (vector<int> a, vector<int> b) {
a.insert(end(a), AI(b));
return a;
}
vector<int> findSequence(int _n) {
n = _n;
DE(n);
vector<int> Z, O, ans;
while (true) {
bool go = true;
if (query(Z + zero))
Z.pb(0);
else go = false;
if (query(O + one))
O.pb(1);
else go = false;
if (!go) break;
}
DE(O.size(), Z.size());
if (query(O + one)) {
while (O.size() + Z.size() < n)
O.pb(1);
}
else {
while (O.size() + Z.size() < n)
Z.pb(0);
}
if (Z.empty() || O.empty())
return Z.empty() ? O : Z;
vector<int> cnt(n+1);
DE(__LINE__);
// insert into zeroes
if (Z.size() < O.size()) {
int zs = Z.size();
for (int i = 0;i <= Z.size();++i) {
vector<int> ad;
while (query(vector<int>(i, 0) + ad + one + vector<int>(zs-i, 0)))
++cnt[i], ad.pb(1);
}
for (int i = 0;i <= Z.size();++i) {
while (cnt[i]--)
ans.pb(1);
if (i < Z.size())
ans.pb(0);
}
}
else {
int zs = O.size();
DE(zs);
for (int i = 0;i <= O.size();++i) {
vector<int> ad;
while (query(vector<int>(i, 1) + ad + zero + vector<int>(zs-i, 1)))
++cnt[i], ad.pb(0);
}
for (int i = 0;i <= O.size();++i) {
while (cnt[i]--)
ans.pb(0);
if (i < O.size())
ans.pb(1);
}
}
return ans;
}
#ifdef KEV
int32_t main() {
ios_base::sync_with_stdio(0), cin.tie(0);
vector<int> res = findSequence(ans.size());
if (res == ans)
cerr << "AC!\n";
else {
cerr << "WA\n";
debug(AI(res));
cerr << "Should be\n";
debug(AI(ans));
}
}
#endif
Compilation message (stderr)
hidden.cpp: In function 'bool query(std::vector<int>)':
hidden.cpp:31:15: warning: comparison of integer expressions of different signedness: 'std::vector<int>::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare]
31 | if (a.size() > n) return false;
| ~~~~~~~~~^~~
hidden.cpp: In function 'std::vector<int> findSequence(int)':
hidden.cpp:25:17: warning: statement has no effect [-Wunused-value]
25 | #define DE(...) 0
| ^
hidden.cpp:41:2: note: in expansion of macro 'DE'
41 | DE(n);
| ^~
hidden.cpp:25:17: warning: statement has no effect [-Wunused-value]
25 | #define DE(...) 0
| ^
hidden.cpp:55:2: note: in expansion of macro 'DE'
55 | DE(O.size(), Z.size());
| ^~
hidden.cpp:58:30: warning: comparison of integer expressions of different signedness: 'std::vector<int>::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare]
58 | while (O.size() + Z.size() < n)
| ~~~~~~~~~~~~~~~~~~~~^~~
hidden.cpp:62:30: warning: comparison of integer expressions of different signedness: 'std::vector<int>::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare]
62 | while (O.size() + Z.size() < n)
| ~~~~~~~~~~~~~~~~~~~~^~~
hidden.cpp:25:17: warning: statement has no effect [-Wunused-value]
25 | #define DE(...) 0
| ^
hidden.cpp:70:2: note: in expansion of macro 'DE'
70 | DE(__LINE__);
| ^~
hidden.cpp:74:20: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
74 | for (int i = 0;i <= Z.size();++i) {
| ~~^~~~~~~~~~~
hidden.cpp:79:20: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
79 | for (int i = 0;i <= Z.size();++i) {
| ~~^~~~~~~~~~~
hidden.cpp:82:10: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
82 | if (i < Z.size())
| ~~^~~~~~~~~~
hidden.cpp:25:17: warning: statement has no effect [-Wunused-value]
25 | #define DE(...) 0
| ^
hidden.cpp:88:3: note: in expansion of macro 'DE'
88 | DE(zs);
| ^~
hidden.cpp:89:20: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
89 | for (int i = 0;i <= O.size();++i) {
| ~~^~~~~~~~~~~
hidden.cpp:94:20: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
94 | for (int i = 0;i <= O.size();++i) {
| ~~^~~~~~~~~~~
hidden.cpp:97:10: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
97 | if (i < O.size())
| ~~^~~~~~~~~~
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++)
| ~^~~~~~~~~~~~| # | Verdict | Execution time | Memory | Grader output |
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