#include "xylophone.h"
#include <bits/stdc++.h>
using namespace std;
int a[5001];
void solve(int n) {
a[1] = 0;
a[2] = query(1, 2);
for(int i = 2; i < n; i++){
int x = query(i, i + 1), y = query(i - 1, i + 1);
a[i + 1] = a[i] + x * (a[i] - a[i - 1] < 0 ? 1 : -1) * (y == x + abs(a[i] - a[i - 1]) ? -1 : 1);
}
int mn = *min_element(a + 1, a + n + 1);
int u, v;
for(int i = 1; i <= n; ++i){
A[i] -= mn;
if(a[i] == 0) u = i;
if(a[i] == n - 1) v = i;
}
bool flag = u < v;
for(int i = 1; i <= n; ++i) answer(i, flag ? a[i] + 1 : n - a[i]);
}
Compilation message
xylophone.cpp: In function 'void solve(int)':
xylophone.cpp:17:3: error: 'A' was not declared in this scope
17 | A[i] -= mn;
| ^
