#include<bits/stdc++.h>
#include "xylophone.h"
#define ll long long
#define all(v) begin(v), end(v)
#define pi pair<int, int>
#define vi vector<int>
using namespace std;
int a[5005];
int p1[5005], p2[5005];
bool try(int u, int v){
if(v < 1 || v > n) return ;
a[1] = u, a[2] = v;
for(int i = 3; i <= n; i++){
int d1 = p1[i], d2 = p2[i], d3 = abs(a[i-2] - a[i-1]);
if(a[i-2] > a[i-1]){
if(d3 + d1 == d2){
a[i] = a[i-1] - d1;
}
else if(d2 == d3){
a[i] = a[i-1] + d1;
}
else{
a[i] = a[i-1] + d2;
}
}
else{
if(d1 == d2){
a[i] = a[i-1] - d1;
}
else if(d3 == d2){
a[i] = a[i-1] + d1;
}
else{
a[i] = a[i-1] + d2;
}
}
}
vector<bool> ch(n, false);
for(int i = 1; i <= n; i++){
if(ch[a[i]-1]) return false;
ch[a[i]-1] = true;
}
return true;
}
void solve(int n){
int d = query(1, 2);
for(int i = 3; i <= n; i++){
p1[i] = query(i-1, i), p2[i] = query(i-2, i);
}
for(int v1 = 1; v1 <= n; i++){
for(int z = -d; z <= d; z+=2*d){
if(try(v1, v1+z)){
for(int i = 1; i <= n; i++) answer(i, a[i]);
return ;
}
}
}
}
Compilation message
xylophone.cpp:11:6: error: expected unqualified-id before 'try'
11 | bool try(int u, int v){
| ^~~
xylophone.cpp: In function 'void solve(int)':
xylophone.cpp:52:30: error: 'i' was not declared in this scope
52 | for(int v1 = 1; v1 <= n; i++){
| ^
xylophone.cpp:54:16: error: expected primary-expression before 'try'
54 | if(try(v1, v1+z)){
| ^~~
xylophone.cpp:54:16: error: expected ')' before 'try'
54 | if(try(v1, v1+z)){
| ~^~~
| )
