func_code_string: #include <bits/stdc++.h>   using namespace std;   int main() {     int n;     cin >> n;     int ex[n], e[n];     int temp = n;     int i = 0;     while (temp--) {       cin >> ex[i] >> e[i];       i++;     }     int sum = e[0], m = e[0];     for (int j = 1; j < n; j++) {       sum = sum - ex[j] + e[j];       if (sum > m) {         m = sum;       }     }     cout << m << endl;     return 0;   }   