#include <bits/stdc++.h>
using namespace std;
#ifdef LOCAL
#include "debug.h"
#else
#define debug(...) 42
#endif
void solve(int N) {
vector<int> A(N), qry(N);
A[1] = qry[1] = query(1, 2);
for (int i = 2; i < N; ++i) {
qry[i] = query(i, i + 1);
int a = A[i - 2], b = A[i - 1], &c = A[i];
int AB = qry[i - 1], BC = qry[i], AC = query(i - 1, i + 1);
if (AB == AC) {
if (a < b) {
c = b - BC;
} else {
c = b + BC;
}
} else if (BC == AC) {
if (a < b) {
c = b - BC;
} else {
c = b + BC;
}
} else {
if (a < b) {
c = b + BC;
} else {
c = b - BC;
}
}
}
vector<int> ord(N); iota(ord.begin(), ord.end(), 0);
sort(ord.begin(), ord.end(), [&](int u, int v) {
return A[u] < A[v];
});
if (ord[0] > ord.back()) {
reverse(ord.begin(), ord.end());
}
for (int i = 0; i < N; ++i) {
answer(ord[i] + 1, i + 1);
}
}
Compilation message
xylophone.cpp: In function 'void solve(int)':
xylophone.cpp:13:18: error: 'query' was not declared in this scope; did you mean 'qry'?
13 | A[1] = qry[1] = query(1, 2);
| ^~~~~
| qry
xylophone.cpp:46:3: error: 'answer' was not declared in this scope
46 | answer(ord[i] + 1, i + 1);
| ^~~~~~
