#include <stdio.h>

int main() {
    int text;
    int lines_count = 0;

    while ((text = getchar()) != EOF) {
        if (text == '\n') {
            putchar('\n');
            lines_count++;
        } else if (text == '\t') {
            putchar('\t');
            continue;
        } else if ((text >= 'a' && text <= 'z') || (text >= 'A' && text <= 'Z')) {
            putchar(text ^ ' ');
        } else if ((text >= 32 && text < 127) || text == 9) {
            putchar(text);
        } else {
            continue;
        }
    }

    printf("\nLines count: %d\n", lines_count);

    return 0;
}