第21841题 单选题
下列C++程序的输出结果是?
#include <iostream>
using namespace std;

int main() {
    const int N = 30;
    int cnt = 0;
    for (int a = 1; a <= N; a++)
        for (int b = a; a + b <= N; b++)
            for (int c = b; a + b + c <= N; c++)
                if (a * a + b * b == c * c)
                    cnt++;
    cout << cnt << endl;
    return 0;
}
A

3

B

6

C

11

D

22

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