Submission #140851

#	Time	Username	Problem	Language	Result	Execution time	Memory
140851		shafinalam	Difference (POI11_roz)	C++14	Compilation error	0 ms	0 KiB

roz

#include <bits/stdc++.h>

using namespace std;
#define ff first
#define ss second
const int mxn = 1e6+5;
typedef pair<int,int>pii;
#define  input freopen("in.txt","r",stdin)
#define  output freopen("out.txt","w",stdout)
#define  all(v) v.begin(), v.end()
vector<pii>arr[30];
pii tmp[mxn];

int main()
{
	//input;
	//output;

	int n;
	scanf("%d", &n);
	char ch;
	
	for(int i = 0; i < n; i++)
	{
		scanf(" %c", &ch);
		arr[ch-'a'].push_back(make_pair(i, ch-'a'));
	}
	int ans = -1;
	for(int i = 0; i < 26; i++)
	{
		for(int r = 0; r < 26; r++)
		{
			if(i==r) continue;
			merge(all(arr[i]), all(arr[r]), back_inserter(tmp));
			int k = arr[i].size()+arr[r].size();
			int sum = 0, best = -(1<<30);
			for(int j = 0; j < k; j++)
			{
				if(tmp[j].ss==i)
				{
					sum++;
					best++;
				}
				else
				{
					best = sum-1;
					sum = max(sum-1, 0);
				}
				ans = max(ans, best);
			}
		}
	}
	printf("%d\n", ans);
	return 0;
}

Compilation message (stderr)

In file included from /usr/include/c++/7/bits/stl_algobase.h:67:0,
                 from /usr/include/c++/7/bits/char_traits.h:39,
                 from /usr/include/c++/7/ios:40,
                 from /usr/include/c++/7/istream:38,
                 from /usr/include/c++/7/sstream:38,
                 from /usr/include/c++/7/complex:45,
                 from /usr/include/c++/7/ccomplex:39,
                 from /usr/include/x86_64-linux-gnu/c++/7/bits/stdc++.h:52,
                 from roz.cpp:1:
/usr/include/c++/7/bits/stl_iterator.h: In instantiation of 'class std::back_insert_iterator<std::pair<int, int> [1000005]>':
roz.cpp:34:53:   required from here
/usr/include/c++/7/bits/stl_iterator.h:487:7: error: 'std::pair<int, int> [1000005]' is not a class, struct, or union type
       operator=(const typename _Container::value_type& __value)
       ^~~~~~~~
/usr/include/c++/7/bits/stl_iterator.h:494:7: error: 'std::pair<int, int> [1000005]' is not a class, struct, or union type
       operator=(typename _Container::value_type&& __value)
       ^~~~~~~~
In file included from /usr/include/c++/7/algorithm:62:0,
                 from /usr/include/x86_64-linux-gnu/c++/7/bits/stdc++.h:65,
                 from roz.cpp:1:
/usr/include/c++/7/bits/stl_algo.h: In instantiation of '_OutputIterator std::__merge(_InputIterator1, _InputIterator1, _InputIterator2, _InputIterator2, _OutputIterator, _Compare) [with _InputIterator1 = __gnu_cxx::__normal_iterator<std::pair<int, int>*, std::vector<std::pair<int, int> > >; _InputIterator2 = __gnu_cxx::__normal_iterator<std::pair<int, int>*, std::vector<std::pair<int, int> > >; _OutputIterator = std::back_insert_iterator<std::pair<int, int> [1000005]>; _Compare = __gnu_cxx::__ops::_Iter_less_iter]':
/usr/include/c++/7/bits/stl_algo.h:4937:37:   required from '_OIter std::merge(_IIter1, _IIter1, _IIter2, _IIter2, _OIter) [with _IIter1 = __gnu_cxx::__normal_iterator<std::pair<int, int>*, std::vector<std::pair<int, int> > >; _IIter2 = __gnu_cxx::__normal_iterator<std::pair<int, int>*, std::vector<std::pair<int, int> > >; _OIter = std::back_insert_iterator<std::pair<int, int> [1000005]>]'
roz.cpp:34:54:   required from here
/usr/include/c++/7/bits/stl_algo.h:4882:18: error: no match for 'operator=' (operand types are 'std::back_insert_iterator<std::pair<int, int> [1000005]>' and 'std::pair<int, int>')
        *__result = *__first2;
        ~~~~~~~~~~^~~~~~~~~~~
In file included from /usr/include/c++/7/bits/stl_algobase.h:67:0,
                 from /usr/include/c++/7/bits/char_traits.h:39,
                 from /usr/include/c++/7/ios:40,
                 from /usr/include/c++/7/istream:38,
                 from /usr/include/c++/7/sstream:38,
                 from /usr/include/c++/7/complex:45,
                 from /usr/include/c++/7/ccomplex:39,
                 from /usr/include/x86_64-linux-gnu/c++/7/bits/stdc++.h:52,
                 from roz.cpp:1:
/usr/include/c++/7/bits/stl_iterator.h:452:11: note: candidate: constexpr std::back_insert_iterator<std::pair<int, int> [1000005]>& std::back_insert_iterator<std::pair<int, int> [1000005]>::operator=(const std::back_insert_iterator<std::pair<int, int> [1000005]>&)
     class back_insert_iterator
           ^~~~~~~~~~~~~~~~~~~~
/usr/include/c++/7/bits/stl_iterator.h:452:11: note:   no known conversion for argument 1 from 'std::pair<int, int>' to 'const std::back_insert_iterator<std::pair<int, int> [1000005]>&'
/usr/include/c++/7/bits/stl_iterator.h:452:11: note: candidate: constexpr std::back_insert_iterator<std::pair<int, int> [1000005]>& std::back_insert_iterator<std::pair<int, int> [1000005]>::operator=(std::back_insert_iterator<std::pair<int, int> [1000005]>&&)
/usr/include/c++/7/bits/stl_iterator.h:452:11: note:   no known conversion for argument 1 from 'std::pair<int, int>' to 'std::back_insert_iterator<std::pair<int, int> [1000005]>&&'
In file included from /usr/include/c++/7/algorithm:62:0,
                 from /usr/include/x86_64-linux-gnu/c++/7/bits/stdc++.h:65,
                 from roz.cpp:1:
/usr/include/c++/7/bits/stl_algo.h:4887:18: error: no match for 'operator=' (operand types are 'std::back_insert_iterator<std::pair<int, int> [1000005]>' and 'std::pair<int, int>')
        *__result = *__first1;
        ~~~~~~~~~~^~~~~~~~~~~
In file included from /usr/include/c++/7/bits/stl_algobase.h:67:0,
                 from /usr/include/c++/7/bits/char_traits.h:39,
                 from /usr/include/c++/7/ios:40,
                 from /usr/include/c++/7/istream:38,
                 from /usr/include/c++/7/sstream:38,
                 from /usr/include/c++/7/complex:45,
                 from /usr/include/c++/7/ccomplex:39,
                 from /usr/include/x86_64-linux-gnu/c++/7/bits/stdc++.h:52,
                 from roz.cpp:1:
/usr/include/c++/7/bits/stl_iterator.h:452:11: note: candidate: constexpr std::back_insert_iterator<std::pair<int, int> [1000005]>& std::back_insert_iterator<std::pair<int, int> [1000005]>::operator=(const std::back_insert_iterator<std::pair<int, int> [1000005]>&)
     class back_insert_iterator
           ^~~~~~~~~~~~~~~~~~~~
/usr/include/c++/7/bits/stl_iterator.h:452:11: note:   no known conversion for argument 1 from 'std::pair<int, int>' to 'const std::back_insert_iterator<std::pair<int, int> [1000005]>&'
/usr/include/c++/7/bits/stl_iterator.h:452:11: note: candidate: constexpr std::back_insert_iterator<std::pair<int, int> [1000005]>& std::back_insert_iterator<std::pair<int, int> [1000005]>::operator=(std::back_insert_iterator<std::pair<int, int> [1000005]>&&)
/usr/include/c++/7/bits/stl_iterator.h:452:11: note:   no known conversion for argument 1 from 'std::pair<int, int>' to 'std::back_insert_iterator<std::pair<int, int> [1000005]>&&'
roz.cpp: In function 'int main()':
roz.cpp:20:7: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
  scanf("%d", &n);
  ~~~~~^~~~~~~~~~
roz.cpp:25:8: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   scanf(" %c", &ch);
   ~~~~~^~~~~~~~~~~~