Submission #598345

#	Time	Username	Problem	Language	Result	Execution time	Memory
598345		Koosha_mv	Arranging Tickets (JOI17_arranging_tickets)	C++14	0 / 100	1 ms	340 KiB

arranging_tickets

#include <bits/stdc++.h>
using namespace std;
#define dbgv(v) cout<<#v<<" = "; f(i,0,v.size()) cout<<v[i]<<" "; cout<<endl
#define dbga(a,x,y) cout<<#a<<" = "; f(i,x,y) cout<<a[i]<<" "; cout<<endl
#define erorp(x) cout<<#x<<"={"<<(x.F)<<" , "<<x.S<<"}"<<endl
#define eror(x) cout<<#x<<'='<<(x)<<endl
#define f_(i,a,b) for(int i=a;i>=b;i--)
#define f(i,a,b) for(int i=a;i<b;i++)
#define nb(x) __builtin_popcount(x)
#define all(v) v.begin(),v.end()
#define bit(n,k) (((n)>>(k))&1)
#define Add(x,y) x=(x+y)%mod
#define maxm(a,b) a=max(a,b)
#define minm(a,b) a=min(a,b)
#define lst(x) x[x.size()-1]
#define sz(x) int(x.size())
#define mp make_pair
#define ll long long
#define pb push_back
#define S second
#define F first
 
const int N=3030;
 
int n,m,ans,cnt,a[N],b[N],s[N],t[N],ok[N];
vector<int> v[N];
 
void solve(int x){
	int sum=0,cnt=0;
	set<pair<int,int> > s;
	f(i,0,n) b[i]=0;
	f(i,0,n){
		sum+=a[i]+b[i];
		f(j,0,v[i].size()){
			s.insert(mp(v[i][j],cnt++));
		}
		while(sum<x){
			if(s.size()==0) return ;
			int x=(*s.rbegin()).F;
			s.erase(*s.rbegin());
			b[x]-=2;
			sum+=2;
		}
	}	
	cout<<x<<" -> "<<sz(s)<<endl;
	maxm(ans,x+sz(s));
}
void do_it(){
	pair<int,int> mn=mp(N,0);
	f(i,0,m){
		if(ok[i]) continue ;
		int mx=-N;
		f(j,s[i],t[i]) maxm(mx,a[j]);
		minm(mn,mp(mx,i));
	}
	int id=mn.S;
	ok[id]=1;
	f(i,s[id],t[id]) a[i]+=2;
	cnt--;
}
int calc(){
	int mx=-m;
	f(i,0,n) maxm(mx,a[i]);
	return mx+cnt;	
}
int main(){
	ios_base::sync_with_stdio(false); cin.tie(0); cout.tie(0);
	cin>>n>>m; ans=cnt=m;
	f(i,0,m){
		int c;
		cin>>s[i]>>t[i]>>c;
		if(s[i]>t[i]) swap(s[i],t[i]);
		s[i]--;
		t[i]--;
		a[s[i]]--;
		a[t[i]]++;
		v[s[i]].pb(t[i]);
	}
	f(i,0,n) a[i+1]+=a[i];
	f(i,0,m){
		minm(ans,calc());
		//eror(calc());
		do_it();
	}
	minm(ans,calc());
	cout<<ans;
}

• Subtask 1: 0 / 10
• Subtask 2: 0 / 35
• Subtask 3: 0 / 20
• Subtask 4: 0 / 20
• Subtask 5: 0 / 15