PROGRAMMING:Sum of squares

The function of the program is to input a long integer and find the sum of squares s of each digit. If the input is negative, find the sum of squares of the opposite numbers. For example: input - 123, output 14.
###Input format:
Enter a long integer directly.
###Output format:
Output according to the format of "sum = s", where the sum of squares s of each digit is output as is without width control.
###Input example:
```in
twenty-four
```
###Output example:
```out
sum=20
```
###Input example:
```
-12
```
###Output example:
```
sum=5
```






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