20 lines
384 B
Python
20 lines
384 B
Python
|
import sys
|
||
|
|
|
||
|
|
L = sys.stdin.read().splitlines()
|
||
|
|
S = 0
|
||
|
|
for report in L:
|
||
|
|
l = [int(r) for r in report.split(' ')]
|
||
|
|
m = list(l)
|
||
|
|
latest=[]
|
||
|
|
latest.append(m[-1])
|
||
|
|
|
||
|
|
while not all(v == 0 for v in l):
|
||
|
|
m = []
|
||
|
|
for i in range(0,len(l)-1):
|
||
|
|
m.append(l[i+1] - l[i])
|
||
|
|
|
||
|
|
latest.append(m[-1])
|
||
|
|
l = list(m)
|
||
|
|
S+=sum(latest)
|
||
|
|
|
||
|
|
print(S)
|