//#include "xylophone.h"
#include<iostream>
int ans[5005+5],val1[5005+4],val2[5005+4],mx,id1,id2,value[5005+4];
static int A[5000];
void solve(int N) {
/*l=2; r=N;
while(l<=r){
int mid=(l+r)/2;
if(query(mid,N)!=N-1){
ind=mid-1; r=mid-1;
}
else l=mid+1;
}
ans[ind]=1;
if(ind!=n) ans[ind+1]=query(ind,ind+1)+1;
if(ind!=1) ans[ind-1]=query(ind,ind-1)+1;
*/
value[3]=query(1,2);
ans[1]=0; ans[2]=value[3]; mx=value[3]; id1=1;id2=2;
int mn=0;
for(int k=3;k<=N;k++){
val1[k]=query(k-2,k);
val2[k]=query(k-1,k);
if(ans[k-1]<ans[k-2]){
if(val1[k]==value[k]) ans[k]=ans[k-1]+val2[k];
else if(val1[k]==val2[k]) ans[k]=ans[k-1]+val2[k];
else ans[k]=ans[k-1]-val2[k];
}
else {
if(value[k]==val1[k] || val1[k]==val2[k]) ans[k]=ans[k-1]-val2[k];
else ans[k]=ans[k-1]+val2[k];
}
value[k+1]=val2[k];
if(ans[k]<mn)mn=ans[k],id1=k;
if(ans[k]>mx)mx=ans[k],id2=k;
}
if(id1>id2){
mn=0; std::swap(ans[1],ans[2]);
for(int k=3;k<=N;k++){
if(ans[k-1]<ans[k-2]){
if(val1[k]==value[k]) ans[k]=ans[k-1]+val2[k];
else if(val1[k]==val2[k]) ans[k]=ans[k-1]+val2[k];
else ans[k]=ans[k-1]-val2[k];
}
else {
if(value[k]==val1[k] || val1[k]==val2[k]) ans[k]=ans[k-1]-val2[k];
else ans[k]=ans[k-1]+val2[k];
}
value[k+1]=val2[k];
if(ans[k]<mn)mn=ans[k];
}
}
for(int k=1;k<=N;k++){
ans[k]+=1-mn;
answer(k,ans[k]);
}
}
Compilation message
xylophone.cpp: In function 'void solve(int)':
xylophone.cpp:22:12: error: 'query' was not declared in this scope
22 | value[3]=query(1,2);
| ^~~~~
xylophone.cpp:62:3: error: 'answer' was not declared in this scope
62 | answer(k,ans[k]);
| ^~~~~~
xylophone.cpp: At global scope:
xylophone.cpp:5:12: warning: 'A' defined but not used [-Wunused-variable]
5 | static int A[5000];
| ^
