蒟蒻求助，80分，代码如下：

#include<bits/stdc++.h>
using namespace std;
int main(){
   int p1,p2,p3;
   cin>>p1>>p2>>p3;
   string a;
   cin>>a;
   for(int i=0;i<a.length();i++){
   	if(a[i+1]!='-'){
   		cout<<a[i];
   	}else if(a[i+1]=='-'&&a[i]>='a'&&a[i]<='z'&&a[i+2]>='a'&&a[i+2]<='z'&&a[i]<a[i+2]){
   		if(p1==1){
   			if(p3==1){
   				cout<<a[i];
   				for(int j=(int)(a[i])+1;j<(int)(a[i+2]);j++){
   					for(int k=0;k<p2;k++){
   						cout<<(char)(j);
   					}
   				} 
   				cout<<a[i+2];
   				i+=2;
   			}else{
   				cout<<a[i];
   				for(int j=(int)(a[i+2])-1;j>(int)(a[i]);j--){
   					for(int k=0;k<p2;k++){
   						cout<<(char)(j);
   					}
   				} 
   				cout<<a[i+2];
   				i+=2;
   			}
   		}else if(p1==2){
   			if(p3==1){
   				cout<<a[i];
   				for(int j=(int)(a[i])+1;j<(int)(a[i+2]);j++){
   					for(int k=0;k<p2;k++){
   						cout<<(char)(j-32);
   					}
   				} 
   				cout<<a[i+2];
   				i+=2;	
   			}else{
   				cout<<a[i];
   				for(int j=(int)(a[i+2])-1;j>(int)(a[i]);j--){
   					for(int k=0;k<p2;k++){
   						cout<<(char)(j-32);
   					}
   				} 
   				cout<<a[i+2];
   				i+=2;
   			}
   		}else if(p1==3){
   			cout<<a[i];
   			for(int j=(int)(a[i])+1;j<(int)(a[i+2]);j++){
   				for(int k=0;k<p2;k++){
   					cout<<"*";
   				}
   			} 
   			cout<<a[i+2];
   			i+=2;
   		}
   	}else if(a[i+1]=='-'&&a[i]>='0'&&a[i]<='9'&&a[i+2]>='0'&&a[i+2]<='9'&&a[i]<a[i+2]){
   		if(p1!=3&&p3==1){
   			cout<<a[i];
   			for(int j=(int)(a[i])+1;j<(int)(a[i+2]);j++){
   				for(int k=0;k<p2;k++){
   					cout<<(char)(j);
   				}
   			}
   			cout<<a[i+2];
   			i+=2;
   		}else if(p1!=3&&p3==2){
   			cout<<a[i];
   			for(int j=(int)(a[i+2])-1;j>(int)(a[i]);j--){
   				for(int k=0;k<p2;k++){
   					cout<<(char)(j);
   				}
   			} 
   			cout<<a[i+2];
   			i+=2;
   		}else if(p1==3){
   			cout<<a[i];
   			for(int j=(int)(a[i])+1;j<(int)(a[i+2]);j++){
   				for(int k=0;k<p2;k++){
   					cout<<"*";
   				}
   			} 
   			cout<<a[i+2];
   			i+=2;
   		}
   	}else{
   		cout<<a[i];
   	}
   }
   return 0;
}