Submission #792973

#	Submission time	Handle	Problem	Language	Result	Execution time	Memory
792973	2023-07-25T11:52:15 Z	MODDI	Gondola (IOI14_gondola)	C++14	Compilation error	0 ms	0 KB

gondola

#include "gondola.h"
//#include "grader.cpp"
#include <bits/stdc++.h>
using namespace std;
#define pb push_back
#define mp make_pair
typedef long long ll;
typedef pair<long long, long long> pll;
typedef pair<int,int> pii;
typedef vector<int> vi;
typedef vector<ll> vl;
int valid(int n, int inputSeq[])
{
	int pos = -1;
	for(int i = 0; i < n; i++){
		if(inputSeq[i] == 1){
			pos = i;
			break;
		}
	}
	bool seq = true;
	int at = 1, lim = pos;
	while(pos < n){
		if(inputSeq[pos] == at){
			pos++;
			at++;
		}
		else{
			seq = false;
			break;
		}
	}
	if(!seq)	return 0;
	pos = 0;
	while(pos < lim){
		if(inputSeq[pos] == at){
			pos++;
			at++;
		}
		else{
			seq = false;
			break;
		}
	}
	if(!seq) return 0;
	return 1;
}

int replacement(int n, int gondolaSeq[], int replacementSeq[])
{
	int pos = -1;
	for(int i = 0; i < n; i++){
		if(gondolaSeq[i] >= 1 && gondolaSeq[i] <= n){
			pos = i;
			break;
		}
	}
	if(pos == -1){
		vector<pii> arr(n);
		for(int i = 0; i < n; i++){
			arr[i] = mp(gondolaSeq[i], i);
		}
		sort(arr.begin(), arr.end());
		int j = 0, rez = 0, here = 1, at = n + 1;
		int pos = arr[0].second, need[n];
		for(int i = pos; i < n; i++)	need[i] = here++;
		for(int i = 0; i < pos; i++)	need[i] = here++;
		for(int i = 0; i < (int)arr.size(); i++){
			int where = arr[i].second, val = arr[i].first;
			replacementSeq[j++] = need[where];
			rez++;
			while(at < val){
				replacementSeq[j++] = at++;
				rez++;
			}
			at++;
		}
		return rez;
	}
	else{
		int need[n];
		bool done[n+1];
		memset(done, false, sizeof done);
		int at = gondolaSeq[pos];
		while(at <= n){
			at++;
			pos++; pos%=n;
		}
		int here = 1;
		for(int i = pos; i < n; i++)	need[i] = here++;
		for(int i = 0; i < pos; i++)	need[i] = here++;
		vector<pii> arr;
		for(int i = 0; i < n; i++){
			if(need[i] == gondolaSeq[i])	done[need[i]] = true;
			else{
				arr.pb(mp(gondolaSeq[i], i));
			}
		}
		sort(arr.begin(), arr.end());
		at = n + 1;
		int j = 0, rez = 0;
		for(int i = 0; i < (int)arr.size(); i++){
			int where = arr[i].second, val = arr[i].first;
			replacementSeq[j++] = need[where];
			rez++;
			while(at < val){
				replacementSeq[j++] = at++;
				rez++;
			}
			at++;
		}
		return rez;
	}
}
const int mod = 1e9 + 9;
ll calculate(ll step, ll base){
	ll res = 1;
	base %= mod;
	if(base == 0)	return 0;
	while(step > 0){
		if(step & 1)
			res = (res * base) % mod;
			
		step = step>>1;
		base = (base*base) % mod;
	}
	return res;
}
int countReplacement(int n, int inputSeq[])
{
	//int checker = valid(n, inputSeq);
	vector<pii> arr;
	int pos = -1;
	for(int i = 0; i < n; i++){
		arr.pb(mp(inputSeq[i], i));
		if(inputSeq[i] >= 1 && inputSeq[i] <= n)	pos = i;
	}
	if(pos == -1)	assert(false);
	int at = inputSeq[pos];
	while(at <= n){
		at++;
		pos++;
		pos%=n;
	}
	int skipped = 0;
	at=1;
	bool ok = true;
	for(int i = pos; i < n; i++){
		if(inputSeq[i] == at+skipped){
			at++;
			skipped = 0;
		}
		else if(inputSeq[i] <= n && at + skipped > inputSeq[i]){
			ok = false;
		}
		else
			skipped++;
	}
	//cout<<"OK: "<<ok<<endl;
	if(!ok)	return 0;
	bool sub1 = true;
	for(int i = 0; i < n; i++){
		if(inputSeq[i] >= 1 && inputSeq[i] <= n + 3)	continue;
		else sub1 = false;
	}
	if(n > 50)	sub1 = false;
	if(sub1){
		bool n1 = false, n2 = false, n3 = false;
		for(int i = 0; i < n; i++){
			if(inputSeq[i] == n+1)	n1 = true;
			if(inputSeq[i] == n+2) 	n2 = true;
			if(inputSeq[i] == n+3)	n3 = true;
		}
		if(!n1 && n2 && n3)	return 2;
		else 	return 1;
	}
	else if(n <= 50){
		//cout<<"HERE: "<<endl;
		ll ways = 1;
		int at = n+1;
		while(at <= 100){
			bool ima = false;
			for(int i = 0; i < n; i++){
				if(inputSeq[i] == at)	ima = true;
			}
			if(ima)	at++;
			else{
				int cnt = 0;
				for(int i = 0; i < n; i++){
					if(inputSeq[i] > at)	cnt++;
				}
				if(cnt ==0)	break;
				ways *= cnt;
				ways %= mod;
				at++;
			}
		}
		return (int)ways;
	}
	vi arr;
	for(int i = 0; i < inputSeq[i]; i++){
		if(inputSeq[i] <= n)	continue;
		else arr.pb(inputSeq[i]);
	}
	int at = n + 1;
	ll ways = 1;
	sort(arr.begin(), arr.end());
	for(int i = 0; i < (int)arr.size(); i++){
		while(at < arr[i]){
			ways *= ((int)arr.size()-  i);
			if(ways >= mod)	ways -= mod;
		}
	}
	return (int)ways;
}

Compilation message

gondola.cpp: In function 'int countReplacement(int, int*)':
gondola.cpp:200:5: error: conflicting declaration 'vi arr'
  200 |  vi arr;
      |     ^~~
gondola.cpp:132:14: note: previous declaration as 'std::vector<std::pair<int, int> > arr'
  132 |  vector<pii> arr;
      |              ^~~
gondola.cpp:203:26: error: no matching function for call to 'std::vector<std::pair<int, int> >::push_back(int&)'
  203 |   else arr.pb(inputSeq[i]);
      |                          ^
In file included from /usr/include/c++/10/vector:67,
                 from /usr/include/c++/10/queue:61,
                 from /usr/include/x86_64-linux-gnu/c++/10/bits/stdc++.h:86,
                 from gondola.cpp:3:
/usr/include/c++/10/bits/stl_vector.h:1187:7: note: candidate: 'void std::vector<_Tp, _Alloc>::push_back(const value_type&) [with _Tp = std::pair<int, int>; _Alloc = std::allocator<std::pair<int, int> >; std::vector<_Tp, _Alloc>::value_type = std::pair<int, int>]'
 1187 |       push_back(const value_type& __x)
      |       ^~~~~~~~~
/usr/include/c++/10/bits/stl_vector.h:1187:35: note:   no known conversion for argument 1 from 'int' to 'const value_type&' {aka 'const std::pair<int, int>&'}
 1187 |       push_back(const value_type& __x)
      |                 ~~~~~~~~~~~~~~~~~~^~~
/usr/include/c++/10/bits/stl_vector.h:1203:7: note: candidate: 'void std::vector<_Tp, _Alloc>::push_back(std::vector<_Tp, _Alloc>::value_type&&) [with _Tp = std::pair<int, int>; _Alloc = std::allocator<std::pair<int, int> >; std::vector<_Tp, _Alloc>::value_type = std::pair<int, int>]'
 1203 |       push_back(value_type&& __x)
      |       ^~~~~~~~~
/usr/include/c++/10/bits/stl_vector.h:1203:30: note:   no known conversion for argument 1 from 'int' to 'std::vector<std::pair<int, int> >::value_type&&' {aka 'std::pair<int, int>&&'}
 1203 |       push_back(value_type&& __x)
      |                 ~~~~~~~~~~~~~^~~
gondola.cpp:205:6: error: redeclaration of 'int at'
  205 |  int at = n + 1;
      |      ^~
gondola.cpp:139:6: note: 'int at' previously declared here
  139 |  int at = inputSeq[pos];
      |      ^~
gondola.cpp:209:12: error: no match for 'operator<' (operand types are 'int' and '__gnu_cxx::__alloc_traits<std::allocator<std::pair<int, int> >, std::pair<int, int> >::value_type' {aka 'std::pair<int, int>'})
  209 |   while(at < arr[i]){
In file included from /usr/include/c++/10/regex:62,
                 from /usr/include/x86_64-linux-gnu/c++/10/bits/stdc++.h:110,
                 from gondola.cpp:3:
/usr/include/c++/10/bits/regex.h:1075:5: note: candidate: 'template<class _BiIter> bool std::__cxx11::operator<(const std::__cxx11::sub_match<_BiIter>&, const std::__cxx11::sub_match<_BiIter>&)'
 1075 |     operator<(const sub_match<_BiIter>& __lhs, const sub_match<_BiIter>& __rhs)
      |     ^~~~~~~~
/usr/include/c++/10/bits/regex.h:1075:5: note:   template argument deduction/substitution failed:
gondola.cpp:209:19: note:   mismatched types 'const std::__cxx11::sub_match<_BiIter>' and 'int'
  209 |   while(at < arr[i]){
      |                   ^
In file included from /usr/include/c++/10/regex:62,
                 from /usr/include/x86_64-linux-gnu/c++/10/bits/stdc++.h:110,
                 from gondola.cpp:3:
/usr/include/c++/10/bits/regex.h:1156:5: note: candidate: 'template<class _Bi_iter, class _Ch_traits, class _Ch_alloc> bool std::__cxx11::operator<(std::__cxx11::__sub_match_string<_Bi_iter, _Ch_traits, _Ch_alloc>&, const std::__cxx11::sub_match<_BiIter>&)'
 1156 |     operator<(const __sub_match_string<_Bi_iter, _Ch_traits, _Ch_alloc>& __lhs,
      |     ^~~~~~~~
/usr/include/c++/10/bits/regex.h:1156:5: note:   template argument deduction/substitution failed:
gondola.cpp:209:19: note:   mismatched types 'std::__cxx11::__sub_match_string<_Bi_iter, _Ch_traits, _Ch_alloc>' and 'int'
  209 |   while(at < arr[i]){
      |                   ^
In file included from /usr/include/c++/10/regex:62,
                 from /usr/include/x86_64-linux-gnu/c++/10/bits/stdc++.h:110,
                 from gondola.cpp:3:
/usr/include/c++/10/bits/regex.h:1249:5: note: candidate: 'template<class _Bi_iter, class _Ch_traits, class _Ch_alloc> bool std::__cxx11::operator<(const std::__cxx11::sub_match<_BiIter>&, std::__cxx11::__sub_match_string<_Bi_iter, _Ch_traits, _Ch_alloc>&)'
 1249 |     operator<(const sub_match<_Bi_iter>& __lhs,
      |     ^~~~~~~~
/usr/include/c++/10/bits/regex.h:1249:5: note:   template argument deduction/substitution failed:
gondola.cpp:209:19: note:   mismatched types 'const std::__cxx11::sub_match<_BiIter>' and 'int'
  209 |   while(at < arr[i]){
      |                   ^
In file included from /usr/include/c++/10/regex:62,
                 from /usr/include/x86_64-linux-gnu/c++/10/bits/stdc++.h:110,
                 from gondola.cpp:3:
/usr/include/c++/10/bits/regex.h:1323:5: note: candidate: 'template<class _Bi_iter> bool std::__cxx11::operator<(const typename std::iterator_traits<_Iter>::value_type*, const std::__cxx11::sub_match<_BiIter>&)'
 1323 |     operator<(typename iterator_traits<_Bi_iter>::value_type const* __lhs,
      |     ^~~~~~~~
/usr/include/c++/10/bits/regex.h:1323:5: note:   template argument deduction/substitution failed:
gondola.cpp:209:19: note:   '__gnu_cxx::__alloc_traits<std::allocator<std::pair<int, int> >, std::pair<int, int> >::value_type' {aka 'std::pair<int, int>'} is not derived from 'const std::__cxx11::sub_match<_BiIter>'
  209 |   while(at < arr[i]){
      |                   ^
In file included from /usr/include/c++/10/regex:62,
                 from /usr/include/x86_64-linux-gnu/c++/10/bits/stdc++.h:110,
                 from gondola.cpp:3:
/usr/include/c++/10/bits/regex.h:1417:5: note: candidate: 'template<class _Bi_iter> bool std::__cxx11::operator<(const std::__cxx11::sub_match<_BiIter>&, const typename std::iterator_traits<_Iter>::value_type*)'
 1417 |     operator<(const sub_match<_Bi_iter>& __lhs,
      |     ^~~~~~~~
/usr/include/c++/10/bits/regex.h:1417:5: note:   template argument deduction/substitution failed:
gondola.cpp:209:19: note:   mismatched types 'const std::__cxx11::sub_match<_BiIter>' and 'int'
  209 |   while(at < arr[i]){
      |                   ^
In file included from /usr/include/c++/10/regex:62,
                 from /usr/include/x86_64-linux-gnu/c++/10/bits/stdc++.h:110,
                 from gondola.cpp:3:
/usr/include/c++/10/bits/regex.h:1492:5: note: candidate: 'template<class _Bi_iter> bool std::__cxx11::operator<(const typename std::iterator_traits<_Iter>::value_type&, const std::__cxx11::sub_match<_BiIter>&)'
 1492 |     operator<(typename iterator_traits<_Bi_iter>::value_type const& __lhs,
      |     ^~~~~~~~
/usr/include/c++/10/bits/regex.h:1492:5: note:   template argument deduction/substitution failed:
gondola.cpp:209:19: note:   '__gnu_cxx::__alloc_traits<std::allocator<std::pair<int, int> >, std::pair<int, int> >::value_type' {aka 'std::pair<int, int>'} is not derived from 'const std::__cxx11::sub_match<_BiIter>'
  209 |   while(at < arr[i]){
      |                   ^
In file included from /usr/include/c++/10/regex:62,
                 from /usr/include/x86_64-linux-gnu/c++/10/bits/stdc++.h:110,
                 from gondola.cpp:3:
/usr/include/c++/10/bits/regex.h:1592:5: note: candidate: 'template<class _Bi_iter> bool std::__cxx11::operator<(const std::__cxx11::sub_match<_BiIter>&, const typename std::iterator_traits<_Iter>::value_type&)'
 1592 |     operator<(const sub_match<_Bi_iter>& __lhs,
      |     ^~~~~~~~
/usr/include/c++/10/bits/regex.h:1592:5: note:   template argument deduction/substitution failed:
gondola.cpp:209:19: note:   mismatched types 'const std::__cxx11::sub_match<_BiIter>' and 'int'
  209 |   while(at < arr[i]){
      |                   ^
In file included from /usr/include/c++/10/bits/stl_algobase.h:64,
                 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 gondola.cpp:3:
/usr/include/c++/10/bits/stl_pair.h:489:5: note: candidate: 'template<class _T1, class _T2> constexpr bool std::operator<(const std::pair<_T1, _T2>&, const std::pair<_T1, _T2>&)'
  489 |     operator<(const pair<_T1, _T2>& __x, const pair<_T1, _T2>& __y)
      |     ^~~~~~~~
/usr/include/c++/10/bits/stl_pair.h:489:5: note:   template argument deduction/substitution failed:
gondola.cpp:209:19: note:   mismatched types 'const std::pair<_T1, _T2>' and 'int'
  209 |   while(at < arr[i]){
      |                   ^
In file included from /usr/include/c++/10/bits/stl_algobase.h:67,
                 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 gondola.cpp:3:
/usr/include/c++/10/bits/stl_iterator.h:366:5: note: candidate: 'template<class _Iterator> bool std::operator<(const std::reverse_iterator<_Iterator>&, const std::reverse_iterator<_Iterator>&)'
  366 |     operator<(const reverse_iterator<_Iterator>& __x,
      |     ^~~~~~~~
/usr/include/c++/10/bits/stl_iterator.h:366:5: note:   template argument deduction/substitution failed:
gondola.cpp:209:19: note:   mismatched types 'const std::reverse_iterator<_Iterator>' and 'int'
  209 |   while(at < arr[i]){
      |                   ^
In file included from /usr/include/c++/10/bits/stl_algobase.h:67,
                 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 gondola.cpp:3:
/usr/include/c++/10/bits/stl_iterator.h:404:5: note: candidate: 'template<class _IteratorL, class _IteratorR> bool std::operator<(const std::reverse_iterator<_Iterator>&, const std::reverse_iterator<_IteratorR>&)'
  404 |     operator<(const reverse_iterator<_IteratorL>& __x,
      |     ^~~~~~~~
/usr/include/c++/10/bits/stl_iterator.h:404:5: note:   template argument deduction/substitution failed:
gondola.cpp:209:19: note:   mismatched types 'const std::reverse_iterator<_Iterator>' and 'int'
  209 |   while(at < arr[i]){
      |                   ^
In file included from /usr/include/c++/10/bits/stl_algobase.h:67,
                 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 gondola.cpp:3:
/usr/include/c++/10/bits/stl_iterator.h:1451:5: note: candidate: 'template<class _IteratorL, class _IteratorR> bool std::operator<(const std::move_iterator<_IteratorL>&, const std::move_iterator<_IteratorR>&)'
 1451 |     operator<(const move_iterator<_IteratorL>& __x,
      |     ^~~~~~~~
/usr/include/c++/10/bits/stl_iterator.h:1451:5: note:   template argument deduction/substitution failed:
gondola.cpp:209:19: note:   mismatched types 'const std::move_iterator<_IteratorL>' and 'int'
  209 |   while(at < arr[i]){
      |                   ^
In file included from /usr/include/c++/10/bits/stl_algobase.h:67,
                 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 gondola.cpp:3:
/usr/include/c++/10/bits/stl_iterator.h:1507:5: note: candidate: 'template<class _Iterator> bool std::operator<(const std::move_iterator<_IteratorL>&, const std::move_iterator<_IteratorL>&)'
 1507 |     operator<(const move_iterator<_Iterator>& __x,
      |     ^~~~~~~~
/usr/include/c++/10/bits/stl_iterator.h:1507:5: note:   template argument deduction/substitution failed:
gondola.cpp:209:19: note:   mismatched types 'const std::move_iterator<_IteratorL>' and 'int'
  209 |   while(at < arr[i]){
      |                   ^
In file included from /usr/include/c++/10/string:55,
                 from /usr/include/c++/10/bits/locale_classes.h:40,
                 from /usr/include/c++/10/bits/ios_base.h:41,
                 from /usr/include/c++/10/ios:42,
                 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 gondola.cpp:3:
/usr/include/c++/10/bits/basic_string.h:6267:5: note: candidate: 'template<class _CharT, class _Traits, class _Alloc> bool std::operator<(const std::__cxx11::basic_string<_CharT, _Traits, _Alloc>&, const std::__cxx11::basic_string<_CharT, _Traits, _Alloc>&)'
 6267 |     operator<(const basic_string<_CharT, _Traits, _Alloc>& __lhs,
      |     ^~~~~~~~
/usr/include/c++/10/bits/basic_string.h:6267:5: note:   template argument deduction/substitution failed:
gondola.cpp:209:19: note:   mismatched types 'const std::__cxx11::basic_string<_CharT, _Traits, _Alloc>' and 'int'
  209 |   while(at < arr[i]){
      |                   ^
In file included from /usr/include/c++/10/string:55,
                 from /usr/include/c++/10/bits/locale_classes.h:40,
                 from /usr/include/c++/10/bits/ios_base.h:41,
                 from /usr/include/c++/10/ios:42,
                 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 gondola.cpp:3:
/usr/include/c++/10/bits/basic_string.h:6280:5: note: candidate: 'template<class _CharT, class _Traits, class _Alloc> bool std::operator<(const std::__cxx11::basic_string<_CharT, _Traits, _Alloc>&, const _CharT*)'
 6280 |     operator<(const basic_string<_CharT, _Traits, _Alloc>& __lhs,
      |     ^~~~~~~~
/usr/include/c++/10/bits/basic_string.h:6280:5: note:   template argument deduction/substitution failed:
gondola.cpp:209:19: note:   mismatched types 'const std::__cxx11::basic_string<_CharT, _Traits, _Alloc>' and 'int'
  209 |   while(at < arr[i]){
      |                   ^
In file included from /usr/include/c++/10/string:55,
                 from /usr/include/c++/10/bits/locale_classes.h:40,
                 from /usr/include/c++/10/bits/ios_base.h:41,
                 from /usr/include/c++/10/ios:42,
                 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 gondola.cpp:3:
/usr/include/c++/10/bits/basic_string.h:6292:5: note: candidate: 'template<class _CharT, class _Traits, class _Alloc> bool std::operator<(const _CharT*, const std::__cxx11::basic_string<_CharT, _Traits, _Alloc>&)'
 6292 |     operator<(const _CharT* __lhs,
      |     ^~~~~~~~
/usr/include/c++/10/bits/basic_string.h:6292:5: note:   template argument deduction/substitution failed:
gondola.cpp:209:19: note:   mismatched types 'const _CharT*' and 'int'
  209 |   while(at < arr[i]){
      |                   ^
In file included from /usr/include/c++/10/bits/ios_base.h:46,
                 from /usr/include/c++/10/ios:42,
                 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 gondola.cpp:3:
/usr/include/c++/10/system_error:252:3: note: candidate: 'bool std::operator<(const std::error_code&, const std::error_code&)'
  252 |   operator<(const error_code& __lhs, const error_code& __rhs) noexcept
      |   ^~~~~~~~
/usr/include/c++/10/system_error:252:31: note:   no known conversion for argument 1 from 'int' to 'const std::error_code&'
  252 |   operator<(const error_code& __lhs, const error_code& __rhs) noexcept
      |             ~~~~~~~~~~~~~~~~~~^~~~~
/usr/include/c++/10/system_error:379:3: note: candidate: 'bool std::operator<(const std::error_condition&, const std::error_condition&)'
  379 |   operator<(const error_condition& __lhs,
      |   ^~~~~~~~
/usr/include/c++/10/system_error:379:36: note:   no known conversion for argument 1 from 'int' to 'const std::error_condition&'
  379 |   operator<(const error_condition& __lhs,
      |             ~~~~~~~~~~~~~~~~~~~~~~~^~~~~
In file included from /usr/include/c++/10/deque:67,
                 from /usr/include/x86_64-linux-gnu/c++/10/bits/stdc++.h:68,
                 from gondola.cpp:3:
/usr/include/c++/10/bits/stl_deque.h:2279:5: note: candidate: 'template<class _Tp, class _Alloc> bool std::operator<(const std::deque<_Tp, _Alloc>&, const std::deque<_Tp, _Alloc>&)'
 2279 |     operator<(const deque<_Tp, _Alloc>& __x, const deque<_Tp, _Alloc>& __y)
      |     ^~~~~~~~
/usr/include/c++/10/bits/stl_deque.h:2279:5: note:   template argument deduction/substitution failed:
gondola.cpp:209:19: note:   mismatched types 'const std::deque<_Tp, _Alloc>' and 'int'
  209 |   while(at < arr[i]){
      |                   ^
In file included from /usr/include/c++/10/tuple:39,
                 from /usr/include/c++/10/functional:54,
                 from /usr/include/x86_64-linux-gnu/c++/10/bits/stdc++.h:71,
                 from gondola.cpp:3:
/usr/include/c++/10/array:284:5: note: candidate: 'template<class _Tp, long unsigne