xylophone.cpp: In function 'void solve(int)':
xylophone.cpp:9:19: error: 'query' was not declared in this scope
9 | a[1] = 0; a[2] = query(1, 2);
| ^~~~~
xylophone.cpp:13:6: error: 'temp2' was not declared in this scope; did you mean 'temp1'?
13 | if(temp2 != temp1 + a[i - 2] - a[i - 1] && a[i-2] > a[i-1] || temp2 == temp1 + a[i - 1] - a[i - 2] && a[i-2] < a[i-1]) a[i] = a[i - 1] + temp1;
| ^~~~~
| temp1
xylophone.cpp:24:30: error: 'answer' was not declared in this scope
24 | for(int i = 1; i <= n; ++i) answer(i, a[i] - pos + 1);
| ^~~~~~