Laskettelukeskus

a = [int(x) for x in input().split()]
for i in range(1,a[0]+1):
    c = [int(x) for x in input().split()]
    b.append(c)
for i in range(1,a[0]+1):
    c.append(b[-1])

l=0
lauseke=0
d=0
valmis=False
while len(c)>1:
    while valmis!=True:
        if b[-2-2*l]==b[-4-2*l]:
            l+=1
        else:
            valmis=True
    if l>=1:
        lauseke=c[b[-1]-1]
        d=3
        for i in range(1,l+1):
            lauseke+=c[b[-d]-1]
            d+=2
        if lauseke<=c[b[-2]-1]:
            for i in range(1,4*l+1):
                b.pop()
            for i in range(1,l+2):
                c.pop()
        else:
            for i in range(1,4*l+1):
                b.pop()
            for i in range(1,l+2):
                c.pop()
            c[-1]=lauseke
    else:
        if c[-1]<=c[-2]:
            c.pop()
            b.pop()
            b.pop()
        else:
            c[-2]=c[-1]
            c.pop()
            b.pop()
            b.pop()
        
print(c[0])    

Test 1

Group: 1, 2

Verdict: RUNTIME ERROR

Traceback (most recent call last):
  File "input/code.py", line 4, in <module>
    b.appen...

Test 2

Group: 1, 2

Verdict: RUNTIME ERROR

Traceback (most recent call last):
  File "input/code.py", line 4, in <module>
    b.appen...

Test 3

Group: 1, 2

Verdict: RUNTIME ERROR

Traceback (most recent call last):
  File "input/code.py", line 4, in <module>
    b.appen...

Test 4

Group: 2

Verdict: RUNTIME ERROR

Traceback (most recent call last):
  File "input/code.py", line 4, in <module>
    b.appen...

Test 5

Group: 2

Verdict: RUNTIME ERROR

Traceback (most recent call last):
  File "input/code.py", line 4, in <module>
    b.appen...

Test 6

Group: 1, 2

Verdict: RUNTIME ERROR

Traceback (most recent call last):
  File "input/code.py", line 4, in <module>
    b.appen...

Test 7

Group: 2

Verdict: RUNTIME ERROR

Traceback (most recent call last):
  File "input/code.py", line 4, in <module>
    b.appen...

Test 8

Group: 1, 2

Verdict: RUNTIME ERROR

Traceback (most recent call last):
  File "input/code.py", line 4, in <module>
    b.appen...

Test 9

Group: 2

Verdict: RUNTIME ERROR

Traceback (most recent call last):
  File "input/code.py", line 4, in <module>
    b.appen...

Test 10

Group: 1, 2

Verdict: RUNTIME ERROR

Traceback (most recent call last):
  File "input/code.py", line 4, in <module>
    b.appen...

Test 11

Group: 2

Verdict: RUNTIME ERROR

Traceback (most recent call last):
  File "input/code.py", line 4, in <module>
    b.appen...

Test 12

Group: 1, 2

Verdict: RUNTIME ERROR

Traceback (most recent call last):
  File "input/code.py", line 4, in <module>
    b.appen...

Test 13

Group: 2

Verdict: RUNTIME ERROR

Traceback (most recent call last):
  File "input/code.py", line 4, in <module>
    b.appen...