第一题： #include<iostream> (5488)#include<vector> #include<algorithm> using namespace std; vector<int> tentotwo(int N) { vector<int> v_temp; while (N > 0) { v_temp.push_back(N % 2); N /= 2; } return v_temp; } int main() { int T; cin >> T; vector<int> v(T); for (int i = 0; i < T; i++) { cin >> v[i]; } for (int i = 0; i < T; i++) { if (v[i] == 1) { cout << "1" << endl; cout << "1" << endl; continue; } vector<int> temp; temp = tentotwo(v[i]); reverse(temp.begin(), temp.end()); //temp.reverse(); int M = temp.size(); cout << M << endl; cout << "1"; for (int j = 1; j < M; j++) { if (temp[j] == 1) { cout << " " << j+1; } } cout << endl; } return 0; }