OJ-Problems-Source/HDOJ/1141_autoAC.cpp

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2016-08-13 10:51:15 +08:00
#include<iostream>
#include<cmath>
using namespace std;
int x[21];
void make()
{
int i,j;
double k=log(4.0);
for(i=196;i<=216;++i)
{
k*=2;
double f=0;
for(j=1;f<k;++j)
f+=log((double)j);
x[i-196]=j-2;
}
}
int main()
{
make();
int year;
while(cin>>year&&year)
cout<<x[(year-1960)/10]<<endl;
return 0;
}#include<iostream>
#include<cmath>
using namespace std;
int x[21];
void make()
{
int i,j;
double k=log(4.0);
for(i=196;i<=216;++i)
{
k*=2;
double f=0;
for(j=1;f<k;++j)
f+=log((double)j);
x[i-196]=j-2;
}
}
int main()
{
make();
int year;
while(cin>>year&&year)
cout<<x[(year-1960)/10]<<endl;
return 0;
}