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#include<bits/stdc++.h>
using namespace std;

//*****************Data type**********************//
typedef long long ll;
typedef long long int lli;
typedef unsigned long long  ull;
typedef unsigned long long int ulli;

//*****************Map****************************//
typedef map<int, int> MII;
typedef map<int, string> MIS;
typedef map<int, char> MIC;
typedef map<string, int> MSI;
typedef map<char, int> MCI;

//****************Pair****************************//
typedef pair<int, int> PII;
typedef pair<string, string> PSS;
typedef pair<char, char> PCC;
typedef pair<int, string> PIS;
typedef pair<int, char> PIC;

//*****************Vector************************//
typedef vector<int> VI;
typedef vector<string> VS;
typedef vector<double> VD;
typedef vector<lli> VLLI;
typedef vector<VI> VVI;
typedef vector<PII> VPI;

//-------------------------------------------------------------------------------//
#define pp1(A)              printf("%d\n",A)
#define pp2(A,B)            printf("%d %d\n",A,B)
#define pp3(A,B,C)          printf("%d %d %d\n",A,B,C)

#define ss1(A)              scanf("%d", &A)
#define ss2(A,B)            scanf("%d,%d",&A,&B)
#define ss3(A,B,C)          scanf("%d,%d,%d",&A,&B,&C)

//--------------------------------------------------------------------------------//
#define nosync              ios_base::sync_with_stdio(false), cin.tie(NULL)
#define pf                  push_front
#define pb                  push_back
#define pop                 pop_back()
#define mk                  make_pair
#define PF                  first
#define PS                  second
#define sq(a)               (a)*(a)
#define ALL(a)              a.begin(), a.end()
#define Erase(V,I)          V.erase(V.begin()+I)
#define Insert(V,I,M)       V.insert(V.begin()+I,M)

//********************************************************************************//
#define FOR(i,x,y)          for(int i=x;i<y;i++)
#define RFOR(i,x,y)         for(int i=x;i>=y;i--)
#define scanVI(V, N)        for(int i=0; i<N; i++){ int X; ss1(X); V.pb(X); }
#define scanAI(A, N)        for(int i=0; i<N; i++){ ss1(A[i]); }
#define printVI(V, N)       for(int i=0; i<N; i++){ cout<<V[i]<<endl; }
#define printVSI(V, N)      for(int i=0; i<N; i++){ cout<<V[i]<<" "; }
#define printAI(A, N)       for(int i=0; i<N; i++){ cout<<A[i]<<endl; }
#define printASI(A, N)      for(int i=0; i<N; i++){ cout<<A[i]<<" "; }

//---------------------------------*START*-----------------------------------------//
int sum(int x)
{
    if(x>=1)
    {
        int r=x%10;
        //cout<<r<<endl;
        int d=x/10;
        //cout<<"ok"<<endl;
        //int r=x%10;
        return r+sum(d);
    }

}

int main()
{
   int a;
   cin>>a;
   int temp=a;
   //cout<<temp%10<<endl;
   while(1)
  {
       int rs=sum(temp);
       if(rs%4==0)
       {
           cout<<temp<<endl;
           break;

       }
       temp++;
  }
  return 0;

}