#include <cassert>
#include <vector>

int main() {
    std::vector<int> scores{8, 2, 9, 4, 7, 6};
    const int minimum = 6;
    const auto removed = std::erase_if(scores, [minimum](int score) {
        return score < minimum;
    });
    assert(removed == 2);
    assert((scores == std::vector<int>{8, 9, 7, 6}));
    if (scores.size() >= 3) {
        scores.erase(scores.begin() + 2);
    }
    assert((scores == std::vector<int>{8, 9, 6}));
}