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  1. #include <bits/stdc++.h>
  2. #define lb lower_bound
  3. #define pii pair<ll,ll>
  4. #define fi first
  5.  
  6. #define ll long long
  7. #define se second
  8. #define ios ios_base::sync_with_stdio(false); cin.tie(NULL); cout.tie(NULL);
  9. #define op freopen
  10. #define sz size
  11. #define TXT "test"
  12. #define freo if(fopen(TXT".inp","r")){op(TXT".inp","r",stdin);op(TXT".out","w",stdout);}
  13.  
  14. using namespace std;
  15.  
  16. ll n, m, k, a[100005], b[100005];
  17. ll rmq[100005][18], lg[100005];
  18.  
  19. void setup()
  20. {
  21.     lg[1] = 0;
  22.     for (ll i = 2; i <= n; ++i)
  23.     {
  24.         lg[i] = lg[i / 2] + 1;
  25.     }
  26.     for (ll i = 1; i <= n; ++i)
  27.     {
  28.         rmq[i][0] = a[i];
  29.     }
  30.     for (ll j = 1; (1 << j) <= n; ++j)
  31.     {
  32.         for (ll i = 1; i + (1 << j) - 1 <= n; ++i)
  33.         {
  34.             rmq[i][j] = min(rmq[i][j - 1], rmq[i + (1 << (j - 1))][j - 1]);
  35.         }
  36.     }
  37. }
  38.  
  39. ll query(ll l, ll r)
  40. {
  41.     ll j = lg[r - l + 1];
  42.     return min(rmq[l][j], rmq[r - (1 << j) + 1][j]);
  43. }
  44. main()
  45. {
  46.     ios;
  47.     freo;
  48.     cin >> n >> m >> k;
  49.     for (ll i = 1; i <= n; ++i)
  50.         cin >> a[i];
  51.     for (ll i = 1; i <= m; ++i)
  52.         cin >> b[i];
  53.     sort(b + 1, b + 1 + m);
  54.     for (ll i = 1; i <= n; ++i)
  55.     {
  56.         ll id = lb(b + 1, b + 1 + m, a[i])-b;
  57.         ll c=INT_MAX;
  58.         if(id<m)
  59.             c=min(c,abs(a[i]-b[id]));
  60.         if(id>0)
  61.             c=min(c,abs(a[i]-b[id-1]));
  62.         a[i]=c;
  63.  
  64.     }
  65.     setup();
  66.     while (k--)
  67.     {
  68.         ll l, r;
  69.         cin >> l >> r;
  70.         cout << query(l, r) << "\n";
  71.     }
  72. }
  73.  
Success #stdin #stdout 0s 5316KB
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https://ideone.com/qvfcB6
language:
C++ (gcc 8.3)
created:
14 days ago
visibility:
public

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