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


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

    if(argc < 3) {
        return 0;
    }
    FILE *in = fopen(argv[1], "r");
    FILE *out = fopen(argv[2], "w");

    char zbor[1000];
    int brojac = 0;
    while(fscanf(in, "%s", zbor)) {
        if(zbor[strlen(zbor) - 1] == '.' || zbor[strlen(zbor - 1)] == ',') {
            int dali_e_palindrom = 1;
            int i = 0;
            int j = strlen(zbor) - 2;

            while(i < j) {
                if(zbor[i] == zbor[j]) {
                    i++;
                    j--;
                }
                else {
                    dali_e_palindrom = 0;
                    break;
                }
            }
            if(dali_e_palindrom) {
                for(int k = 0; k < strlen(zbor) - 1; k++) {
                    fprintf(out, "%c", zbor[k]);
                }
                fprintf(out, "\n");
                brojac++;
            }
        }
    }
    fprintf(out, "%d\n", brojac);


    return 0;

}