Submission #1290483

#	Time	Username	Problem	Language	Result	Execution time	Memory
1290483		dirtblock	Xylophone (JOI18_xylophone)	C++20	Compilation error	0 ms	0 KiB

xylophone

#include<bits/stdc++.h>
#include "xylophone.h"

void solve(int n) {
	vector<int> a(n+1,0);
	a[1]=query(1,2);
	for(int i=2; i<=n; i++) {
		int x1=query(i,i+1);
		int x2=query(i-1,i+1);
		a[i]=a[i-1]+x1*((abs(x1-x2)==abs(a[i-1]-a[i-2]))==a[i-1]>a[i-2]? 1:-1);
	}
	int mn=0,mx=0;
	for(int i=1; i<=n; i++) {
		if(a[i]<a[mn]) mn=i;
		if(a[i]>a[mx]) mx=i;
	}
	bool ok=(mn<mx);
	for(int i=1; i<=n; i++) {
		answer(i,(ok? a[i-1]+1-mn:n-a[i-1]+mn));
	}

}

Compilation message (stderr)

xylophone.cpp: In function 'void solve(int)':
xylophone.cpp:5:9: error: 'vector' was not declared in this scope
    5 |         vector<int> a(n+1,0);
      |         ^~~~~~
xylophone.cpp:5:9: note: suggested alternatives:
In file included from /usr/include/c++/13/vector:66,
                 from /usr/include/c++/13/functional:64,
                 from /usr/include/x86_64-linux-gnu/c++/13/bits/stdc++.h:53,
                 from xylophone.cpp:1:
/usr/include/c++/13/bits/stl_vector.h:428:11: note:   'std::vector'
  428 |     class vector : protected _Vector_base<_Tp, _Alloc>
      |           ^~~~~~
/usr/include/c++/13/vector:86:13: note:   'std::pmr::vector'
   86 |       using vector = std::vector<_Tp, polymorphic_allocator<_Tp>>;
      |             ^~~~~~
xylophone.cpp:5:16: error: expected primary-expression before 'int'
    5 |         vector<int> a(n+1,0);
      |                ^~~
xylophone.cpp:6:9: error: 'a' was not declared in this scope
    6 |         a[1]=query(1,2);
      |         ^