func_code_string: #include <bits/stdc++.h>   using namespace std;   const int maxx = 1000 + 50;   long long DP[maxx];   int main() {     int n, m;     cin >> n >> m;     int t = abs(n - m);     DP[1] = 1;     DP[2] = 3;     for (int i = 3; i <= 1000; i++) DP[i] = DP[i - 1] + i;     int ans = 0;     ans = 2 * DP[(t / 2)];     if (t % 2 == 1) ans += (t / 2) + 1;     cout << ans;   }   