AOJ Volume0-0034

http://judge.u-aizu.ac.jp/onlinejudge/description.jsp?id=0034

#define _USE_MATH_DEFINES
#include <iostream>
#include <vector>
#include <list>
#include <cmath>
#include <algorithm>

using namespace std;

int main ()
{
    int input[10],v1,v2;
    
    while (scanf("%d,%d,%d,%d,%d,%d,%d,%d,%d,%d,%d,%d",&input[0],&input[1],&input[2],&input[3],&input[4],&input[5],&input[6],&input[7],&input[8],&input[9],&v1,&v2) != -1) {
        
        double v1_d = (double)v1;
        double v2_d = (double)v2;
        
        double array[11] = {0};
        array[0] = 0;
        for (int i=1; i < 11; i++) {
            array[i] = array[i-1] + input[i-1];
        }
        
        //計算
        double MAX = array[10] * 60;
        double b = MAX / v2;
        
        double x = (b * ((v1_d * v2_d) / (v1_d + v2_d))) / 60;
        
        for (int i=0; i < 11; i++) {
            if (x <= array[i]) {
                cout << i << endl;
                break;
            }else if(x < array[i]) {
                cout << i-1 << endl;
                break;
            }
        }
        
        
    }
    
    return 0;
}
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