Right-Left cipher is used for strings. To encrypt the string s=s1s2…sns=s1s2…sn Polycarp uses the following algorithm: he writes down s1s1, he appends the current word with s2s2 (i.e. writes down s2s2 to the right of the current result), he prepends the current word with s3s3...
Right-Left cipher is used for strings. To encrypt the string s=s1s2…sns=s1s2…sn Polycarp uses the following algorithm: he writes down s1s1, he appends the current word with s2s2 (i.e. writes down s2s2 to the right of the current result), he prepends the current word with s3s3...
地址:http://codeforces.com/contest/234/problem/A 排座位,左右撇子都有,要求每两个人坐一起手不打架 1#include<stdio.h>23intn;45intmain()6{7intl,r;8charin[101];9freopen("input.txt","r",stdin);10freopen("output.txt","w",stdout);11scanf("%d",&n);12scanf("%s",in);13l=1;14r=...
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