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  1. #include <bits/stdc++.h>
  2. using namespace std;
  3. typedef long long int ll;
  4.  
  5. int main() {
  6.     // Optimize standard I/O operations for speed
  7.     ios_base::sync_with_stdio(false);
  8.     cin.tie(NULL);
  9.  
  10.     ll t;
  11.     cin >> t;
  12.     while (t--) {
  13.         ll m, n;
  14.         cin >> m >> n;
  15.  
  16.         vector<int> b(n + 1);
  17.         ll total_1 = 0, total_2 = 0;
  18.         ll r1 = 0, r5 = 0;
  19.  
  20.         // Pass 1: Read array and calculate initial sums for index 1
  21.         for (ll i = 1; i <= n; i++) {
  22.             cin >> b[i];
  23.             if (b[i] == 1 || b[i] == 3) {
  24.                 total_1++;
  25.                 r1 += (i - 1); // Distance from index 1
  26.             }
  27.             if (b[i] == 2 || b[i] == 3) {
  28.                 total_2++;
  29.                 r5 += (i - 1); // Distance from index 1
  30.             }
  31.         }
  32.  
  33.         ll left_1 = 0, left_2 = 0;
  34.  
  35.         // Pass 2: Calculate for each index i by shifting the reference point
  36.         for (ll i = 1; i <= n; i++) {
  37.             cout << abs(r1 - r5) << " ";
  38.  
  39.             // Update the count of elements seen so far (<= i)
  40.             if (b[i] == 1 || b[i] == 3) left_1++;
  41.             if (b[i] == 2 || b[i] == 3) left_2++;
  42.  
  43.             // Shifting index from i to i+1:
  44.             // Elements on the left increase distance by 1, elements on the right decrease by 1
  45.             r1 += 2 * left_1 - total_1; 
  46.             r5 += 2 * left_2 - total_2;
  47.         }
  48.         cout << "\n";
  49.     }
  50.  
  51.     return 0;
  52. }
Success #stdin #stdout 0s 5284KB
comments (?)
stdin
copy 
2
1 5
2 1 3 0 1
1 8
1 1 3 0 2 0 3 3
stdout
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5 2 1 0 1 
3 2 1 4 7 8 9 10
https://ideone.com/nOAK2W
language:
C++ (gcc 8.3)
created:
3 hours ago
visibility:
public

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