#include<stdio.h>
int main(){
int n;
while(scanf("%d",&n)!=EOF){
int fz[100000],ans[100000]={1,1};
n+=1;
while(n-->1){
for(int i=1;i<=ans[0];i++){
ans[i]=ans[i]*n+fz[i];fz[i]=0;
if(ans[i]>9){
fz[i+1]+=ans[i]/10;
ans[i]%=10;
if(i==ans[0]) ++ans[0];
}
}
}
for(int i=ans[0];i>0;i--) printf("%d",ans[i]);
printf("\n");
}
return 0;
}
int main(){
int n;
while(scanf("%d",&n)!=EOF){
int fz[100000],ans[100000]={1,1};
n+=1;
while(n-->1){
for(int i=1;i<=ans[0];i++){
ans[i]=ans[i]*n+fz[i];fz[i]=0;
if(ans[i]>9){
fz[i+1]+=ans[i]/10;
ans[i]%=10;
if(i==ans[0]) ++ans[0];
}
}
}
for(int i=ans[0];i>0;i--) printf("%d",ans[i]);
printf("\n");
}
return 0;
}