func_code_string: #include <bits/stdc++.h>   using namespace std;   int main() {     ios_base::sync_with_stdio(false);     cin.tie(NULL);     int n;     cin >> n;     vector<int> a(n), b(n);     for (int i = 0; i < n; ++i) cin >> a[i] >> b[i];     int maxCap = b[0], curCap = b[0];     for (int i = 1; i < n; ++i) {       curCap = curCap - a[i] + b[i];       maxCap = max(maxCap, curCap);     }     cout << maxCap <<   n ;     return 0;   }   