#include <iostream>
using namespace std;
int Count(int nrROW, int nrCOL, int nrOfMoves, char *a){
    int count = 0;
      if(nrOfMoves == 0)
        return 0;
      for(int i=0; i < nrOfMoves; ++i){
          if(a[i] == 'L'){
             count++;
             nrCOL--;
          }
          if(a[i] == 'R' && a[i - 1] == 'L'){
              nrCOL++;
          }
          if(a[i] == 'L' && a[i - 1] == 'R'){
              nrCOL++;
          }
          if(a[i] == 'R'){
            count++;
            nrCOL--;
          }
          if(a[i] == 'U'){
              count++;
              nrROW--;
          }
          if(a[i] == 'D' && a[i - 1] == 'U'){
              nrROW++;
          }
          if(a[i] == 'U' && a[i - 1] == 'D'){
              nrROW++;
          }
          if(a[i] == 'D'){
              count++;
              nrROW--;
          }
      }
    if(nrROW >=1 && nrCOL >= 1)
      return count;
    else
      return 0;

}
int main(){
    int nrROW, nrCOL, k;
    cin>>nrROW>>nrCOL;
    cin>>k;
    char moves[k];
      for(int i=0; i < k; ++i)
        cin>>moves[i];
    cout<<Count(nrROW, nrCOL, k, moves);
    return 0;
}