#include <iostream #include <vector #include <algorithm // 包含stable_sort

using namespace std;

int main() { int n; cin >> n; vector<int a(n);

for (int i = 0; i < n; ++i) {
    cin >> a[i];
}

stable_sort(a.begin(), a.end(), [](int x, int y) {
    return abs(x) < abs(y);
});

for (int i = 0; i < n; ++i) {
    if (i > 0) cout << " "; // 避免行首空格
    cout << a[i];
}
cout << endl;

return 0;

}

不知为何>无法显示并会使整个<>无效，故删去>