Submission #260717

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
260717	2020-08-10 19:09:29	ChrisT	Exercise Deadlines (CCO20_day1problem2)	C++17	25 / 25	253 ms	18292 KiB

Main

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#include<bits/stdc++.h>
using namespace std;
using ll = long long;
using pii = pair<int,int>;
using pli = pair<ll,int>;
using pll = pair<ll,ll>;
using ld = long double;
#define all(x) (x).begin(),(x).end()
const int MN = 2e5 + 5, MOD = 1e9 + 7, BASE = 131;
int bit[MN],n; set<int> in;
void inc (int i) {
  for (;i<MN;i+=i&-i)
    ++bit[i];
}
void dec (int i) {
  for (;i<MN;i+=i&-i)
    --bit[i];
}
int query (int i) {
  int ret = 0;
  for (;i;i^=i&-i)
    ret += bit[i];
  return ret;
}
int bsearch (int ind) {
  int l = 1, r = n, mid, ans = -1;
  while (l <= r) {
    mid = (l+r)/2;
    if (query(mid) <= ind) l = (ans = mid) + 1;
    else r = mid - 1;
 
 
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Compilation message (stderr)

Main.cpp: In function 'int main()':
Main.cpp:35:8: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   35 |  scanf ("%d",&n);
      |  ~~~~~~^~~~~~~~~
Main.cpp:39:37: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   39 |  for (int i = 1; i <= n; i++) scanf ("%d",&d[i]), where[d[i]].push_back(i), inc(i);
      |                               ~~~~~~^~~~~~~~~~~~

• Subtask 1: 17 / 17
• Subtask 2: 8 / 8