Submission #600994

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
600994	2022-07-21 09:52:16	CSQ31	Event Hopping (BOI22_events)	C++17	10 / 100	1572 ms	4104 KiB

events

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#include <bits/stdc++.h>
using namespace std;
#define all(a) a.begin(),a.end()
#define owo ios_base::sync_with_stdio(0);cin.tie(0);
const int MAXN = 1e5+1;
int s[MAXN],e[MAXN];
bool check(int x,int j){ //got edge i->j?
  return s[j] <= x && x <= e[j];
}
int main()
{
  owo
  int n,q;
  cin>>n>>q;
  vector<int>crd;
  for(int i=0;i<n;i++)cin>>s[i]>>e[i];
  for(int i=0;i<n;i++){
    crd.push_back(s[i]);
    crd.push_back(e[i]);
  }
  sort(all(crd));
  crd.resize(unique(all(crd)) - crd.begin());
  for(int i=0;i<n;i++){
    s[i] = lower_bound(all(crd),s[i]) - crd.begin();
    e[i] = lower_bound(all(crd),e[i]) - crd.begin();
  }
  int m = crd.size();
  //greedy : always jump to the rightmost guy with e < e[r]
  while(q--){
 
 
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Compilation message (stderr)

events.cpp: In function 'int main()':
events.cpp:27:6: warning: unused variable 'm' [-Wunused-variable]
   27 |  int m = crd.size();
      |      ^

• Subtask 1: 0 / 10
• Subtask 2: 10 / 10
• Subtask 3: 0 / 15
• Subtask 4: 0 / 15
• Subtask 5: 0 / 20
• Subtask 6: 0 / 30