CCF 202012-1期末预测之安全指数
n = int(input())
l = []
L = []
for i in range(n):
l = [int(x) for x in input().split()] # 列表生成器
L.append(l)
sum = 0
for i in range(n):
sum += L[i][0] * L[i][1]
result = max(sum, 0)
print(result)
n = int(input())
l = []
L = []
for i in range(n):
l = [int(x) for x in input().split()] # 列表生成器
L.append(l)
sum = 0
for i in range(n):
sum += L[i][0] * L[i][1]
result = max(sum, 0)
print(result)