View Compilation Error

0_0_36231583_22510.cpp:8:20: error: 'll' does not name a type
 int p,n,m,h[N],mid;ll f[N];
                    ^
0_0_36231583_22510.cpp: In function 'void dfs(int, int)':
0_0_36231583_22510.cpp:21:13: error: 'f' was not declared in this scope
   if(s>mid) f[u]+=f[v];
             ^
0_0_36231583_22510.cpp:22:8: error: 'f' was not declared in this scope
   else f[u]+=min(s,f[v]);
        ^
0_0_36231583_22510.cpp:24:10: error: 'f' was not declared in this scope
  if(!ok) f[u]=10000000;
          ^
0_0_36231583_22510.cpp: In function 'int main()':
0_0_36231583_22510.cpp:38:7: error: 'f' was not declared in this scope
    if(f[1]>m) l=-~mid;
       ^