少儿编程网

#include<iostream>
#include<string>
using namespace std;
char a(char e, char f){
	string a[]={" abcdefghijklmnopqrstuvwxyz",
				"aabcdefghijklmnopqrstuvwxyz",
				"bbcdefghijklmnopqrstuvwxyza",
				"ccdefghijklmnopqrstuvwxyzab",
				"ddefghijklmnopqrstuvwxyzabc",
				"eefghijklmnopqrstuvwxyzabcd",
				"gghijklmnopqrstuvwxyzabcdef",
				"hhijklmnopqrstuvwxyzabcdefg",
				"iijklmnopqrstuvwxyzabcdefgh",
				"kklmnopqrstuvwxyzabcdefghij",
				"llmnopqrstuvwxyzabcdefghijk",
				"mmnopqrstuvwxyzabcdefghijkl",
				"nnopqrstuvwxyzabcdefghijklm",
				"oopqrstuvwxyzabcdefghijklmn",
				"ppqrstuvwxyzabcdefghijklmno",
				"qqrstuvwxyzabcdefghijklmnop",
				"rrstuvwxyzabcdefghijklmnopq",
				"sstuvwxyzabcdefghijklmnopqr",
				"ttuvwxyzabcdefghijklmnopqrs",
				"uuvwxyzabcdefghijklmnopqrst",
				"vvwxyzabcdefghijklmnopqrstu",
				"wwxyzabcdefghijklmnopqrstuv",
				"xxyzabcdefghijklmnopqrstuvw",
				"yyzabcdefghijklmnopqrstuvwx",
				"zzabcdefghijklmnopqrstuvwxy"};
	string b="abcdefghijklmnopqrstuvwxyz";
	int c,d;
	c=b.find(e);
	d=b.find(f);
	string g=a[c+1];
	char h=g[d+2]; 
	return h;
}
int main(){
	char e,f;
	cin>>e>>f;
	cout<<a(e,f);			 								
	return 0;
}

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