#include <stdio.h>
#include <stdlib.h>

void visit ( int **visited , int x , int y , int * count) {
    if ( visited[x][y] == 1 ) {
        (*count) ++;
    }
    else if ( visited[x][y] == 0 ) {
        visited[x][y] = 1;
    }
}

int main ( int argc , char * argv[] ) {

    int ** visited;
    char str[1001];
    int i,j;

    scanf("%s" , str);

    while ( str[0] != 'Q' ) {

        visited = (int **)calloc ( 2002 , sizeof(int*) );
        for ( i = 0 ; i < 2002 ; i++ ) {
            visited[i] = (int *) calloc ( 2002 , sizeof(int) );
        }

        int count = 0;
        int x=1001,y=1001;

        visited[x][y] = 1;

        for ( i = 0 ; str[i] != 'Q' ; i++ ) {
            switch( str[i] ) {
                case 'U':
                    x -= 1;
                    visit( visited , x , y , &count);
                    break;
                case 'D':
                    x += 1;
                    visit( visited , x , y , &count);
                    break;
                case 'L':
                    y -= 1;
                    visit( visited , x , y , &count);
                    break;
                case 'R':
                    y += 1;
                    visit( visited , x , y , &count);
                    break;
            }
        }

        printf("%d\n" , count);
        for ( i = 0 ; i < 2002 ; i++ ) {
            free(visited[i]);
        }
        free(visited);

        scanf("%s" , str);
    }

    return 0;

}