PAT a1060题解

#include <iostream>#include <string>using namespace std;int n;string deal(string s, int& e){int k = 0;while(s.length() > 0 && s[0] == '0'){s.erase(s.begin());}if(s[0] == '.'){s.erase(s.begin());while(s.length() > 0 && s[0] == '0'){s.erase(s.begin());e--;}}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;} 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;}