#include<xylophone.h>
#include<bits/stdc++.h>
typedef long long ll;
using namespace std;
const int maxn=200005;
int n;
int a[maxn];
void solve(int n) {
a[1]=0;
a[2]=query(1,2);
for (int i=3; i<=n; i++) {
int x=query(1,i);
int y=query(i-1,i);
if (x!=y+abs(a[i-1]-a[i-2]) && a[i-2]>a[i-1]) {
a[i]=a[i-1]+y;
} else if (x==y+abs(a[i-1]-a[i-2]) && a[i-2]<a[i-1]) {
a[i]=a[i-1]+y;
} else {
a[i]=a[i-1]-y;
}
}
int minn=1e9;
int mann=-1e9;
for (int i=1; i<=n; i++) {
minn=min(minn,a[i]);
mann=max(mann,a[i]);
}
int pos_min;
int pos_max;
for (int i=1; i<=n; i++) {
if (a[i]==minn) {
pos_min=i;
}
if (a[i]==mann) {
pos_max=i;
}
}
if (pos_min>pos_max) {
for (int i=1; i<=n; i++) {
a[i]*=-1;
minn*=-1;
maxn*=-1;
}
}
for (int i=1; i<=n; i++) {
answer(i,a[i]-minn+1);
}
}
Compilation message
xylophone.cpp: In function 'void solve(int)':
xylophone.cpp:45:17: error: assignment of read-only variable 'maxn'
45 | maxn*=-1;
| ~~~~^~~~
