7.18 热身赛 A+B Problem

A+B Problem

Time Limit: 2000/1000 MS (Java/Others) Memory Limit: 65536/65536 K (Java/Others)Total Submission(s): 83 Accepted Submission(s): 62

Problem Description

HZ has a special calculator, in which all the integers are 11-bit signed integers. The range of an 11-bit signed integer is from −210 to 210−1 (from −1024 to 1023). When using this calculator to calculate the sum of two integers A and B, the result may be different from other calculators. Here are some examples:

1 + 1 = 2

1023 + 1 = −1024

1023 + 2 = −1023

−1024 + (−1) = 1023

−1024 + (−2) = 1022

HZ found this special calculator very strange, so he comes to you. You are given two integers A and B, and you need to guess the result of A+B of this calculator.

Input

The first line of input contains an integer T (1≤T≤105), denoting the number of test cases.

Each test case contains two integers A and B in one line. −1024≤A,B≤1023.

Output

For each test case, print one integer in one line, denoting your answer.

Sample Input

5
1 1
1023 1
1023 2
-1024 -1
-1024 -2

Sample Output

2
-1024
-1023
1023
1022

大概题意

找个规律就行

思路

直接用if，else，简单粗暴

代码

#include <iostream>

using namespace std;

int a, b, t;

int main() {
    cin >> t;
    while (t--) {
        cin >> a >> b;
        int res = a + b;
        if (res > 1023) {
            res = -1024 + (res - 1024);
        } else if (res < -1024) {
            res = 1023 + (res + 1025);
        }
        cout << res << endl;
    }
    return 0;
}