Rot123456789 by nn

c;main(n){for(scanf("%d ",&n);c=getchar(),~c;)putchar(c>64&c%91>2?(c%32+n-1)%26-~(c&96):693%c?c:c^30);}

Note that non-ascii characters in the above source code will be escaped (such as \x9f).

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