```c
#include<bits/stdc++.h>
using namespace std;
int select(char a,int b,int c){
int sum;
switch(a){
case 'a': cout<<b<<"+"<<c<<"="<<b+c<<endl;sum=b+c;break;
case 'b': cout<<b<<"-"<<c<<"="<<b-c<<endl;sum=b-c;break;
case 'c': cout<<b<<"*"<<c<<"="<<b*c<<endl;sum=b*c;break;
}
return sum;
}
int length(int a){
int sum=0;
if(a==0) return 1;
while(a!=0){
a=a/10;
sum++;
}
return sum;
}
int main(){
string a;
char ch;
int n,b,c,sum,l,s;
cin>>n;
for(int i=1;i<=n;i++){
b=0;
cin>>a;
if(a[0]=='a'||a[0]=='b'||a[0]=='c'){
ch=a[0];
cin>>b>>c;
sum=select(ch,b,c);
s=length(b)+length(c)+length(sum)+2;
if(sum<0) s++;
cout<<s<<endl;
}
else{
l=a.length();
for(int i=0;i<l;i++) b=b*10+a[i]-'0';
cin>>c;
sum=select(ch,b,c);
s=length(b)+length(c)+length(sum)+2;
if(sum<0) s++;
cout<<s<<endl;
}
}
return 0;
}
```
by wssb1919810 @ 2022-11-19 12:14:36