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