C++

感觉写的好复杂啊aaa

#include <iostream>
#include <string>
#include <math.h>
#include <vector>
using namespace std;
vector<int> fun(int m, int n){
    vector<int> res;
    for(int num = m; num < n; num++){
        string numS = to_string(num);
        string::iterator sit;
        int sum = 0;
        for(sit = numS.begin(); sit != numS.end(); sit++){
            sum += pow((*sit) - '0', 3);
        }
        if(sum == num){
            res.push_back(num);
        }
    }
    return res;
}
int main(){
	int m, n;
	int flag = false;
    vector<int> a;
    vector<int>::iterator it;
	while(cin >> m >> n){
		if(m == 0 && n == 0){
			break;
		}
        a = fun(m, n);
        if(a.size() == 0){
            cout << "no";
        }
        else{
            for(it = a.begin(); it != a.end(); it++){
                cout << *it << " ";
            }
        }
		cout...