Submission #7969208

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Source Code Expand

#include <bits/stdc++.h>
using namespace std;

int main()
{
	int N, K;
	cin >> N >> K;
	map<long long, long long> mp;
	int acnt = 0;
	for( int i = 0; i < N; i++ ) {
		int A;
		cin >> A;
		int a = __gcd( A, K );
		mp[a]++;
	}

	long long ans = 0;
	for( auto it1 = mp.begin(); it1 != mp.end(); it1++ ) {
		for( auto it2 = mp.begin(); it2 != mp.end(); it2++ ) {
			if( it1 > it2 || it1->first * it2->first % K ) continue;
			if( it1->first == it2->first )
				ans += it1->second * ( it1->second - 1 ) / 2;
			else
				ans += it1->second * it2->second;
		}
	}

	cout << ans << endl;
}

Submission Info

Compile Error

./Main.cpp: In function ‘int main()’:
./Main.cpp:20:12: error: no match for ‘operator>’ (operand types are ‘std::_Rb_tree_iterator<std::pair<const long long int, long long int> >’ and ‘std::_Rb_tree_iterator<std::pair<const long long int, long long int> >’)
    if( it1 > it2 || it1->first * it2->first % K ) continue;
            ^
In file included from /usr/include/c++/5/bits/stl_algobase.h:64:0,
                 from /usr/include/c++/5/bits/char_traits.h:39,
                 from /usr/include/c++/5/ios:40,
                 from /usr/include/c++/5/istream:38,
                 from /usr/include/c++/5/sstream:38,
                 from /usr/include/c++/5/complex:45,
                 from /usr/include/c++/5/ccomplex:38,
                 from /usr/include/x86_64-linux-gnu/c++/5/bits/stdc++.h:52,
                 from ./Main.cpp:1:
/usr/include/c++/5/bits/stl_pair.h:233:5: note: candidate: template<class _T1, class _T2> constexpr bool std::operator>(const std::pair<_T1, _T2>&, const std::pair<_T1, _T2>&)
     oper...