#include<stdio.h>
int main(){
int i,j,n;
for(i=0;i<n;i++){
for(j=1;j<=n-i;j++){
}
int num=1;
for(j=0;j<=i;j++){
num=num*(i-j)/(j+1);
}
}
return 0;
}
I2luY2x1ZGU8c3RkaW8uaD4KaW50IG1haW4oKXsKaW50IGksaixuOwpzY2FuZigiJWQiLCZuKTsKZm9yKGk9MDtpPG47aSsrKXsKCWZvcihqPTE7ajw9bi1pO2orKyl7CgkJcHJpbnRmKCIgIik7Cgl9CglpbnQgbnVtPTE7Cglmb3Ioaj0wO2o8PWk7aisrKXsKCQlwcmludGYoIiVkICIsbnVtKTsKCQludW09bnVtKihpLWopLyhqKzEpOwoJfQoKCQoJCglwcmludGYoIlxuIik7Cn0KCQpyZXR1cm4gMDsJCn0=