func_code_string: #include <bits/stdc++.h>   using namespace std;   int main() {     int n;     cin >> n;     int a, b;     long long c, nr = 0;     for (a = 1; a <= n; ++a) {       for (b = a; b <= n; ++b) {         c = sqrt(a * a + b * b);         if (c * c == a * a + b * b && c >= b && c <= n) ++nr;       }     }     cout << nr;     return 0;   }   