Language: C++

#include <iostream>
#include <vector>
#include <array>
#include <list>
#include <queue>
#include <set>
#include <map>
#include <unordered_map>
#include <unordered_set>
#include <utility>
#include <string>
#include <sstream>
#include <algorithm>
#include <random>
#include <cstdio>
#include <cstdlib>
#include <cstring>
#include <ctime>
#include <cmath>
#include <cassert>
#include <climits>
#include <bitset>
#include <functional>
#include <iomanip>

#define FOR_LT(i, beg, end) for (int i = beg; i < end; i++)
#define FOR_LE(i, beg, end) for (int i = beg; i <= end; i++)
#define FOR_DW(i, beg, end) for (int i = beg; end <= i; i--)

using namespace std;

int main()
{
	ios_base::sync_with_stdio(false);
	cin.tie(NULL);
	cout << fixed << setprecision(20);

	int64_t t1, t2, a1, a2, b1, b2; cin >> t1 >> t2 >> a1 >> a2 >> b1 >> b2;

	if (t1 * a1 + t2 * a2 == t1 * b1 + t2 * b2) {
		cout << "infinity" << endl;
		return 0;
	}

	if (a1 < b1) {
		swap(a1, b1);
		swap(a2, b2);
	}

	int64_t l = t1 * a1 + t2 * a2 - t1 * b1 - t2 * b2;
	if (l > 0) {
		cout << 0 << endl;
		return 0;
	}
	int64_t s = t1 * a1 - t1 * b1;
	int64_t ans = -(s / l) * 2;
	if (s % l != 0) ans++;

	cout << max(ans, 0LL) << endl;


	return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:59:20: error: no matching function for call to 'max(int64_t&, long long int)'
   59 |         cout << max(ans, 0LL) << endl;
      |                 ~~~^~~~~~~~~~
In file included from /usr/include/c++/14/string:51,
                 from /usr/include/c++/14/bits/locale_classes.h:40,
                 from /usr/include/c++/14/bits/ios_base.h:41,
                 from /usr/include/c++/14/ios:44,
                 from /usr/include/c++/14/ostream:40,
                 from /usr/include/c++/14/iostream:41,
                 from a.cc:1:
/usr/include/c++/14/bits/stl_algobase.h:257:5: note: candidate: 'template<class _Tp> constexpr const _Tp& std::max(const _Tp&, const _Tp&)'
  257 |     max(const _Tp& __a, const _Tp& __b)
      |     ^~~
/usr/include/c++/14/bits/stl_algobase.h:257:5: note:   template argument deduction/substitution failed:
a.cc:59:20: note:   deduced conflicting types for parameter 'const _Tp' ('long int' and 'long long int')
   59 |         cout << max(ans, 0LL) << endl;
      |                 ~~~^~~~~~~~~~
/usr/include/c++/14/bits/stl_algobase.h:303:5: note: candidate: 'template<class _Tp, class _Compare> constexpr const _Tp& std::max(const _Tp&, const _Tp&, _Compare)'
  303 |     max(const _Tp& __a, const _Tp& __b, _Compare __comp)
      |     ^~~
/usr/include/c++/14/bits/stl_algobase.h:303:5: note:   candidate expects 3 arguments, 2 provided
In file included from /usr/include/c++/14/algorithm:61,
                 from a.cc:13:
/usr/include/c++/14/bits/stl_algo.h:5706:5: note: candidate: 'template<class _Tp> constexpr _Tp std::max(initializer_list<_Tp>)'
 5706 |     max(initializer_list<_Tp> __l)
      |     ^~~
/usr/include/c++/14/bits/stl_algo.h:5706:5: note:   candidate expects 1 argument, 2 provided
/usr/include/c++/14/bits/stl_algo.h:5716:5: note: candidate: 'template<class _Tp, class _Compare> constexpr _Tp std::max(initializer_list<_Tp>, _Compare)'
 5716 |     max(initializer_list<_Tp> __l, _Compare __comp)
      |     ^~~
/usr/include/c++/14/bits/stl_algo.h:5716:5: note:   template argument deduction/substitution failed:
a.cc:59:20: note:   mismatched types 'std::initializer_list<_Tp>' and 'long int'
   59 |         cout << max(ans, 0LL) << endl;
      |                 ~~~^~~~~~~~~~