백준 2231 C++

#include <iostream>
using namespace std;

int main(){
    int n,sum,value;
    cin >> n;
    for(int i=1; i<n; i++){
        sum = i;
        value = i;
        while(value){
            sum += value%10;
            value /= 10;
        }
        if(n == sum){
            cout << i;
            return 0;
        }
    }
    cout << "0";
    return 0;
}