Submission #535945

#	Time	Username	Problem	Language	Result	Execution time	Memory
535945		inksamurai	Osumnjičeni (COCI21_osumnjiceni)	C++17	0 / 110	208 ms	5112 KiB

Main

#include <bits/stdc++.h>
using namespace std;
#define rep(i,n) for(int i=0;i<n;i++)
#define rng(i,x,n) for(int i=x;i<n;i++)
#define per(i,n) for(int i=n-1;i>=0;i--)
#define fi first
#define se second
#define pb push_back
#define sz(a) (int)a.size()
#define vec(...) vector<__VA_ARGS__>
#define _3HspL4A ios::sync_with_stdio(0),cin.tie(0)
typedef long long ll;
using pii=pair<int,int>;
using vi=vec(int);
void print(){cout<<"\n";}
template<class T,class...E>
void print(const T&v,const E&...u){cout<<v<<' ',print(u...);}
// e

using vp=vec(pii);

signed main(){
_3HspL4A;
	int n;
	cin>>n;
	vp a(n);
	rep(i,n){
		cin>>a[i].fi>>a[i].se;
	}
	vi tmp;
	rep(i,n){
		tmp.pb(a[i].fi);
		tmp.pb(a[i].se);
	}
	sort(tmp.begin(),tmp.end());
	tmp.erase(unique(tmp.begin(),tmp.end()));
	rep(i,n){
		a[i].fi=lower_bound(tmp.begin(),tmp.end(),a[i].fi)-tmp.begin();
		a[i].se=lower_bound(tmp.begin(),tmp.end(),a[i].se)-tmp.begin();
	}
	int q;
	cin>>q;
	rep(_,q){
		int s,t;
		cin>>s>>t;
		s-=1;
		vi cnt(2*n);
		rng(j,s,t){
			cnt[a[j].fi]+=1;
			cnt[a[j].se+1]-=1;
		}
		int now=0,ans=0;
		rep(j,2*n){
			if(j) cnt[j]+=cnt[j-1];
			ans=max(ans,cnt[j]);
		}
		// print(ans);
		cout<<ans<<"\n";
	}
//	
	return 0;
}

Compilation message (stderr)

Main.cpp: In function 'int main()':
Main.cpp:52:7: warning: unused variable 'now' [-Wunused-variable]
   52 |   int now=0,ans=0;
      |       ^~~

• Subtask 1: 0 / 10
• Subtask 2: 0 / 10
• Subtask 3: 0 / 20
• Subtask 4: 0 / 20
• Subtask 5: 0 / 50