Submission #428638

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
428638	2021-06-15 13:22:05	shenxy	Cheerleaders (info1cup20_cheerleaders)	C++11	100 / 100	1511 ms	141148 KiB

cheerleaders

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#include <cstdio>
#include <algorithm>
#include <vector>
using namespace std;
long long inv[17], niv[17];
struct seg {
  int s, v;
  seg *l, *r;
  seg(int _s) {
    s = _s, v = 0;
    if (s) {
      l = new seg(s - 1);
      r = new seg(s - 1);
    }
  }
  void update(int i) {
    if (s) {
      if (i < (1 << (s - 1))) l -> update(i), inv[s - 1] += r -> v;
      else r -> update(i - (1 << (s - 1))), niv[s - 1] += l -> v;
      v = l -> v + r -> v;
    } else ++v;
  }
} *root;
int main() {
  int N, h;
  scanf("%d", &N);
  if (N == 0) {
    printf("0\n11");
    return 0;
  }
 
 
הההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההה
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Compilation message (stderr)

cheerleaders.cpp: In function 'int main()':
cheerleaders.cpp:26:7: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   26 |  scanf("%d", &N);
      |  ~~~~~^~~~~~~~~~
cheerleaders.cpp:35:42: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   35 |  for (int i = 0; i < (1 << N); ++i) scanf("%d", &h), a[h] = i;
      |                                     ~~~~~^~~~~~~~~~

• Subtask 1: 16 / 16
• Subtask 2: 10 / 10
• Subtask 3: 25 / 25
• Subtask 4: 21 / 21
• Subtask 5: 28 / 28