#include<stdio.h>
int main()
{
int n=0; //n=0
int a=3; //a(0)=3
do
{
a=2*a-1;
n=n+1; //次のループの準備
}
while(a>10000);
return 0;
}
I2luY2x1ZGU8c3RkaW8uaD4KaW50IG1haW4oKQp7CmludCBuPTA7IC8vbj0wCmludCBhPTM7IC8vYSgwKT0zCmRvCnsKYT0yKmEtMTsKbj1uKzE7IC8v5qyh44Gu44Or44O844OX44Gu5rqW5YKZCn0Kd2hpbGUoYT4xMDAwMCk7CnByaW50ZigiYSgxMDAwMCk9JWQiLGEpOwpyZXR1cm4gMDsKfQoK