Very Simple Solution!!!
\n\n# Code\n\nclass Solution {\npublic:\n    bool isFascinating(int n) {\n        string s=to_string(n);\n        string s1=to_string(2*n);\n        string s2=t
\n\n# Code\n```\nclass Solution {\npublic:\n    bool isFascinating(int n) {\n        string s=to_string(n);\n        string s1=to_string(2*n);\n        string s2=to_string(3*n);\n        string s3=s+s1+s2;\n        vector<int>vis(10000,0);\n        for(int i=0;i<s3.size();i++){\n            vis[s3[i]-\'0\']++;\n        }\n        if(vis[0])return false;\n        for(int i=1;i<9999;i++){\n            if(vis[i]>1)return false;\n        }\n        return true;\n        \n    }\n};\n```
['C++']