wrong answer Too short on line 1

#include<iostream>
#include<cstdio>
#include<cstring>
#include<cmath>
#include<algorithm>
using namespace std;
	int p1,p2,p3;
	char s[103];
	int len;
bool aph(char ch){
	return 'a'<=ch&&ch<='z';
}
bool num(char ch){
	return '0'<=ch&&ch<='9';
}
bool valid(char ch){
	return aph(ch)||num(ch)||ch=='-';
}
bool err(char a,char b){
	if(aph(a))
		return num(b);
	if(num(b))
		return aph(a);
	return 1;
}
int main(){
	freopen("data.in","r",stdin);
	freopen("data.out","w",stdout);
	scanf("%d%d%d",&p1,&p2,&p3);	getchar();
	len=0;
	while(valid(s[len]=getchar()))
		len++;
	for(int i=0;i<len;i++)
		if(i==0||i==len-1||s[i]!='-')
			printf("%c",s[i]);
		else 
			if(s[i-1]>=s[i+1]
				||err(s[i-1],s[i+1]))
				printf("-");
			else 
			if(s[i+1]==s[i-1]+1)
				continue;
			else 
				if(p3==1){
					if(p1==1)
						for(char j=s[i-1]+1;j<s[i+1];j++)
							for(int k=1;k<=p2;k++)
								printf("%c",j);
					else 
					if(p1==2){
						if(aph(s[i-1]))
						for(char j=s[i-1]+1;j<s[i+1];j++)
							for(int k=1;k<=p2;k++)
								printf("%c",j-'a'+'A');
						else 
						for(char j=s[i-1]+1;j<s[i+1];j++)
							for(int k=1;k<=p2;k++)
								printf("%c",j);
					}
					else 
						for(char j=s[i-1]+1;j<s[i+1];j++)
							for(int k=1;k<=p2;k++)
								printf("*");
				}
				else {
					if(p1==1)
						for(char j=s[i+1]-1;j>s[i-1];j--)
							for(int k=1;k<=p2;k++)
								printf("%c",j);
					else 
					if(p1==2){
						if(aph(s[i-1]))
						for(char j=s[i+1]-1;j>s[i-1];j--)
							for(int k=1;k<=p2;k++)
								printf("%c",j-'a'+'A');
						else 
						for(char j=s[i+1]-1;j>s[i-1];j--)
							for(int k=1;k<=p2;k++)
								printf("%c",j);
					}
					else 
						for(char j=s[i+1]-1;j>s[i-1];j--)
							for(int k=1;k<=p2;k++)
								printf("*");
				}
	printf("\n");	
	return 0;
}