1.代码如下：
#include <iostream>
#include <string>
using namespace std;
int n;
string deal(string s,int &e){
int k = 0;//s的下标
while(s.length()>0&&s[0] == '0'){
s.erase(s.begin());//去掉前导0
}
if(s[0] == '.'){
s.erase(s.begin());
while(s.length()>0&&s[0] == '0'){
s.erase(s.begin());
e--;//指数减一
}
}
else{
while(k< s.length() && s[k] !='.'){
k++;
e++;
}
if(k<s.length()){
s.erase(s.begin() + k);
}
}
if(s.length() == 0){
e = 0;
}
int num = 0;
k = 0;
string res;
while(num < n){
if(k<s.length()) res +=s[k++];
else res += '0';
num ++;
}
return res;//返回可以直接输出的字符串
}
int main(){
string s1,s2,s3,s4;
cin >> n>> s1>>s2;
int e1 = 0 ,e2 = 0;
s3 = deal(s1,e1);
s4 = deal(s2,e2);
if(s3 == s4 && e1 == e2){
cout<< "YES 0."<<s3<<"*10^"<<e1<<endl;
}
else{
cout<< "NO 0."<<s3<<"*10^"<<e1<<" 0."<<s4<<"*10^"<<e2<<endl;
}
return 0;
}
/**
3 0012.123 12.234
2 1.111 1.112
4 1.111 1.112
3 12300 12358.9
3 120 128
1 0.11 0.12
2 0.11 0.12
2 1.12 1.21
4 0 0000.00
4 000.00 00
**/1)上面的测试用例全部过即可
