#include <bits/stdc++.h>

[[nodiscard]] static inline constexpr uint_fast32_t solve(uint_fast32_t L, uint_fast32_t M, uint_fast32_t N) noexcept
{
	M += N / 25, N %= 25;
	L += M / 4, M %= 4;
	L %= 10;

	return L + M + N;
}

int main()
{
	std::cin.tie(nullptr);
	std::ios::sync_with_stdio(false);
	
	uint_fast32_t L, M, N;
	std::cin >> L >> M >> N;

	std::cout << solve(L, M, N) << '\n';
	return 0;
}