#include <iostream> const int N = 500005; bool usedCompany[N]; int main() { int n, k; std::cin >> n >> k; int bottlesUsed = 0; int movesRequired = 0; for (int i = 0; i < n && bottlesUsed < k; i++) { int p; std::cin >> p; if (!usedCompany[p]) { usedCompany[p] = true; movesRequired += i - bottlesUsed; bottlesUsed++; } } if (bottlesUsed == k) { std::cout << movesRequired; } else { std::cout << -1; } return 0; }
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 | #include <iostream> const int N = 500005; bool usedCompany[N]; int main() { int n, k; std::cin >> n >> k; int bottlesUsed = 0; int movesRequired = 0; for (int i = 0; i < n && bottlesUsed < k; i++) { int p; std::cin >> p; if (!usedCompany[p]) { usedCompany[p] = true; movesRequired += i - bottlesUsed; bottlesUsed++; } } if (bottlesUsed == k) { std::cout << movesRequired; } else { std::cout << -1; } return 0; } |