#include <bits/stdc++.h>
//#include "grader.cpp"
#include "xylophone.h"
using namespace std;
int Ar[5050];
bool mark[5050];
void solve(int N) {
int idx;
int l = 1, r = N;
while (l < r) {
int mid = (l+r)/2;
if (query(mid+1, N) == N-1) l = mid+1;
else r = mid;
}
idx = l;
Ar[idx] = 1;
mark[idx];
// l = idx1+1, r = N;
// while (l < r) {
// int mid = (l+r)/2;
// if (query(1, mid) == N-1) r = mid;
// else l = mid+1;
// }
// idxn = l;
for (int i = idx+1; i <= N; ++i) {
int dif = query(i-1, i), cur;
if (Ar[i-1]+dif>N || mark[Ar[i-1]+dif]) {
cur = Ar[i-1]-dif;
}
else if (Ar[i-1]-dif<1 || mark[Ar[i-1]-dif]) {
cur = Ar[i-1]+dif;
}
else {
int dif2 = query(i-2, i);
if (Ar[i-2] > Ar[i-1]+dif){
if (Ar[i-2] - Ar[i-1] == dif2) cur = Ar[i-1]+dif;
}
if (Ar[i-2] < Ar[i-1]+dif) {
if (Ar[i-1]+dif - min(Ar[i-2], A[i-1]) == dif2) cur = Ar[i-1]+dif;
}
if (Ar[i-2] > Ar[i-1]-dif){
if (max(Ar[i-2], A[i-1]) - Ar[i-1]+dif == dif2) cur = Ar[i-1]-dif;
}
if (Ar[i-2] < Ar[i-1]-dif) {
if (Ar[i-1] - Ar[i-2] == dif2) cur = Ar[i-1]-dif;
}
}
Ar[i] = cur;
mark[cur] = 1;
}
for (int i = idx-1; i >= 1; --i) {
int dif = query(i, i+1), cur;
if (Ar[i+1]+dif>N || mark[Ar[i+1]+dif]) {
cur = Ar[i+1]-dif;
}
else if (Ar[i+1]-dif<1 || mark[Ar[i+1]-dif]) {
cur = Ar[i+1]+dif;
}
else {
int dif2 = query(i-2, i);
if (Ar[i+2] > Ar[i+1]+dif){
if (Ar[i+2] - Ar[i+1] == dif2) cur = Ar[i+1]+dif;
}
if (Ar[i+2] < Ar[i+1]+dif) {
if (Ar[i+1]+dif - min(Ar[i+2], A[i+1]) == dif2) cur = Ar[i+1]+dif;
}
if (Ar[i+2] > Ar[i+1]-dif){
if (max(Ar[i+2], A[i+1]) - Ar[i+1]+dif == dif2) cur = Ar[i+1]-dif;
}
if (Ar[i+2] < Ar[i+1]-dif) {
if (Ar[i+1] - Ar[i+2] == dif2) cur = Ar[i=1]-dif;
}
}
Ar[i] = cur;
mark[cur] = 1;
}
for (int i = 1; i <= N; ++i) {
answer(i, Ar[i]);
}
}
Compilation message
xylophone.cpp: In function 'void solve(int)':
xylophone.cpp:19:13: warning: statement has no effect [-Wunused-value]
19 | mark[idx];
| ~~~~~~~~^
xylophone.cpp:42:48: error: 'A' was not declared in this scope
42 | if (Ar[i-1]+dif - min(Ar[i-2], A[i-1]) == dif2) cur = Ar[i-1]+dif;
| ^
xylophone.cpp:45:34: error: 'A' was not declared in this scope
45 | if (max(Ar[i-2], A[i-1]) - Ar[i-1]+dif == dif2) cur = Ar[i-1]-dif;
| ^
xylophone.cpp:69:48: error: 'A' was not declared in this scope
69 | if (Ar[i+1]+dif - min(Ar[i+2], A[i+1]) == dif2) cur = Ar[i+1]+dif;
| ^
xylophone.cpp:72:34: error: 'A' was not declared in this scope
72 | if (max(Ar[i+2], A[i+1]) - Ar[i+1]+dif == dif2) cur = Ar[i+1]-dif;
| ^
