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  1. #include <bits/stdc++.h>
  2. using namespace std;
  3. #define int              long long int
  4. #define double           long double
  5. #define print(a)         for(auto x : a) cout << x << " "; cout << endl
  6. inline int power(int a, int b) {
  7.     int x = 1;
  8.     while (b) {
  9.         if (b & 1) x *= a;
  10.         a *= a;
  11.         b >>= 1;
  12.     }
  13.     return x;
  14. }
  15.  
  16.  
  17. const int M = 1000000007;
  18. const int N = 3e5+9;
  19. const int INF = 2e9+1;
  20. const int LINF = 2000000000000000001;
  21.  
  22. //_ ***************************** START Below *******************************
  23.  
  24. vector<int> a;
  25.  
  26. int consistency(int n, int k) {
  27.  
  28. 	vector<int> f(32, 0);
  29. 	int oor = 0;
  30. 	int ans = n+1;	
  31. 	int s = 0, e = 0;
  32. 	while(e<n){
  33. 	    for(int i=0; i<32; i++){
  34. 	        if(a[e]&(1<<i)) f[i]++;
  35. 	    }
  36. 	    oor |= a[e];	
  37. 	    if(oor < k){
  38. 	        e++;
  39. 	    }
  40. 	    else{
  41. 	        while(s<=e && oor >= k){
  42. 	            ans = min(ans, e-s+1);	
  43. 	            int newOr = 0;
  44. 	            for(int i=0; i<32; i++){
  45. 	                if(a[s]&(1<<i)) f[i]--;
  46. 	                if(f[i] > 0) newOr = (newOr | (1<<i));
  47. 	            }
  48. 	            oor = newOr;
  49. 	            s++;
  50. 	        }
  51. 	        e++;
  52. 	    }
  53. 	}	
  54.  
  55. 	if(ans == n+1) return -1;
  56.  
  57. 	return ans;
  58. }
  59.  
  60.  
  61.  
  62.  
  63.  
  64.  
  65.  
  66.  
  67.  
  68. int practice(int n, int k) {
  69.  
  70.  
  71. 	return 0;
  72. }
  73.  
  74.  
  75. void solve() {
  76.  
  77.     int n, k;
  78.     cin>>n >> k;
  79.  
  80. 	a.resize(n);
  81.     for(int i=0; i<n; i++) cin >> a[i];
  82.  
  83. 	cout << consistency(n, k) << endl;
  84. 	// cout << consistency(n, k) << " -> " << practice(n, k) << endl;
  85.  
  86.  
  87. }
  88.  
  89.  
  90.  
  91.  
  92.  
  93. int32_t main() {
  94.     ios_base::sync_with_stdio(0); cin.tie(0); cout.tie(0);
  95.  
  96.     int t = 1;
  97.     // cin >> t;
  98.     while (t--) {
  99.         solve();
  100.     }
  101.  
  102.     return 0;
  103. }
Success #stdin #stdout 0.01s 5280KB
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https://ideone.com/AbHXW8
language:
C++14 (gcc 8.3)
created:
2 days ago
visibility:
public

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