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  1. #include <bits/stdc++.h>
  2. using namespace std;
  3.  
  4. int main() {
  5.     ios::sync_with_stdio(false);
  6.     cin.tie(nullptr);
  7.  
  8.     int n, m;
  9.     cin >> n >> m;
  10.  
  11.     vector<int> a(n+1), b(m+1);
  12.     for (int i = 1; i <= n; i++) cin >> a[i];
  13.     for (int i = 1; i <= m; i++) cin >> b[i];
  14.  
  15.     long long countZero = 0;
  16.  
  17.     auto process = [&](int i, int j) {
  18.         long long sum = 0;
  19.         while (i <= n && j <= m) {
  20.             if (a[i] != b[j]) break;
  21.             sum += a[i];
  22.             if (sum == 0) countZero++;
  23.             i++; j++;
  24.         }
  25.     };
  26.  
  27.     // Các đường chéo xuất phát từ a[1..n] với b[1]
  28.     for (int i = 1; i <= n; i++)
  29.         process(i, 1);
  30.  
  31.     // Các đường chéo xuất phát từ a[1] với b[2..m]
  32.     for (int j = 2; j <= m; j++)
  33.         process(1, j);
  34.  
  35.     cout << countZero;
  36.     return 0;
  37. }
  38.  
Runtime error #stdin #stdout 1.13s 2095992KB
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Standard input is empty
stdout
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Standard output is empty
https://ideone.com/YwEoB0
language:
C++ (gcc 8.3)
created:
253 days ago
visibility:
secret

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