#include <cstdio>
#include <cstdlib>
#include <bits/stdc++.h>
#include "xylophone.h"
using namespace std;
#define F first
#define S second
#define FOR(i,a,b) for (auto i = (a); i <= (b); ++i)
#define NFOR(i,a,b) for(auto i = (a); i >= (b); --i)
#define all(x) (x).begin(), (x).end()
#define sz(x) int(x.size())
#define mp(i,a) make_pair(i,a)
#define pb(a) push_back(a)
#define bit(x,b) (x&(1LL<<b))
void solve(int N)
{
int n=N;
int arr[n],arr1[n];
for(int i=1;i<n;++i)
arr[i]=query(i,i+1);
for(int i=1;i<n-1;++i)
arr1[i]=query(i,i+2);
int l=1,l1=0,mi=0,mi1=0;
int arr2[n+1],arr3[n+1];
arr2[1]=0;
arr2[2]=arr[1];
arr3[1]=0;
arr3[2]=-arr[1];
for(int i=2;i<n;++i)
{
if(arr1[i-1]!=arr[i-1]+arr[i])
{
if(l==1)
arr2[i+1]=arr2[i]-arr[i];
else
arr2[i+1]=arr2[i]+arr[i];
l^=1;
}
else
{
if(l==1)
arr2[i+1]=arr2[i]+arr[i];
else
arr2[i+1]=arr2[i]-arr[i];
}
if(arr1[i-1]!=arr[i-1]+arr[i])
{
if(l1==1)
arr3[i+1]=arr3[i]-arr[i];
else
arr3[i+1]=arr3[i]+arr[i];
l1^=1;
}
else
{
if(l1==1)
arr3[i+1]=arr3[i]+arr[i];
else
arr3[i+1]=arr3[i]-arr[i];
}
}
for(int i=1;i<=n;++i)
{
mi=min(mi,arr2[i]);
mi1=min(mi1,arr3[i]);
}
mi=-mi;
mi1=-mi1;
mi++;
mi1++;
ii f,s;
int ch=1,ch1=1;
set<int> se,se1;
for(int i=1;i<=n;++i)
{
arr2[i]+=mi;
se.insert(arr2[i]);
arr3[i]+=mi1;
se1.insert(arr3[i]);
if(arr2[i]==1)
f.F=i;
else if(arr2[i]==n)
f.S=i;
if(arr3[i]==1)
s.F=i;
else if(arr3[i]==n)
s.S=i;
}
if(se.size()!=n||(*(--se.end()))!=n)
ch=0;
if(se1.size()!=n||(*(--se1.end()))!=n)
ch1=0;
if(ch==1&&ch1==1)
{
if(f.F==s.F)
{
int r;
if(s.S>=f.S)
{
r=query(min(f.F,f.S),max(f.F,f.S));
if(r==n-1)
ch1=0;
else
ch=0;
}
else
{
r=query(min(s.F,s.S),max(s.F,s.S));
if(r==n-1)
ch=0;
else
ch1=0;
}
}
else
{
int r=query(min(max(f,s).F,max(f,s).S),max(max(f,s).F,max(f,s).S));
if(max(f,s)==f)
{
if(r==n-1)
ch1=0;
else
ch=0;
}
else
{
if(r==n-1)
ch=0;
else
ch1=0;
}
}
}
if(ch==0)
{
for(int i=1;i<=n;++i)
answer(i,arr2[i]);
}
else
{
for(int i=1;i<=n;++i)
answer(i,arr3[i]);
}
}
Compilation message
xylophone.cpp: In function 'void solve(int)':
xylophone.cpp:71:3: error: 'ii' was not declared in this scope
ii f,s;
^~
xylophone.cpp:71:3: note: suggested alternative: 'mi'
ii f,s;
^~
mi
xylophone.cpp:81:7: error: 'f' was not declared in this scope
f.F=i;
^
xylophone.cpp:83:7: error: 'f' was not declared in this scope
f.S=i;
^
xylophone.cpp:85:7: error: 's' was not declared in this scope
s.F=i;
^
xylophone.cpp:87:7: error: 's' was not declared in this scope
s.S=i;
^
xylophone.cpp:89:15: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
if(se.size()!=n||(*(--se.end()))!=n)
~~~~~~~~~^~~
xylophone.cpp:91:16: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
if(se1.size()!=n||(*(--se1.end()))!=n)
~~~~~~~~~~^~~
xylophone.cpp:95:8: error: 'f' was not declared in this scope
if(f.F==s.F)
^
xylophone.cpp:95:13: error: 's' was not declared in this scope
if(f.F==s.F)
^
xylophone.cpp:95:13: note: suggested alternative: 'se'
if(f.F==s.F)
^
se
