hdu 5980 Find Small A（水，模拟）

Find Small A

Time Limit: 2000/1000 MS (Java/Others)    Memory Limit: 65536/65536 K (Java/Others)
Total Submission(s): 1112    Accepted Submission(s): 540

Problem Description

As is known to all,the ASCII of character 'a' is 97. Now,find out how many character 'a' in a group of given numbers. Please note that the numbers here are given by 32 bits’ integers in the computer.That means,1digit represents 4 characters(one character is represented by 8 bits’ binary digits).

 

Input

The input contains a set of test data.The first number is one positive integer N (1≤N≤100),and then N positive integersai (1≤ ai≤2^32 - 1) follow

 

Output

Output one line,including an integer representing the number of 'a' in the group of given numbers.

 

Sample Input

3 97 24929 100

 

Sample Output

3

 

Source

2016ACM/ICPC亚洲区大连站-重现赛（感谢大连海事大学）

 

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#include <bits/stdc++.h>
using namespace std;

int main()
{
    int n;
    int t;
    unsigned int a;
    int i;
    int sum;

    while (~scanf("%d", &n)) {
        sum = 0;
        for (i = 0; i < n; ++i) {
            scanf("%d", &t);
            a = t;
            sum = sum + (((a & 0x000000ff) == 97) ? 1 : 0);
            a >>= 8;
            sum = sum + (((a & 0x000000ff) == 97) ? 1 : 0);
            a >>= 8;
            sum = sum + (((a & 0x000000ff) == 97) ? 1 : 0);
            a >>= 8;
            sum = sum + (((a & 0x000000ff) == 97) ? 1 : 0);
        }
        printf("%d
", sum);
    }

    return 0;
}