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class Solution {
   public:    string intToRoman(int num) {
           string Roman[13] = {
   "M","CM","D","CD","C","XC","L","XL","X","IX","V","IV","I"};        int data[13] = {
   1000,900,500,400,100,90,50,40,10,9,5,4,1};        string out;        int start = 0;        while(num>0){
               if(num-data[start]>=0){
                   out+=Roman[start];                num-=data[start];            }else                start++;        }        return out;    }};

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