#include using namespace std;

int main() {

char str[30] = { 0 };
cin.getline(str, sizeof(str));

int m;
cin >> m;
char *ptr;
ptr = &str[m-1];
// write your code here......
int i = m-1;
while ( *ptr !='\0'){
    cout<<*ptr;
    ptr++;
}
return 0;

}