#include "xylophone.h"
#include <bits/stdc++.h>
using namespace std;
static int ans[5001], pos[5001];
static int a[5001], b[5001];
static int n;
void print(){
for (int i = 1; i <= n; i++){
// cout << ans[i] << " ";
answer(i, ans[i]);
}
// cout << "\n";
}
void solve(int nn) {
n = nn;
// int value = query(1, N);
// for(int i = 1; i <= N; i++) {
// answer(i, i);
// }
for (int i = 1; i < n; i++){
a[i] = query(i, i + 1);
}
for (int i = 1; i < n - 1; i++){
b[i] = query(i, i + 2);
}
for (int i = 1; i <= n; i++){
ans[1] = i;
if (i + a[1] <= n){
ans[2] = i + a[1];
bool seen = false;
bool good = true;
for (int j = 3; j <= n; j++){
if (a[j - 2] + a[j - 1] == b[j - 2]) {
if (ans[j - 1] > ans[j - 2]){
ans[j] = ans[j - 1] + a[j - 1];
} else {
ans[j] = ans[j - 1] - a[j - 1];
}
} else {
if (ans[j - 1] > ans[j - 2]){
ans[j] = ans[j - 1] - a[j - 1];
} else {
ans[j] = ans[j - 1] + a[j - 1];
}
}
if (ans[j] < 1 || ans[j] > n){
good = false;
}
}
for (int j = 1; j <= n; j++){
if (ans[j] == 1) seen = true;
if (ans[j] == n && !seen) good = false;
}
vector <bool> st(n + 1, 0);
for (int i = 1; i <= n; i++){
st[ans[i]]++;
if (st[ans[i]] > 1) good = false;
}
if (good){
print();
return;
}
}
if (i - a[1] >= 1){
ans[2] = i - a[1];
bool seen = false;
bool good = true;
for (int j = 3; j <= n; j++){
if (a[j - 2] + a[j - 1] == b[j - 2]) {
if (ans[j - 1] > ans[j - 2]){
ans[j] = ans[j - 1] + a[j - 1];
} else {
ans[j] = ans[j - 1] - a[j - 1];
}
} else {
if (ans[j - 1] > ans[j - 2]){
ans[j] = ans[j - 1] - a[j - 1];
} else {
ans[j] = ans[j - 1] + a[j - 1];
}
}
if (ans[j] < 1 || ans[j] > n){
good = false;
}
}
for (int j = 1; j <= n; j++){
if (ans[j] == 1) seen = true;
if (ans[j] == n && !seen) good = false;
}
vector <bool> st(n + 1, 0);
for (int i = 1; i <= n; i++){
st[ans[i]]++;
if (st[ans[i]] > 1) good = false;
}
if (good){
print();
return;
}
}
}
}
Compilation message
xylophone.cpp: In function 'void solve(int)':
xylophone.cpp:68:27: error: no 'operator++(int)' declared for postfix '++' [-fpermissive]
68 | st[ans[i]]++;
| ~~~~~~~~~~^~
xylophone.cpp:111:27: error: no 'operator++(int)' declared for postfix '++' [-fpermissive]
111 | st[ans[i]]++;
| ~~~~~~~~~~^~
xylophone.cpp: At global scope:
xylophone.cpp:5:23: warning: 'pos' defined but not used [-Wunused-variable]
5 | static int ans[5001], pos[5001];
| ^~~
