Код
#include <iostream>#include <vector>int main() { int n; std::vector<int> sequence; std::cin >> n; for(auto i = 0; i < n; ++i) { int number; std::cin >> number; sequence.push_back(number); } int as = 0, bs = 0, cs = 0; for (auto &el : sequence) { switch (el) { case 1: ++as; break; case 2: ++bs; break; case 3: ++cs; break; default: throw std::runtime_error("All elements shall be into [1;3] range."); } } int an_answer = std::min({bs + cs, as + cs, bs + cs}); std::cout << an_answer << std::endl; return 0;}
===== PascalABC.NET =====
begin
var (a, b) := ReadReal2('Введите коэффициенты a и b:');
Write('Корень уравнения равен ', -b / a:0:3)
end.