URAL 1001 Reverse Root（水题？）

 1 #include <cstdio>
 2 #include <algorithm>
 3 #include <cstring>
 4 #include <iostream>
 5 #include <vector>
 6 #include <cmath>
 7 using namespace std;
 8 
 9 double a;
10 vector<double> ans;
11 
12 int main() {
13     while(scanf("%lf", &a) != EOF) ans.push_back(sqrt(a));
14     for(vector<double>::reverse_iterator it = ans.rbegin(); it != ans.rend(); ++it)
15         printf("%.4f\n", *it);
16 }