#輸入+陣列化
w = list(map(str, input().split()))
for i in range(0, len(w) - 2):
if i % 2 == 0:#數字+運算
w[i] = int(w[i])
w[i + 2] = int(w[i + 2])
if w[i + 1] == "+":
ans = w[i] + w[i + 2]
elif w[i + 1] == "-":
ans = w[i] - w[i + 2]
elif w[i + 1] == "*":
ans = w[i] * w[i + 2]
else:
ans = int(w[i] / w[i + 2])
print(ans)#輸出