// version 1
void strmcpy(char *t, int m, char *s) {
    t = t + m - 1;
    while (*t != '\0')
        *s++ = *t++;
    *s = '\0';
}

// version 1
void strmcpy(char *t, int m, char *s) {
  if(m<=MAXN){
    t = t + m - 1;
    while (*t != '\0')
        *s++ = *t++;
  }
    *s = '\0';
}

// ...
void strmcpy(char*t,int m,char*s){for(int i=0;;i++,t++)if(!*t){*s=0;break;}else if(i>m-2)*s++=*t;}