#include<stdio.h>
#include<string.h>
#include<stdlib.h>
int main(int argc, char * argv[])
{
        if(argc<2){
                printf("usage: passgen [password]\n");
                exit(0);
        }
        char * buffer = malloc(255);
        strncpy(buffer, (const char *)argv[1], 255);
        int i = strlen(argv[1]);
        while(i){
                buffer[i]-=10;
                i--;
        }
        printf("%s", buffer); printf("\n");
}