Python time.perf_counter_ns() Function

# import  perf_counter_ns()
from time import perf_counter_ns
# integer input from user, 2 input in single line
n, m = map(int, input().split())
# Start the stopwatch / counter
start = perf_counter_ns()
for i in range(n):
    t = int(input())  # user gave input n times
    if t % m == 0:
        print(t)
# Stop the stopwatch / counter
stop = perf_counter_ns()
print("Elapsed time:", stop, 'ns', start, 'ns')
print("Elapsed time during the whole program",
      stop-start, 'ns')

# import  perf_counter_ns()
from time import perf_counter_ns
# integer input from user, 2 input in single line
n, m = map(int, input().split())
# Start the stopwatch / counter
start = perf_counter_ns()
for i in range(n):
    t = int(input())  # user gave input n times
    if t % m == 0:
        print(t)
# Stop the stopwatch / counter
stop = perf_counter_ns()
print("Elapsed time:", stop, 'ns', start, 'ns')
print("Elapsed time during the whole program",
      stop-start, 'ns')