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MathQ_

Untitled

Jan 10th, 2021
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C++ 0.40 KB | None | 0 0
  1.     int get_k(int id, int l, int r, int k) {
  2.         if (l + 1 == r) {
  3.             return l;
  4.         }
  5.         int m = (l + r) / 2;
  6.         if (k <= sums[id * 2 + 1]) {
  7.             return get_k(id * 2 + 1, l, m, k);
  8.         } else if (k - sums[id * 2 + 1] <= sums[id * 2 + 2]) {
  9.             return get_k(id * 2 + 2, m, r, k - sums[id * 2 + 1]);
  10.         } else {
  11.             return -1;
  12.         }
  13.     }
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