# Python: Check the sum of three elements from three arrays is equal to a target value

## Python Basic - 1: Exercise-11 with Solution

Write a Python program to check the sum of three elements (each from an array) from three arrays is equal to a target value. Print all those three-element combinations.

Sample data:

/*

X = [10, 20, 20, 20]

Y = [10, 20, 30, 40]

Z = [10, 30, 40, 20]

target = 70

*/

**Sample Solution**:

**Python Code:**

```
import itertools
from functools import partial
X = [10, 20, 20, 20]
Y = [10, 20, 30, 40]
Z = [10, 30, 40, 20]
T = 70
def check_sum_array(N, *nums):
if sum(x for x in nums) == N:
return (True, nums)
else:
return (False, nums)
pro = itertools.product(X,Y,Z)
func = partial(check_sum_array, T)
sums = list(itertools.starmap(func, pro))
result = set()
for s in sums:
if s[0] == True and s[1] not in result:
result.add(s[1])
print(result)
```

Sample Output:

{(10, 20, 40)} {(10, 20, 40), (10, 30, 30)} {(10, 20, 40), (10, 30, 30), (10, 40, 20)} {(10, 20, 40), (10, 30, 30), (20, 10, 40), (10, 40, 20)} {(10, 20, 40), (20, 20, 30), (10, 30, 30), (20, 10, 40), (10, 40, 20)} {(10, 20, 40), (10, 40, 20), (20, 10, 40), (10, 30, 30), (20, 20, 30), (20, 30, 20)} {(10, 20, 40), (10, 40, 20), (20, 10, 40), (20, 40, 10), (10, 30, 30), (20, 20, 30), (20, 30, 20)}

**Flowchart:**

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