Relic Discovery

NC18999. Relic Discovery

描述

Recently, paleoanthropologists have found historical remains on an island in the Atlantic Ocean. The most inspiring thing is that they excavated in a magniﬁcent cave and found that it was a huge tomb. Inside the construction, researchers identiﬁed a large number of skeletons, and funeral objects including stone axe, livestock bones and murals. Now, all items have been sorted, and they can be divided into N types. After they were checked attentively, you are told that there are A_i items of the i-th type. Further more, each item of the i-th type requires B_i million dollars for transportation, analysis, and preservation averagely. As your job, you need to calculate the total expenditure.

输入描述

The ﬁrst line of input contains an integer T which is the number of test cases. For each test case, the ﬁrst line contains an integer N which is the number of types. In the next N lines, the i-th line contains two numbers A_i and B_i as described above. All numbers are positive integers and less than 101.

输出描述

For each case, output one integer, the total expenditure in million dollars.

示例1

输入:

输出:

原站题解

上次编辑到这里，代码来自缓存点击恢复默认模板

pypy3(pypy3.6.1) 解法, 执行用时: 273ms, 内存消耗: 23120K, 提交时间: 2020-06-03 00:50:22

t=int(input())
while(t>0):
    t-=1
    n=int(input());ans=0
    for i in range(n):
        x,y=map(int, input().split())
        ans+=x*y
    print(ans)

Python3(3.5.2) 解法, 执行用时: 55ms, 内存消耗: 3428K, 提交时间: 2020-06-11 10:18:22

t = int(input())
for i in range(0,t):
	n = int(input())
	sum = 0
	for i in range(0,n):
		a, b = map(int, input().split())
		sum += a*b
	print(sum)

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