#include <cstdio>
#include <stdlib.h>
int main()
{
    int n, m;
    scanf("%d%d", &m, &n);
    for(int i = 1, c = 1 ; i <= n ; i++ )
    {
        char cmd[100];
        sprintf(cmd, "ren s%d.%da.in .%d.in", m, i, c);
        system(cmd);
        sprintf(cmd, "ren s%d.%da.out .%d.out", m, i, c++);
        system(cmd);
        sprintf(cmd, "ren s%d.%db.in .%d.in", m, i, c);
        system(cmd);
        sprintf(cmd, "ren s%d.%db.out .%d.out", m, i, c++);
        system(cmd);

    }
}