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 33 34 35 36 37 38 39 #include #include #include using namespace std; int main() { int count; cin >> count; vector coins(count); for (auto& coin : coins) cin >> coin; sort(coins.begin(), coins.end()); long sum = 0; long last = 0; for (const auto& coin : coins) { if (coin != last) sum >>= coin - last; ++sum; last = coin; } for (; sum > 1; sum >>= 1) last++; cout << last; return 0; }