下面程序的输出为( )。
#include <iostream>using namespace std; int main() { int cnt = 0; for (int a = 1; a <= 10; a++) for (int b = 1; b <= 10; b++) for (int h = 1; h <= 10; h++) if ((a + b) * h == 20) cnt++; cout << cnt << endl; return 0;}