我的代码：#include#includeusing namespace std;int main(){string a

我的代码：#include#includeusing namespace std;int main(){string a,b;string c="abcdefghij";while(cin>>a>>b){if(a.length()=0;n1--,n2--){if(a[n1]-39>'9')a[n1]=a[n1]-39;if(b[n2]-39>'9')b[n2]=b[n2]-39;a[n1]=char(a[n1]+(n2>=0?b[n2]-'0':0));if(a[n1]-'0'>=20){a[n1]=char(int((a[n1]-'0')%20)+'0');if(n1)a[n1-1]++;else{a[n1]=c[int(a[n1]-'9')-1];a='1'+a;}}if(a[n1]>'9'){a[n1]=c[int(a[n1]-'9')-1];}}cout