Hello. I have WA on the test #1. but answer of my prog with input 4 72 30 50 is 120.00. Here is my code on VS 2010 C++:
#include <iostream>
#include <vector>
#include <math.h>
#include <algorithm>
#include <iomanip>
using namespace std;

double slip(double w1, int w2){
    double res = 2*(pow(w1*w2, 1.0/2));
    return res;
}
int main(int argc, char *argv[])
{
    int n;
    int i;
    int weight;
    double ans;
    vector <int> weights;
    cin >> n;
    for (i=0; i<n; i++){
        cin >> weight;
        weights.push_back(weight);
    }
    sort(weights.begin(), weights.end());
    ans = weights[n-1];

    for(i=n-2; i>0; i--){
            ans=slip(ans, weights[i]);
    }
    cout.precision(2);
        cout<<fixed<<ans<<endl;
    //printf("%.2f\n", ans);
    return 0;
}

...
As you see i also tried printf but actualy it doesn't work!

Edited by author 21.01.2014 02:42