uva 10916 - Factstone Benchmark

#include<iostream>#include<cstdio>#include<cmath>using namespace std;int main(){    int n,i;    double m,sum;    while (cin>>n&&n)    {        m=pow(2,(n-1940)/10)*log(2);        sum=0;        for (i=1; sum<m; i++)            sum+=log(i);        cout<<i-2<<endl;    }    return 0;}