#include
#include
#include
void reverse( );
int main( )
{ char str[100];
int start, end;
gets(str);
scanf("%d %d", &start, &end);
reverse( str, start, end );
printf("%s\n", str);
return 0;
}
void reverse(char str[],int start,int end){
int k,len;
for(len=0;len<=100;len++){
if(str[len]=='\0'){
len--;break;
}
}
if((end-start)>(len-start))end=len;
if((end - start==0)||(end - start==1)){
k=str[end] ;str[end] = str[start] ;str[start] =k;
}
else{
k=str[end] ;str[end] = str[start] ;str[start] =k;
reverse (str,start++,end--);
//调试运行到这一步时进不了递归函数,提示错误为program received signal sigsegv,segmentation fault
}
}