#include <iostream>#include <cstring>#include <cstdio>using namespace std;const int maxn = 10000 + 10;int n,m,k;char a[maxn];int main() { while (scanf("%d%d%d",&n,&k,&m) != EOF) { scanf("%s",a+1); m += n; int sum = 0; int x = 1; while (m > n) { if (x == 1) sum++; int s = min(m-n,(m-x)/(k+1)+1); x += s*(k+1); if (x > m) x -= m; else x -= s; m -= s; x %= m; if (!x) x = m; } sum %= 26; a[x] = (a[x] - 'A' + sum) % 26 + 'A'; cout<<a[x]<<endl; }}
