Wrong Anser: BUT I checked with the test data on this
site....correct....

take a look at my code please.
thanks. is there any test case that does not work??

// USU Problem 1165
// Subnumber
// Done by Teh Ming Han

#include <string.h>
#include <iostream.h>
#include <stdlib.h>

int main(){
    int i,a,pos,mat=-1,ori=-1,n=0;
    char dat[201]={'\0'};
    cin.getline(dat,200,'\n');

    pos=0;
    int length = strlen(dat);
    for (i=1;true;i++){
        char ne[8]={'\0'};
        itoa(i,ne,10);
        for (a=0;a<strlen(ne);a++){
            n++;
            if (ne[a]==dat[pos]){
                if (pos==0) ori = n;
                pos++;
            }else pos=0;
            if (pos==length){
                mat = ori;
                break;
            }
        }
        if (mat!=-1) break;
    }
    cout<<mat;
    return 0;
}

> Wrong Anser: BUT I checked with the test data on this
> site....correct....
>
> take a look at my code please.
> thanks. is there any test case that does not work??
>

here!
9100
your output is 2889
99100
your output is 188
91001
your output is 38939


> // USU Problem 1165
> // Subnumber
> // Done by Teh Ming Han
>
> #include <string.h>
> #include <iostream.h>
> #include <stdlib.h>
>
> int main(){
>     int i,a,pos,mat=-1,ori=-1,n=0;
>     char dat[201]={'\0'};
>     cin.getline(dat,200,'\n');
>
>     pos=0;
>     int length = strlen(dat);
>     for (i=1;true;i++){
>         char ne[8]={'\0'};
>         itoa(i,ne,10);
>         for (a=0;a<strlen(ne);a++){
>             n++;
>             if (ne[a]==dat[pos]){
>                 if (pos==0) ori = n;
>                 pos++;
>             }else pos=0;
>             if (pos==length){
>                 mat = ori;
>                 break;
>             }
>         }
>         if (mat!=-1) break;
>     }
>     cout<<mat;
>     return 0;
> }