import math
mapval = {
"add": -1,
"sub": -2,
"mul": -3,
"rem": -4,
"pow": -5,
"zero": 0,
"one": 1,
"two": 2,
"three": 3,
"four": 4,
"five": 5,
"six": 6,
"seven": 7,
"eight": 8,
"nine": 9
}
def values():
global mapval
mapval = {
"add": -1,
"sub": -2,
"mul": -3,
"rem": -4,
"pow": -5,
"zero": 0,
"one": 1,
"two": 2,
"three": 3,
"four": 4,
"five": 5,
"six": 6,
"seven": 7,
"eight": 8,
"nine": 9
}
def generate_value(s, stack):
s += 'c'
str_val = ""
sn = ""
for char in s:
if char == 'c':
if str_val not in mapval:
return False
sn += str(mapval[str_val])
str_val = ""
else:
str_val += char
ans = int(sn)
stack.append(ans)
return True
def solve_this(stack1, stack2):
while stack1:
top = stack1.pop()
if top < 0 and len(stack2) < 2:
return "expression is not complete or invalid"
elif top < 0:
val1 = stack2.pop()
val2 = stack2.pop()
if top == -1:
new_val = val1 + val2
elif top == -4:
new_val = val1 % val2
elif top == -2:
new_val = val1 - val2
elif top == -3:
new_val = val1 * val2
elif top == -5:
new_val = int(math.pow(val1, val2))
stack2.append(new_val)
else:
stack2.append(top)
return str(stack2[0]) if len(stack2) == 1 else "expression is not complete or invalid"
def perform_task(s, stack):
i = 0
str_val = ""
s += " "
count_of_c = 0
while i < len(s):
if s[i] == ' ':
if str_val not in mapval:
if count_of_c == 0:
return "expression evaluation stopped invalid words present"
if not generate_value(str_val, stack):
return "expression evaluation stopped invalid words present"
count_of_c = 0
else:
stack.append(mapval[str_val])
str_val = ""
else:
if s[i] == 'c':
count_of_c += 1
str_val += s[i]
i += 1
return ""
def solve_it(s):
st = []
st1 = []
an = perform_task(s, st)
if an != "":
return an
return solve_this(st, st1)
def main():
values()
s = input()
print(solve_it(s))
if name == "main":
main()
No Sybmol one code
https://t.me/code_sagar
