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

char rot13(char c)
{
    if ((c >= 'a' && c <= 'm') || (c >= 'A' && c <= 'M'))
        return c + 13;
    else
        return c - 13;
}

int main(int argc, char *argv[])
{
    for (int i = 1; i < argc; i++) {
        for (int j = 0; j < strlen(argv[i]); j++) {
            printf("%c", rot13(argv[i][j]));
        }
        printf(" ");
    }
    printf("\n");

    return 0;
}