Try these tests on big input data:
1000000000000000000 999999999999999990 999999999999999999
3

1000000000000000000 10 500000000000000000
3

1000000000000000000 500000000000000000 250000000000000000
2

Tips:
1. Remember, that you should not only forget about using big types (for c++ it's long long int or __int64) but not forget to take big input data correctly.
For example, if you will use scanf("%d", &i), it will not get correctly a big input digit.
2. If you use min function in you program to find the minimum of two digits, don't forget to initialize your min value variable with the maximum value your can input.
For example, __int64 minInit = LLONG_MAX.

If you have such problems, you will have incorrect answers on the second and third tests (you'll get 4 and 3 respectively) and you will have WA on the tests 17 (the first tip) and 18 (the second tip).

Hi KOTnt, you helped a lot thank you ...!!!