#include <bits/stdc++.h>
template <class T>
using Vec = std::vector<T>;
#ifdef __APPLE__
int query(int, int);
void answer(int, int);
#endif
void solve(int N) {
Vec<Vec<int>> memo(N, Vec<int>(N, -1));
const auto ask = [&](int s, int t) {
if (memo[s][t] != -1) {
return memo[s][t];
}
return memo[s][t] = query(s + 1, t + 1);
};
const auto fill = [&](Vec<int> &vec) {
for (int i = 2; i < N; ++i) {
const auto a = ask(i - 2, i - 1);
const auto b = ask(i - 1, i);
const auto c = ask(i - 2, i);
if (vec[i - 2] < vec[i - 1]) {
if (a + b == c) {
vec[i] = vec[i - 1] + b;
}
else {
vec[i] = vec[i - 1] - b;
}
}
else {
if (a + b == c) {
vec[i] = vec[i - 1] - b;
}
else {
vec[i] = vec[i - 1] + b;
}
}
}
const auto min = std::min_element(vec.begin(), vec.end());
const auto max = std::max_element(vec.begin(), vec.end());
const auto val = *min;
for (auto &x: vec) {
x -= val;
x += 1;
}
return max - min > 0;
};
Vec<int> A(N);
A[1] = ask(0, 1);
if (fill(A)) {
for (int i = 0; i < N; ++i) {
answer(i + 1, A[i]);
}
return;
}
Vec<int> B(N);
B[1] = -ask(0, 1);
fill(B);
for (int i = 0; i < N; ++i) {
answer(i + 1, B[i]);
}
}
#ifdef __APPLE__
int Size, QueryCount;
Vec<int> Array, Answer;
Vec<Vec<int>> Query;
int query(int s, int t) {
QueryCount += 1;
return Query[s - 1][t - 1];
}
void answer(int i, int a) {
Answer[i - 1] = a;
}
int main() {
std::cin >> Size;
Array.resize(Size);
Answer.resize(Size);
Query.resize(Size);
for (auto &x: Array) {
std::cin >> x;
}
for (int i = 0; i < Size; ++i) {
Query[i].resize(Size);
int max = 0, min = Size + 1;
for (int j = i; j < Size; ++j) {
max = std::max(max, Array[j]);
min = std::min(min, Array[j]);
Query[i][j] = max - min;
}
}
solve(Size);
std::cout << "Number of queries: " << (double) QueryCount / (double) Size << "N\n";
std::cout << (Array == Answer ? "Correct" : "Wrong") << '\n';
for (auto x: Answer) {
std::cout << x << ' ';
}
std::cout << '\n';
}
#endif
Compilation message
xylophone.cpp: In lambda function:
xylophone.cpp:17:29: error: 'query' was not declared in this scope
17 | return memo[s][t] = query(s + 1, t + 1);
| ^~~~~
xylophone.cpp: In function 'void solve(int)':
xylophone.cpp:54:13: error: 'answer' was not declared in this scope
54 | answer(i + 1, A[i]);
| ^~~~~~
xylophone.cpp:62:9: error: 'answer' was not declared in this scope
62 | answer(i + 1, B[i]);
| ^~~~~~
