#include<stdio.h>
#include<string.h>
int main(){
char str[35];
scanf("%s",str);
int n=strlen(str);
int sum=0;int k=1;
for(int i=n-1;i>=0;i--){
sum+=(str[i]-'0')*k;
k*=8;
}
printf("%d\n",sum);
return 0;
}
#include<stdio.h>
#include<string.h>
int main(){
char str[35];
scanf("%s",str);
int n=strlen(str);
int sum=0;int k=1;
for(int i=n-1;i>=0;i--){
sum+=(str[i]-'0')*k;
k*=8;
}
printf("%d\n",sum);
return 0;
}
#include<iostream> using namespace std; int main(){ int n,m; while(cin>>n>>m){ int arr[100]={2};