func_code_string: #include<bits/stdc++.h>   #define int long long   using namespace std;   inline int read()   {       char c = getchar();       int x = 0, f = 1;       while (c <  0  || c >  9 )       {           if (c ==  - )               f = -1;           c = getchar();       }       while (c >=  0  && c <=  9 )       {           x = (x << 1) + (x << 3) + (c ^ 48);           c = getchar();       }       return x * f;   }   template <class cl>   void put(cl x)   {       if (x < 0)           putchar( - ), x = -x;       if (x > 9)           put(x / 10);       putchar(x % 10 +  0 );       return;   }   int n;   int a[55];   signed main()   {       int t;       t=read();       int n;       while(t--)       {           n=read();           int zheng=0,fu=0;           for(int i=1;i<=n;i++)           {               a[i]=read();               if(a[i]>=0) zheng++;               else fu++;           }           if( fu !=0)           {               puts( no );continue;           }           else            {               puts( yes );               sort(a+1,a+1+n);               if(a[n]>=0)               {                   cout<<a[n]+1<<  n ;                   for(int i=0;i<=a[n];i++)                   {                       cout<<i<<   ;                   }                   cout<<  n ;               }           }       }       return 0;   }