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  1. #include <bits/stdc++.h>
  2. using namespace std;
  3.  
  4. void solve() {
  5.     int n, k; cin >> n >> k;
  6.     int a[n], b[n];
  7.     for (int i = 0; i < n; i++) cin >> a[i];
  8.     for (int i = 0; i < n; i++) cin >> b[i];
  9.     int s = -1;
  10.     for (int i = 0; i < n; i++) {
  11.         if (b[i] != -1) {
  12.             if (s == -1) s = a[i] + b[i];
  13.             else {
  14.                 if (s != a[i] + b[i]) {
  15.                     cout << 0 << '\n';
  16.                     return;
  17.                 }
  18.             }
  19.         }
  20.     }
  21.     if (s == -1) {
  22.         sort(a, a+n);
  23.         int mx = a[n-1] - a[0];
  24.         cout << k - mx + 1 << '\n';
  25.         return;
  26.     }
  27.     for (int i = 0; i < n; i++) {
  28.         if (a[i] > s || s - a[i] > k) {
  29.             cout << 0 << '\n';
  30.             return;
  31.         }
  32.     }
  33.     cout << 1 << '\n';
  34. }
  35.  
  36. int main() {
  37.     int t; cin >> t;
  38.     while (t--) solve();
  39.     return 0;
  40. }
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https://ideone.com/ioOntf
language:
C++ (gcc 8.3)
created:
3 hours ago
visibility:
public

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