bool isContain(char *a, char *b){
int i = 0;
int j = 0;
int k = 0;
while(a[i] != '\0' && b[j] != '\0'){
k = i+1;
while(b[j] != '\0'){
if(a[i] == b[j]){
i++;
j++;
}else{
i = k;
j = 0;
break;
}
}
}
return (j != 0);
}