#include<stdio.h>
#include<string.h>
int main(){
    char binary[33];
    scanf("%s",binary);
     int len=strlen(binary);
     for(int=0;i<len;i++){
         if(binary)[i]!='o'&&binary[i]!='1'){
             printf("Invalid Input");
             return 0;
         }
     }
     if(binary[0]=='0'){
         int decimal=0;
         for(int i=pte
     }
}