Submission #590493

#	Time	Username	Problem	Language	Result	Execution time	Memory
590493		karrigan	Xylophone (JOI18_xylophone)	C++14	Compilation error	0 ms	0 KiB

xylophone

#include<bits/stdc++.h>
#define fastio ios_base::sync_with_stdio(false);cin.tie(nullptr);
using namespace std;
int a[5009];
int pos[5009];
void solve(int n){
for (int i=1;i<=n;i++){
    cin>>a[i];
    pos[i]=0;
}
int l=1,r=n;
int pos1=1;
while (l<=r){
    int mid=(l+r)/2;
    int d=query(mid,n);
    if (d==n-1){
        l=mid+1;
        pos1=mid;
    }
    else {
        r=mid-1;
    }
}
a[pos1]=1;
pos[1]=1;
a[pos1+1]=query(pos1,pos1+1)+1;
pos[a[pos1+1]]=1;
if (pos1>1){
a[pos1-1]=query(pos1-1,pos1)+1;
pos[a[pos1-1]]=1;
}   
for (int i=pos1+2;i<=n;i++){
        int d=query(i-1,i);
        if (a[i-1]+d>n){
            a[i]=a[i-1]-d;
        }
        else if (a[i-1]-d<0){
            a[i]=a[i-1]+d;
        }
        if (a[i-1]+d<=n&&a[i-1]-d>0){
            if (pos[a[i-1]+d]==1){
                a[i]=a[i-1]-d;
            }
            else if (pos[a[i-1]-d]==1){
                a[i]=a[i-1]+d;
            }
            else if (pos[a[i-1]-d]==0&&pos[a[i-1]+d]==0){
                int rr=query(i-2,i);
                int l1=a[i-1]-d,l2=a[i-1]+d;
                if (max(l1,a[i-1],a[i-2])-min(l1,a[i-1],a[i-2])==rr){
                     a[i]=a[i-1]-d;
                }
                else {
                     a[i]=a[i-1]+d;
                }
            }
        }
        pos[a[i]]=1;
}
for (int i=pos1-2;i>=1;i--){
     int d=query(i,i+1);
        if (a[i+1]+d>n){
            a[i]=a[i+1]-d;
        }
        else if (a[i+1]-d<0){
            a[i]=a[i+1]+d;
        }
        if (a[i+1]+d<=n&&a[i+1]-d>0){
            if (pos[a[i+1]+d]==1){
                a[i]=a[i+1]-d;
            }
            else if (pos[a[i+1]-d]==1){
                a[i]=a[i+1]+d;
            }
            else if (pos[a[i+1]-d]==0&&pos[a[i+1]+d]==0){
                int rr=query(i+2,i);
                int l1=a[i+1]-d,l2=a[i+1]+d;
                if (max(l1,a[i+1],a[i+2])-min(l1,a[i+1],a[i+2])==rr){
                     a[i]=a[i+1]-d;
                }
                else {
                     a[i]=a[i+1]+d;
                }
            }
        }
        pos[a[i]]=1;
}
}
/*int main()
{
    fastio
    //freopen(".INP","r",stdin);
    //freopen(".OUT","w",stdout);
    
}*/

Compilation message (stderr)

xylophone.cpp: In function 'void solve(int)':
xylophone.cpp:15:11: error: 'query' was not declared in this scope
   15 |     int d=query(mid,n);
      |           ^~~~~
xylophone.cpp:26:11: error: 'query' was not declared in this scope
   26 | a[pos1+1]=query(pos1,pos1+1)+1;
      |           ^~~~~
xylophone.cpp:49:33: warning: unused variable 'l2' [-Wunused-variable]
   49 |                 int l1=a[i-1]-d,l2=a[i-1]+d;
      |                                 ^~
xylophone.cpp:77:33: warning: unused variable 'l2' [-Wunused-variable]
   77 |                 int l1=a[i+1]-d,l2=a[i+1]+d;
      |                                 ^~
In file included from /usr/include/c++/10/bits/char_traits.h:39,
                 from /usr/include/c++/10/ios:40,
                 from /usr/include/c++/10/istream:38,
                 from /usr/include/c++/10/sstream:38,
                 from /usr/include/c++/10/complex:45,
                 from /usr/include/c++/10/ccomplex:39,
                 from /usr/include/x86_64-linux-gnu/c++/10/bits/stdc++.h:54,
                 from xylophone.cpp:1:
/usr/include/c++/10/bits/stl_algobase.h: In instantiation of 'constexpr const _Tp& std::max(const _Tp&, const _Tp&, _Compare) [with _Tp = int; _Compare = int]':
xylophone.cpp:50:41:   required from here
/usr/include/c++/10/bits/stl_algobase.h:303:17: error: '__comp' cannot be used as a function
  303 |       if (__comp(__a, __b))
      |           ~~~~~~^~~~~~~~~~
/usr/include/c++/10/bits/stl_algobase.h: In instantiation of 'constexpr const _Tp& std::min(const _Tp&, const _Tp&, _Compare) [with _Tp = int; _Compare = int]':
xylophone.cpp:50:63:   required from here
/usr/include/c++/10/bits/stl_algobase.h:281:17: error: '__comp' cannot be used as a function
  281 |       if (__comp(__b, __a))
      |           ~~~~~~^~~~~~~~~~