Bình luận

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  nhantrong  đã bình luận lúc 23, Tháng 1, 2024, 7:50

  include <iostream>

  include <vector>

  using namespace std;

  int findDaysToZeroF0(int k, int n, vector<int>& infected, vector<int>& recovered) { int totalInfected = k; int totalRecovered = 0;

  for (int day = 0; day < n; ++day) {
      totalInfected += infected[day];
      totalRecovered += recovered[day];
  
      if (totalInfected <= totalRecovered) {
          return day + 1;
      }
  }
  
  return -1;
  

  }

  int main() { int k, n; cin >> k >> n;

  vector<int> infected(n);
  vector<int> recovered(n);
  
  for (int i = 0; i < n; ++i) {
      cin >> infected[i];
  }
  
  for (int i = 0; i < n; ++i) {
      cin >> recovered[i];
  }
  
  int result = findDaysToZeroF0(k, n, infected, recovered);
  
  cout << result << endl;
  
  return 0;
  

  }