PAT A 甲級 1065 A+B and C (64bit) (20分)

1065 A+B and C (64bit) (20分)

思路

這道題的難點并不隻是相加可能導緻資料資料溢出。更重要的是，提供的輸入範圍裡，263根本就不在long long的範圍内。long long的範圍是到263-1。

也就是說，從儲存輸入這一步開始，就已經隻能用string類型了。

但是和C++不同，python3的int是無上限的（微笑）。

當然啦，C++也是可以做這道題的，隻不過大概得用string寫個循環來計算就是了。

代碼

times=int(input())
lst=[]
for i in range(times):
    lst.append(list(map(int,input().split())))
    print('Case #%d: '%(i+1),end='')
    if lst[i][0]+lst[i][1]>lst[i][2]:
        print('true')
    else: 
        print('false')
           

題目

Given three integers A, B and C in [−2​63,263], you are supposed to tell whether A+B>C.

Input Specification:

The first line of the input gives the positive number of test cases, T (≤10). Then T test cases follow, each consists of a single line containing three integers A, B and C, separated by single spaces.

Output Specification:

For each test case, output in one line Case #X: true if A+B>C, or Case #X: false otherwise, where X is the case number (starting from 1).

Sample Input:

3

1 2 3

2 3 4

9223372036854775807 -9223372036854775808 0

Sample Output:

Case #1: false

Case #2: true

Case #3: false